php regular comment remove - php

how remove multi line comment ? ( /* comment php */) from file .php
how remove single comment ? ( // coment ) from file.php
how remove enter end line ?
sample :
single comment line
$G["url"] = "http://".$_SERVER["HTTP_HOST"]
multi comment line
/*
* 310
* - "::"
* - $col
*/

Try using the code posted below, it even ignores comment tokens on strings like " /* comment2 */ "
<?php
$fileIn = "src.php";
$fileOut = "srcCompressed.php";
$text = file_get_contents($fileIn);
$text = compress_php_src($text);
file_put_contents($fileOut, $text);
function compress_php_src($src) {
// Whitespaces left and right from this signs can be ignored
static $IW = array(
T_CONCAT_EQUAL, // .=
T_DOUBLE_ARROW, // =>
T_BOOLEAN_AND, // &&
T_BOOLEAN_OR, // ||
T_IS_EQUAL, // ==
T_IS_NOT_EQUAL, // != or <>
T_IS_SMALLER_OR_EQUAL, // <=
T_IS_GREATER_OR_EQUAL, // >=
T_INC, // ++
T_DEC, // --
T_PLUS_EQUAL, // +=
T_MINUS_EQUAL, // -=
T_MUL_EQUAL, // *=
T_DIV_EQUAL, // /=
T_IS_IDENTICAL, // ===
T_IS_NOT_IDENTICAL, // !==
T_DOUBLE_COLON, // ::
T_PAAMAYIM_NEKUDOTAYIM, // ::
T_OBJECT_OPERATOR, // ->
T_DOLLAR_OPEN_CURLY_BRACES, // ${
T_AND_EQUAL, // &=
T_MOD_EQUAL, // %=
T_XOR_EQUAL, // ^=
T_OR_EQUAL, // |=
T_SL, // <<
T_SR, // >>
T_SL_EQUAL, // <<=
T_SR_EQUAL, // >>=
);
if(is_file($src)) {
if(!$src = file_get_contents($src)) {
return false;
}
}
$tokens = token_get_all($src);
$new = "";
$c = sizeof($tokens);
$iw = false; // ignore whitespace
$ih = false; // in HEREDOC
$ls = ""; // last sign
$ot = null; // open tag
for($i = 0; $i < $c; $i++) {
$token = $tokens[$i];
if(is_array($token)) {
list($tn, $ts) = $token; // tokens: number, string, line
$tname = token_name($tn);
if($tn == T_INLINE_HTML) {
$new .= $ts;
$iw = false;
} else {
if($tn == T_OPEN_TAG) {
if(strpos($ts, " ") || strpos($ts, "\n") || strpos($ts, "\t") || strpos($ts, "\r")) {
$ts = rtrim($ts);
}
$ts .= " ";
$new .= $ts;
$ot = T_OPEN_TAG;
$iw = true;
} elseif($tn == T_OPEN_TAG_WITH_ECHO) {
$new .= $ts;
$ot = T_OPEN_TAG_WITH_ECHO;
$iw = true;
} elseif($tn == T_CLOSE_TAG) {
if($ot == T_OPEN_TAG_WITH_ECHO) {
$new = rtrim($new, "; ");
} else {
$ts = " ".$ts;
}
$new .= $ts;
$ot = null;
$iw = false;
} elseif(in_array($tn, $IW)) {
$new .= $ts;
$iw = true;
} elseif($tn == T_CONSTANT_ENCAPSED_STRING
|| $tn == T_ENCAPSED_AND_WHITESPACE)
{
if($ts[0] == '"') {
$ts = addcslashes($ts, "\n\t\r");
}
$new .= $ts;
$iw = true;
} elseif($tn == T_WHITESPACE) {
$nt = #$tokens[$i+1];
if(!$iw && (!is_string($nt) || $nt == '$') && !in_array($nt[0], $IW)) {
$new .= " ";
}
$iw = false;
} elseif($tn == T_START_HEREDOC) {
$new .= "<<<S\n";
$iw = false;
$ih = true; // in HEREDOC
} elseif($tn == T_END_HEREDOC) {
$new .= "S;";
$iw = true;
$ih = false; // in HEREDOC
for($j = $i+1; $j < $c; $j++) {
if(is_string($tokens[$j]) && $tokens[$j] == ";") {
$i = $j;
break;
} else if($tokens[$j][0] == T_CLOSE_TAG) {
break;
}
}
} elseif($tn == T_COMMENT || $tn == T_DOC_COMMENT) {
$iw = true;
} else {
if(!$ih) {
$ts = strtolower($ts);
}
$new .= $ts;
$iw = false;
}
}
$ls = "";
} else {
if(($token != ";" && $token != ":") || $ls != $token) {
$new .= $token;
$ls = $token;
}
$iw = true;
}
}
return $new;
}
?>
Credits to gelamu function compress_php_src().

There's no reason to remove comments from your code. The overhead from processing them is so incredibly minimal that it doesn't justify the effort.

I think you are probably looking for php_strip_whitespace().

Related

Is there a way to process PDF files as text files in PHP?

My company receives coupons codes from another company and I need to process them to use them in my company's website. The problem is that they send me a PDF file with the codes, and they say their system can only export them in PDF. Strange.
I've tried several times to let them know that I need those coupons in plain text separated by something (a.k.a CSV) and they doesn't take any notice of that.
My website is written in PHP, and uses MySQL. I would like to offer a way to upload that coupons file and add those to the database. It would be easy considering it is a CSV file but it's not.
Is there any way I can programatically -not manually- process PDF files as text files? or, any workaround for this situation?
I have found pdf2text to have worked well for quite some time.
Will not work with image (TIFF) PDF. will work with text searchable PDF.
include('/home/user/php/class.pdf2text.php');
$p2t = new PDF2Text();
$p2t ->setFilename($pdf);
$p2t ->decodePDF();
$data = $p2t ->output();
$pos = strpos($data,$search);
if (pos){...}
Source:
<?php
class PDF2Text {
// Some settings
var $multibyte = 4; // Use setUnicode(TRUE|FALSE)
var $convertquotes = ENT_QUOTES; // ENT_COMPAT (double-quotes), ENT_QUOTES (Both), ENT_NOQUOTES (None)
var $showprogress = true; // TRUE if you have problems with time-out
// Variables
var $filename = '';
var $decodedtext = '';
function setFilename($filename) {
// Reset
$this->decodedtext = '';
$this->filename = $filename;
}
function output($echo = false) {
if($echo) echo $this->decodedtext;
else return $this->decodedtext;
}
function setUnicode($input) {
// 4 for unicode. But 2 should work in most cases just fine
if($input == true) $this->multibyte = 4;
else $this->multibyte = 2;
}
function decodePDF() {
// Read the data from pdf file
$infile = #file_get_contents($this->filename, FILE_BINARY);
if (empty($infile))
return "";
// Get all text data.
$transformations = array();
$texts = array();
// Get the list of all objects.
preg_match_all("#obj[\n|\r](.*)endobj[\n|\r]#ismU", $infile . "endobj\r", $objects);
$objects = #$objects[1];
// Select objects with streams.
for ($i = 0; $i < count($objects); $i++) {
$currentObject = $objects[$i];
// Prevent time-out
#set_time_limit ();
if($this->showprogress) {
// echo ". ";
flush(); ob_flush();
}
// Check if an object includes data stream.
if (preg_match("#stream[\n|\r](.*)endstream[\n|\r]#ismU", $currentObject . "endstream\r", $stream )) {
$stream = ltrim($stream[1]);
// Check object parameters and look for text data.
$options = $this->getObjectOptions($currentObject);
if (!(empty($options["Length1"]) && empty($options["Type"]) && empty($options["Subtype"])) )
// if ( $options["Image"] && $options["Subtype"] )
// if (!(empty($options["Length1"]) && empty($options["Subtype"])) )
continue;
// Hack, length doesnt always seem to be correct
unset($options["Length"]);
// So, we have text data. Decode it.
$data = $this->getDecodedStream($stream, $options);
if (strlen($data)) {
if (preg_match_all("#BT[\n|\r](.*)ET[\n|\r]#ismU", $data . "ET\r", $textContainers)) {
$textContainers = #$textContainers[1];
$this->getDirtyTexts($texts, $textContainers);
} else
$this->getCharTransformations($transformations, $data);
}
}
}
// Analyze text blocks taking into account character transformations and return results.
$this->decodedtext = $this->getTextUsingTransformations($texts, $transformations);
}
function decodeAsciiHex($input) {
$output = "";
$isOdd = true;
$isComment = false;
for($i = 0, $codeHigh = -1; $i < strlen($input) && $input[$i] != '>'; $i++) {
$c = $input[$i];
if($isComment) {
if ($c == '\r' || $c == '\n')
$isComment = false;
continue;
}
switch($c) {
case '\0': case '\t': case '\r': case '\f': case '\n': case ' ': break;
case '%':
$isComment = true;
break;
default:
$code = hexdec($c);
if($code === 0 && $c != '0')
return "";
if($isOdd)
$codeHigh = $code;
else
$output .= chr($codeHigh * 16 + $code);
$isOdd = !$isOdd;
break;
}
}
if($input[$i] != '>')
return "";
if($isOdd)
$output .= chr($codeHigh * 16);
return $output;
}
function decodeAscii85($input) {
$output = "";
$isComment = false;
$ords = array();
for($i = 0, $state = 0; $i < strlen($input) && $input[$i] != '~'; $i++) {
$c = $input[$i];
if($isComment) {
if ($c == '\r' || $c == '\n')
$isComment = false;
continue;
}
if ($c == '\0' || $c == '\t' || $c == '\r' || $c == '\f' || $c == '\n' || $c == ' ')
continue;
if ($c == '%') {
$isComment = true;
continue;
}
if ($c == 'z' && $state === 0) {
$output .= str_repeat(chr(0), 4);
continue;
}
if ($c < '!' || $c > 'u')
return "";
$code = ord($input[$i]) & 0xff;
$ords[$state++] = $code - ord('!');
if ($state == 5) {
$state = 0;
for ($sum = 0, $j = 0; $j < 5; $j++)
$sum = $sum * 85 + $ords[$j];
for ($j = 3; $j >= 0; $j--)
$output .= chr($sum >> ($j * 8));
}
}
if ($state === 1)
return "";
elseif ($state > 1) {
for ($i = 0, $sum = 0; $i < $state; $i++)
$sum += ($ords[$i] + ($i == $state - 1)) * pow(85, 4 - $i);
for ($i = 0; $i < $state - 1; $i++) {
try {
if(false == ($o = chr($sum >> ((3 - $i) * 8)))) {
throw new Exception('Error');
}
$output .= $o;
} catch (Exception $e) { /*Dont do anything*/ }
}
}
return $output;
}
function decodeFlate($data) {
return #gzuncompress($data);
}
function getObjectOptions($object) {
$options = array();
if (preg_match("#<<(.*)>>#ismU", $object, $options)) {
$options = explode("/", $options[1]);
#array_shift($options);
$o = array();
for ($j = 0; $j < #count($options); $j++) {
$options[$j] = preg_replace("#\s+#", " ", trim($options[$j]));
if (strpos($options[$j], " ") !== false) {
$parts = explode(" ", $options[$j]);
$o[$parts[0]] = $parts[1];
} else
$o[$options[$j]] = true;
}
$options = $o;
unset($o);
}
return $options;
}
function getDecodedStream($stream, $options) {
$data = "";
if (empty($options["Filter"]))
$data = $stream;
else {
$length = !empty($options["Length"]) ? $options["Length"] : strlen($stream);
$_stream = substr($stream, 0, $length);
foreach ($options as $key => $value) {
if ($key == "ASCIIHexDecode")
$_stream = $this->decodeAsciiHex($_stream);
elseif ($key == "ASCII85Decode")
$_stream = $this->decodeAscii85($_stream);
elseif ($key == "FlateDecode")
$_stream = $this->decodeFlate($_stream);
elseif ($key == "Crypt") { // TO DO
}
}
$data = $_stream;
}
return $data;
}
function getDirtyTexts(&$texts, $textContainers) {
for ($j = 0; $j < count($textContainers); $j++) {
if (preg_match_all("#\[(.*)\]\s*TJ[\n|\r]#ismU", $textContainers[$j], $parts))
$texts = array_merge($texts, array(#implode('', $parts[1])));
elseif (preg_match_all("#T[d|w|m|f]\s*(\(.*\))\s*Tj[\n|\r]#ismU", $textContainers[$j], $parts))
$texts = array_merge($texts, array(#implode('', $parts[1])));
elseif (preg_match_all("#T[d|w|m|f]\s*(\[.*\])\s*Tj[\n|\r]#ismU", $textContainers[$j], $parts))
$texts = array_merge($texts, array(#implode('', $parts[1])));
}
}
function getCharTransformations(&$transformations, $stream) {
preg_match_all("#([0-9]+)\s+beginbfchar(.*)endbfchar#ismU", $stream, $chars, PREG_SET_ORDER);
preg_match_all("#([0-9]+)\s+beginbfrange(.*)endbfrange#ismU", $stream, $ranges, PREG_SET_ORDER);
for ($j = 0; $j < count($chars); $j++) {
$count = $chars[$j][1];
$current = explode("\n", trim($chars[$j][2]));
for ($k = 0; $k < $count && $k < count($current); $k++) {
if (preg_match("#<([0-9a-f]{2,4})>\s+<([0-9a-f]{4,512})>#is", trim($current[$k]), $map))
$transformations[str_pad($map[1], 4, "0")] = $map[2];
}
}
for ($j = 0; $j < count($ranges); $j++) {
$count = $ranges[$j][1];
$current = explode("\n", trim($ranges[$j][2]));
for ($k = 0; $k < $count && $k < count($current); $k++) {
if (preg_match("#<([0-9a-f]{4})>\s+<([0-9a-f]{4})>\s+<([0-9a-f]{4})>#is", trim($current[$k]), $map)) {
$from = hexdec($map[1]);
$to = hexdec($map[2]);
$_from = hexdec($map[3]);
for ($m = $from, $n = 0; $m <= $to; $m++, $n++)
$transformations[sprintf("%04X", $m)] = sprintf("%04X", $_from + $n);
} elseif (preg_match("#<([0-9a-f]{4})>\s+<([0-9a-f]{4})>\s+\[(.*)\]#ismU", trim($current[$k]), $map)) {
$from = hexdec($map[1]);
$to = hexdec($map[2]);
$parts = preg_split("#\s+#", trim($map[3]));
for ($m = $from, $n = 0; $m <= $to && $n < count($parts); $m++, $n++)
$transformations[sprintf("%04X", $m)] = sprintf("%04X", hexdec($parts[$n]));
}
}
}
}
function getTextUsingTransformations($texts, $transformations) {
$document = "";
for ($i = 0; $i < count($texts); $i++) {
$isHex = false;
$isPlain = false;
$hex = "";
$plain = "";
for ($j = 0; $j < strlen($texts[$i]); $j++) {
$c = $texts[$i][$j];
switch($c) {
case "<":
$hex = "";
$isHex = true;
$isPlain = false;
break;
case ">":
$hexs = str_split($hex, $this->multibyte); // 2 or 4 (UTF8 or ISO)
for ($k = 0; $k < count($hexs); $k++) {
$chex = str_pad($hexs[$k], 4, "0"); // Add tailing zero
if (isset($transformations[$chex]))
$chex = $transformations[$chex];
$document .= html_entity_decode("&#x".$chex.";");
}
$isHex = false;
break;
case "(":
$plain = "";
$isPlain = true;
$isHex = false;
break;
case ")":
$document .= $plain;
$isPlain = false;
break;
case "\\":
$c2 = $texts[$i][$j + 1];
if (in_array($c2, array("\\", "(", ")"))) $plain .= $c2;
elseif ($c2 == "n") $plain .= '\n';
elseif ($c2 == "r") $plain .= '\r';
elseif ($c2 == "t") $plain .= '\t';
elseif ($c2 == "b") $plain .= '\b';
elseif ($c2 == "f") $plain .= '\f';
elseif ($c2 >= '0' && $c2 <= '9') {
$oct = preg_replace("#[^0-9]#", "", substr($texts[$i], $j + 1, 3));
$j += strlen($oct) - 1;
$plain .= html_entity_decode("&#".octdec($oct).";", $this->convertquotes);
}
$j++;
break;
default:
if ($isHex)
$hex .= $c;
elseif ($isPlain)
$plain .= $c;
break;
}
}
$document .= "\n";
}
return $document;
}
}
?>

How can I extract text from PDF files using PHP?

I know there are a lot of PDF extraction methods/techniques, but I'm after a reliable text extractor for PDFs in PHP. All I want is to extract words, but not numbers and no special characters.
Any ideas of solid techniques to achieve this?
The Zend Framework provides Zend_Pdf, a php class that will load and parse pdf documents.
Here is a script that shows how to extract the text from a loaded Zend_Pdf object.
If you use laravel, you can try my library...
<?php
namespace App\Helpers;
/*
SYNTAX:
include('class.pdf2text.php');
$a = new PDF2Text();
$a->setFilename('test.pdf');
$a->decodePDF();
echo $a->output();
*/
class PDF2Text {
// Some settings
var $multibyte = 4; // Use setUnicode(TRUE|FALSE)
var $convertquotes = ENT_QUOTES; // ENT_COMPAT (double-quotes), ENT_QUOTES (Both), ENT_NOQUOTES (None)
var $showprogress = false; // TRUE if you have problems with time-out
// Variables
var $filename = '';
var $decodedtext = '';
function setFilename($filename) {
$this->decodedtext = '';
$this->filename = $filename;
}
function output($echo = false) {
if($echo) echo $this->decodedtext;
else return $this->decodedtext;
}
function setUnicode($input) {
// 4 for unicode. But 2 should work in most cases just fine
if($input == true) $this->multibyte = 4;
else $this->multibyte = 2;
}
function decodePDF() {
// Read the data from pdf file
$infile = #file_get_contents($this->filename, FILE_BINARY);
if (empty($infile))
return "";
// Get all text data.
$transformations = array();
$texts = array();
// Get the list of all objects.
preg_match_all("#obj[\n|\r](.*)endobj[\n|\r]#ismU", $infile . "endobj\r", $objects);
$objects = #$objects[1];
// Select objects with streams.
for ($i = 0; $i < count($objects); $i++) {
$currentObject = $objects[$i];
// Prevent time-out
#set_time_limit ();
if($this->showprogress) {
flush(); ob_flush();
}
// Check if an object includes data stream.
if (preg_match("#stream[\n|\r](.*)endstream[\n|\r]#ismU", $currentObject . "endstream\r", $stream )) {
$stream = ltrim($stream[1]);
// Check object parameters and look for text data.
$options = $this->getObjectOptions($currentObject);
if (!(empty($options["Length1"]) && empty($options["Type"]) && empty($options["Subtype"])) )
continue;
unset($options["Length"]);
// So, we have text data. Decode it.
$data = $this->getDecodedStream($stream, $options);
if (strlen($data)) {
if (preg_match_all("#BT[\n|\r](.*)ET[\n|\r]#ismU", $data . "ET\r", $textContainers)) {
$textContainers = #$textContainers[1];
$this->getDirtyTexts($texts, $textContainers);
} else
$this->getCharTransformations($transformations, $data);
}
}
}
// Analyze text blocks taking into account character transformations and return results.
$this->decodedtext = $this->getTextUsingTransformations($texts, $transformations);
}
function decodeAsciiHex($input) {
$output = "";
$isOdd = true;
$isComment = false;
for($i = 0, $codeHigh = -1; $i < strlen($input) && $input[$i] != '>'; $i++) {
$c = $input[$i];
if($isComment) {
if ($c == '\r' || $c == '\n')
$isComment = false;
continue;
}
switch($c) {
case '\0': case '\t': case '\r': case '\f': case '\n': case ' ': break;
case '%':
$isComment = true;
break;
default:
$code = hexdec($c);
if($code === 0 && $c != '0')
return "";
if($isOdd)
$codeHigh = $code;
else
$output .= chr($codeHigh * 16 + $code);
$isOdd = !$isOdd;
break;
}
}
if($input[$i] != '>')
return "";
if($isOdd)
$output .= chr($codeHigh * 16);
return $output;
}
function decodeAscii85($input) {
$output = "";
$isComment = false;
$ords = array();
for($i = 0, $state = 0; $i < strlen($input) && $input[$i] != '~'; $i++) {
$c = $input[$i];
if($isComment) {
if ($c == '\r' || $c == '\n')
$isComment = false;
continue;
}
if ($c == '\0' || $c == '\t' || $c == '\r' || $c == '\f' || $c == '\n' || $c == ' ')
continue;
if ($c == '%') {
$isComment = true;
continue;
}
if ($c == 'z' && $state === 0) {
$output .= str_repeat(chr(0), 4);
continue;
}
if ($c < '!' || $c > 'u')
return "";
$code = ord($input[$i]) & 0xff;
$ords[$state++] = $code - ord('!');
if ($state == 5) {
$state = 0;
for ($sum = 0, $j = 0; $j < 5; $j++)
$sum = $sum * 85 + $ords[$j];
for ($j = 3; $j >= 0; $j--)
$output .= chr($sum >> ($j * 8));
}
}
if ($state === 1)
return "";
elseif ($state > 1) {
for ($i = 0, $sum = 0; $i < $state; $i++)
$sum += ($ords[$i] + ($i == $state - 1)) * pow(85, 4 - $i);
for ($i = 0; $i < $state - 1; $i++) {
try {
if(false == ($o = chr($sum >> ((3 - $i) * 8)))) {
throw new Exception('Error');
}
$output .= $o;
} catch (Exception $e) { /*Dont do anything*/ }
}
}
return $output;
}
function decodeFlate($data) {
return #gzuncompress($data);
}
function getObjectOptions($object) {
$options = array();
if (preg_match("#<<(.*)>>#ismU", $object, $options)) {
$options = explode("/", $options[1]);
#array_shift($options);
$o = array();
for ($j = 0; $j < #count($options); $j++) {
$options[$j] = preg_replace("#\s+#", " ", trim($options[$j]));
if (strpos($options[$j], " ") !== false) {
$parts = explode(" ", $options[$j]);
$o[$parts[0]] = $parts[1];
} else
$o[$options[$j]] = true;
}
$options = $o;
unset($o);
}
return $options;
}
function getDecodedStream($stream, $options) {
$data = "";
if (empty($options["Filter"]))
$data = $stream;
else {
$length = !empty($options["Length"]) ? $options["Length"] : strlen($stream);
$_stream = substr($stream, 0, $length);
foreach ($options as $key => $value) {
if ($key == "ASCIIHexDecode")
$_stream = $this->decodeAsciiHex($_stream);
elseif ($key == "ASCII85Decode")
$_stream = $this->decodeAscii85($_stream);
elseif ($key == "FlateDecode")
$_stream = $this->decodeFlate($_stream);
elseif ($key == "Crypt") { // TO DO
}
}
$data = $_stream;
}
return $data;
}
function getDirtyTexts(&$texts, $textContainers) {
for ($j = 0; $j < count($textContainers); $j++) {
if (preg_match_all("#\[(.*)\]\s*TJ[\n|\r]#ismU", $textContainers[$j], $parts))
$texts = array_merge($texts, array(#implode('', $parts[1])));
elseif (preg_match_all("#T[d|w|m|f]\s*(\(.*\))\s*Tj[\n|\r]#ismU", $textContainers[$j], $parts))
$texts = array_merge($texts, array(#implode('', $parts[1])));
elseif (preg_match_all("#T[d|w|m|f]\s*(\[.*\])\s*Tj[\n|\r]#ismU", $textContainers[$j], $parts))
$texts = array_merge($texts, array(#implode('', $parts[1])));
}
}
function getCharTransformations(&$transformations, $stream) {
preg_match_all("#([0-9]+)\s+beginbfchar(.*)endbfchar#ismU", $stream, $chars, PREG_SET_ORDER);
preg_match_all("#([0-9]+)\s+beginbfrange(.*)endbfrange#ismU", $stream, $ranges, PREG_SET_ORDER);
for ($j = 0; $j < count($chars); $j++) {
$count = $chars[$j][1];
$current = explode("\n", trim($chars[$j][2]));
for ($k = 0; $k < $count && $k < count($current); $k++) {
if (preg_match("#<([0-9a-f]{2,4})>\s+<([0-9a-f]{4,512})>#is", trim($current[$k]), $map))
$transformations[str_pad($map[1], 4, "0")] = $map[2];
}
}
for ($j = 0; $j < count($ranges); $j++) {
$count = $ranges[$j][1];
$current = explode("\n", trim($ranges[$j][2]));
for ($k = 0; $k < $count && $k < count($current); $k++) {
if (preg_match("#<([0-9a-f]{4})>\s+<([0-9a-f]{4})>\s+<([0-9a-f]{4})>#is", trim($current[$k]), $map)) {
$from = hexdec($map[1]);
$to = hexdec($map[2]);
$_from = hexdec($map[3]);
for ($m = $from, $n = 0; $m <= $to; $m++, $n++)
$transformations[sprintf("%04X", $m)] = sprintf("%04X", $_from + $n);
} elseif (preg_match("#<([0-9a-f]{4})>\s+<([0-9a-f]{4})>\s+\[(.*)\]#ismU", trim($current[$k]), $map)) {
$from = hexdec($map[1]);
$to = hexdec($map[2]);
$parts = preg_split("#\s+#", trim($map[3]));
for ($m = $from, $n = 0; $m <= $to && $n < count($parts); $m++, $n++)
$transformations[sprintf("%04X", $m)] = sprintf("%04X", hexdec($parts[$n]));
}
}
}
}
function getTextUsingTransformations($texts, $transformations) {
$document = "";
for ($i = 0; $i < count($texts); $i++) {
$isHex = false;
$isPlain = false;
$hex = "";
$plain = "";
for ($j = 0; $j < strlen($texts[$i]); $j++) {
$c = $texts[$i][$j];
switch($c) {
case "<":
$hex = "";
$isHex = true;
$isPlain = false;
break;
case ">":
$hexs = str_split($hex, $this->multibyte); // 2 or 4 (UTF8 or ISO)
for ($k = 0; $k < count($hexs); $k++) {
$chex = str_pad($hexs[$k], 4, "0"); // Add tailing zero
if (isset($transformations[$chex]))
$chex = $transformations[$chex];
$document .= html_entity_decode("&#x".$chex.";");
}
$isHex = false;
break;
case "(":
$plain = "";
$isPlain = true;
$isHex = false;
break;
case ")":
$document .= $plain;
$isPlain = false;
break;
case "\\":
$c2 = $texts[$i][$j + 1];
if (in_array($c2, array("\\", "(", ")"))) $plain .= $c2;
elseif ($c2 == "n") $plain .= '\n';
elseif ($c2 == "r") $plain .= '\r';
elseif ($c2 == "t") $plain .= '\t';
elseif ($c2 == "b") $plain .= '\b';
elseif ($c2 == "f") $plain .= '\f';
elseif ($c2 >= '0' && $c2 <= '9') {
$oct = preg_replace("#[^0-9]#", "", substr($texts[$i], $j + 1, 3));
$j += strlen($oct) - 1;
$plain .= html_entity_decode("&#".octdec($oct).";", $this->convertquotes);
}
$j++;
break;
default:
if ($isHex)
$hex .= $c;
elseif ($isPlain)
$plain .= $c;
break;
}
}
$document .= "\n";
//$document .= "<br>";
}
return $document;
}
}

Cutting text without destroying html tags

Is there a way to do this without writing my own function?
For example:
$text = 'Test <span><a>something</a> something else</span>.';
$text = cutText($text, 2, null, 20, true);
//result: Test <span><a>something</a></span>
I need to make this function indestructible
My problem is similar to
This thread
but I need a better solution. I would like to keep nested tags untouched.
So far my algorithm is:
function cutText($content, $max_words, $max_chars, $max_word_len, $html = false) {
$len = strlen($content);
$res = '';
$word_count = 0;
$word_started = false;
$current_word = '';
$current_word_len = 0;
if ($max_chars == null) {
$max_chars = $len;
}
$inHtml = false;
$openedTags = array();
for ($i = 0; $i<$max_chars;$i++) {
if ($content[$i] == '<' && $html) {
$inHtml = true;
}
if ($inHtml) {
$max_chars++;
}
if ($html && !$inHtml) {
if ($content[$i] != ' ' && !$word_started) {
$word_started = true;
$word_count++;
}
$current_word .= $content[$i];
$current_word_len++;
if ($current_word_len == $max_word_len) {
$current_word .= '- ';
}
if (($content[$i] == ' ') && $word_started) {
$word_started = false;
$res .= $current_word;
$current_word = '';
$current_word_len = 0;
if ($word_count == $max_words) {
return $res;
}
}
}
if ($content[$i] == '<' && $html) {
$inHtml = true;
}
}
return $res;
}
But of course it won't work. I thought about remembering opened tags and closing them if they were not closed but maybe there is a better way?
This works perfectly for me:
function trimContent ($str, $trimAtIndex) {
$beginTags = array();
$endTags = array();
for($i = 0; $i < strlen($str); $i++) {
if( $str[$i] == '<' )
$beginTags[] = $i;
else if($str[$i] == '>')
$endTags[] = $i;
}
foreach($beginTags as $k=>$index) {
// Trying to trim in between tags. Trim after the last tag
if( ( $trimAtIndex >= $index ) && ($trimAtIndex <= $endTags[$k]) ) {
$trimAtIndex = $endTags[$k];
}
}
return substr($str, 0, $trimAtIndex);
}
Try something like this
function cutText($inputText, $start, $length) {
$temp = $inputText;
$res = array();
while (strpos($temp, '>')) {
$ts = strpos($temp, '<');
$te = strpos($temp, '>');
if ($ts > 0) $res[] = substr($temp, 0, $ts);
$res[] = substr($temp, $ts, $te - $ts + 1);
$temp = substr($temp, $te + 1, strlen($temp) - $te);
}
if ($temp != '') $res[] = $temp;
$pointer = 0;
$end = $start + $length - 1;
foreach ($res as &$part) {
if (substr($part, 0, 1) != '<') {
$l = strlen($part);
$p1 = $pointer;
$p2 = $pointer + $l - 1;
$partx = "";
if ($start <= $p1 && $end >= $p2) $partx = "";
else {
if ($start > $p1 && $start <= $p2) $partx .= substr($part, 0, $start-$pointer);
if ($end >= $p1 && $end < $p2) $partx .= substr($part, $end-$pointer+1, $l-$end+$pointer);
if ($partx == "") $partx = $part;
}
$part = $partx;
$pointer += $l;
}
}
return join('', $res);
}
Parameters:
$inputText - input text
$start - position of first character
$length - how menu characters we want to remove
Example #1 - Removing first 3 characters
$text = 'Test <span><a>something</a> something else</span>.';
$text = cutText($text, 0, 3);
var_dump($text);
Output (removed "Tes")
string(47) "t <span><a>something</a> something else</span>."
Removing first 10 characters
$text = cutText($text, 0, 10);
Output (removed "Test somet")
string(40) "<span><a>hing</a> something else</span>."
Example 2 - Removing inner characters - "es" from "Test "
$text = cutText($text, 1, 2);
Output
string(48) "Tt <span><a>something</a> something else</span>."
Removing "thing something el"
$text = cutText($text, 9, 18);
Output
string(32) "Test <span><a>some</a>se</span>."
Hope this helps.
Well, maybe this is not the best solution but it's everything I can do at the moment.
Ok I solved this thing.
I divided this in 2 parts.
First cutting text without destroying html:
function cutHtml($content, $max_words, $max_chars, $max_word_len) {
$len = strlen($content);
$res = '';
$word_count = 0;
$word_started = false;
$current_word = '';
$current_word_len = 0;
if ($max_chars == null) {
$max_chars = $len;
}
$inHtml = false;
$openedTags = array();
$i = 0;
while ($i < $max_chars) {
//skip any html tags
if ($content[$i] == '<') {
$inHtml = true;
while (true) {
$res .= $content[$i];
$i++;
while($content[$i] == ' ') { $res .= $content[$i]; $i++; }
//skip any values
if ($content[$i] == "'") {
$res .= $content[$i];
$i++;
while(!($content[$i] == "'" && $content[$i-1] != "\\")) {
$res .= $content[$i];
$i++;
}
}
//skip any values
if ($content[$i] == '"') {
$res .= $content[$i];
$i++;
while(!($content[$i] == '"' && $content[$i-1] != "\\")) {
$res .= $content[$i];
$i++;
}
}
if ($content[$i] == '>') { $res .= $content[$i]; $i++; break;}
}
$inHtml = false;
}
if (!$inHtml) {
while($content[$i] == ' ') { $res .= $content[$i]; $letter_count++; $i++; } //skip spaces
$word_started = false;
$current_word = '';
$current_word_len = 0;
while (!in_array($content[$i], array(' ', '<', '.', ','))) {
if (!$word_started) {
$word_started = true;
$word_count++;
}
$current_word .= $content[$i];
$current_word_len++;
if ($current_word_len == $max_word_len) {
$current_word .= '-';
$current_word_len = 0;
}
$i++;
}
if ($letter_count > $max_chars) {
return $res;
}
if ($word_count < $max_words) {
$res .= $current_word;
$letter_count += strlen($current_word);
}
if ($word_count == $max_words) {
$res .= $current_word;
$letter_count += strlen($current_word);
return $res;
}
}
}
return $res;
}
And next thing is closing unclosed tags:
function cleanTags(&$html) {
$count = strlen($html);
$i = -1;
$openedTags = array();
while(true) {
$i++;
if ($i >= $count) break;
if ($html[$i] == '<') {
$tag = '';
$closeTag = '';
$reading = false;
//reading whole tag
while($html[$i] != '>') {
$i++;
while($html[$i] == ' ') $i++; //skip any spaces (need to be idiot proof)
if (!$reading && $html[$i] == '/') { //closing tag
$i++;
while($html[$i] == ' ') $i++; //skip any spaces
$closeTag = '';
while($html[$i] != ' ' && $html[$i] != '>') { //start reading first actuall string
$reading = true;
$html[$i] = strtolower($html[$i]); //tags to lowercase
$closeTag .= $html[$i];
$i++;
}
$c = count($openedTags);
if ($c > 0 && $openedTags[$c-1] == $closeTag) array_pop($openedTags);
}
if (!$reading) //read only tag
while($html[$i] != ' ' && $html[$i] != '>') { //start reading first actuall string
$reading = true;
$html[$i] = strtolower($html[$i]); //tags to lowercase
$tag .= $html[$i];
$i++;
}
//skip any values
if ($html[$i] == "'") {
$i++;
while(!($html[$i] == "'" && $html[$i-1] != "\\")) {
$i++;
}
}
//skip any values
if ($html[$i] == '"') {
$i++;
while(!($html[$i] == '"' && $html[$i-1] != "\\")) {
$i++;
}
}
if ($reading && $html[$i] == '/') { //self closed tag
$tag = '';
break;
}
}
if (!empty($tag)) $openedTags[] = $tag;
}
}
while (count($openedTags) > 0) {
$tag = array_pop($openedTags);
$html .= "</$tag>";
}
}
It's not idiot proof but tinymce will clear this thing out so further cleaning is not necessary.
It may be a little long but i don't think it will eat a lot of resources and it should be faster than regex.

What can be improved in this PHP code?

This is a custom encryption library. I do not know much about PHP's standard library of functions and was wondering if the following code can be improved in any way. The implementation should yield the same results, the API should remain as it is, but ways to make is more PHP-ish would be greatly appreciated.
Code
<?php
/***************************************
Create random major and minor SPICE key.
***************************************/
function crypt_major()
{
$all = range("\x00", "\xFF");
shuffle($all);
$major_key = implode("", $all);
return $major_key;
}
function crypt_minor()
{
$sample = array();
do
{
array_push($sample, 0, 1, 2, 3);
} while (count($sample) != 256);
shuffle($sample);
$list = array();
for ($index = 0; $index < 64; $index++)
{
$b12 = $sample[$index * 4] << 6;
$b34 = $sample[$index * 4 + 1] << 4;
$b56 = $sample[$index * 4 + 2] << 2;
$b78 = $sample[$index * 4 + 3];
array_push($list, $b12 + $b34 + $b56 + $b78);
}
$minor_key = implode("", array_map("chr", $list));
return $minor_key;
}
/***************************************
Create the SPICE key via the given name.
***************************************/
function named_major($name)
{
srand(crc32($name));
return crypt_major();
}
function named_minor($name)
{
srand(crc32($name));
return crypt_minor();
}
/***************************************
Check validity for major and minor keys.
***************************************/
function _check_major($key)
{
if (is_string($key) && strlen($key) == 256)
{
foreach (range("\x00", "\xFF") as $char)
{
if (substr_count($key, $char) == 0)
{
return FALSE;
}
}
return TRUE;
}
return FALSE;
}
function _check_minor($key)
{
if (is_string($key) && strlen($key) == 64)
{
$indexs = array();
foreach (array_map("ord", str_split($key)) as $byte)
{
foreach (range(6, 0, 2) as $shift)
{
array_push($indexs, ($byte >> $shift) & 3);
}
}
$dict = array_count_values($indexs);
foreach (range(0, 3) as $index)
{
if ($dict[$index] != 64)
{
return FALSE;
}
}
return TRUE;
}
return FALSE;
}
/***************************************
Create encode maps for encode functions.
***************************************/
function _encode_map_1($major)
{
return array_map("ord", str_split($major));
}
function _encode_map_2($minor)
{
$map_2 = array(array(), array(), array(), array());
$list = array();
foreach (array_map("ord", str_split($minor)) as $byte)
{
foreach (range(6, 0, 2) as $shift)
{
array_push($list, ($byte >> $shift) & 3);
}
}
for ($byte = 0; $byte < 256; $byte++)
{
array_push($map_2[$list[$byte]], chr($byte));
}
return $map_2;
}
/***************************************
Create decode maps for decode functions.
***************************************/
function _decode_map_1($minor)
{
$map_1 = array();
foreach (array_map("ord", str_split($minor)) as $byte)
{
foreach (range(6, 0, 2) as $shift)
{
array_push($map_1, ($byte >> $shift) & 3);
}
}
return $map_1;
}function _decode_map_2($major)
{
$map_2 = array();
$temp = array_map("ord", str_split($major));
for ($byte = 0; $byte < 256; $byte++)
{
$map_2[$temp[$byte]] = chr($byte);
}
return $map_2;
}
/***************************************
Encrypt or decrypt the string with maps.
***************************************/
function _encode($string, $map_1, $map_2)
{
$cache = "";
foreach (str_split($string) as $char)
{
$byte = $map_1[ord($char)];
foreach (range(6, 0, 2) as $shift)
{
$cache .= $map_2[($byte >> $shift) & 3][mt_rand(0, 63)];
}
}
return $cache;
}
function _decode($string, $map_1, $map_2)
{
$cache = "";
$temp = str_split($string);
for ($iter = 0; $iter < strlen($string) / 4; $iter++)
{
$b12 = $map_1[ord($temp[$iter * 4])] << 6;
$b34 = $map_1[ord($temp[$iter * 4 + 1])] << 4;
$b56 = $map_1[ord($temp[$iter * 4 + 2])] << 2;
$b78 = $map_1[ord($temp[$iter * 4 + 3])];
$cache .= $map_2[$b12 + $b34 + $b56 + $b78];
}
return $cache;
}
/***************************************
This is the public interface for coding.
***************************************/
function encode_string($string, $major, $minor)
{
if (is_string($string))
{
if (_check_major($major) && _check_minor($minor))
{
$map_1 = _encode_map_1($major);
$map_2 = _encode_map_2($minor);
return _encode($string, $map_1, $map_2);
}
}
return FALSE;
}
function decode_string($string, $major, $minor)
{
if (is_string($string) && strlen($string) % 4 == 0)
{
if (_check_major($major) && _check_minor($minor))
{
$map_1 = _decode_map_1($minor);
$map_2 = _decode_map_2($major);
return _decode($string, $map_1, $map_2);
}
}
return FALSE;
}
?>
This is a sample showing how the code is being used. Hex editors may be of help with the input / output.
Example
<?php
# get and process all of the form data
# $input = htmlspecialchars($_POST["input"]);
# $majorname = htmlspecialchars($_POST["majorname"]);
# $minorname = htmlspecialchars($_POST["minorname"]);
# $majorkey = htmlspecialchars($_POST["majorkey"]);
# $minorkey = htmlspecialchars($_POST["minorkey"]);
# $output = htmlspecialchars($_POST["output"]);
# process the submissions by operation
# CREATE
# $operation = $_POST["operation"];
if ($operation == "Create")
{
if (strlen($_POST["majorname"]) == 0)
{
$majorkey = bin2hex(crypt_major());
}
if (strlen($_POST["minorname"]) == 0)
{
$minorkey = bin2hex(crypt_minor());
}
if (strlen($_POST["majorname"]) != 0)
{
$majorkey = bin2hex(named_major($_POST["majorname"]));
}
if (strlen($_POST["minorname"]) != 0)
{
$minorkey = bin2hex(named_minor($_POST["minorname"]));
}
}
# ENCRYPT or DECRYPT
function is_hex($char)
{
if ($char == "0"):
return TRUE;
elseif ($char == "1"):
return TRUE;
elseif ($char == "2"):
return TRUE;
elseif ($char == "3"):
return TRUE;
elseif ($char == "4"):
return TRUE;
elseif ($char == "5"):
return TRUE;
elseif ($char == "6"):
return TRUE;
elseif ($char == "7"):
return TRUE;
elseif ($char == "8"):
return TRUE;
elseif ($char == "9"):
return TRUE;
elseif ($char == "a"):
return TRUE;
elseif ($char == "b"):
return TRUE;
elseif ($char == "c"):
return TRUE;
elseif ($char == "d"):
return TRUE;
elseif ($char == "e"):
return TRUE;
elseif ($char == "f"):
return TRUE;
else:
return FALSE;
endif;
}
function hex2bin($str)
{
if (strlen($str) % 2 == 0):
$string = strtolower($str);
else:
$string = strtolower("0" . $str);
endif;
$cache = "";
$temp = str_split($str);
for ($index = 0; $index < count($temp) / 2; $index++)
{
$h1 = $temp[$index * 2];
if (is_hex($h1))
{
$h2 = $temp[$index * 2 + 1];
if (is_hex($h2))
{
$cache .= chr(hexdec($h1 . $h2));
}
else
{
return FALSE;
}
}
else
{
return FALSE;
}
}
return $cache;
}
if ($operation == "Encrypt" || $operation == "Decrypt")
{
# CHECK FOR ANY ERROR
$errors = array();
if (strlen($_POST["input"]) == 0)
{
$output = "";
}
$binmajor = hex2bin($_POST["majorkey"]);
if (strlen($_POST["majorkey"]) == 0)
{
array_push($errors, "There must be a major key.");
}
elseif ($binmajor == FALSE)
{
array_push($errors, "The major key must be in hex.");
}
elseif (_check_major($binmajor) == FALSE)
{
array_push($errors, "The major key is corrupt.");
}
$binminor = hex2bin($_POST["minorkey"]);
if (strlen($_POST["minorkey"]) == 0)
{
array_push($errors, "There must be a minor key.");
}
elseif ($binminor == FALSE)
{
array_push($errors, "The minor key must be in hex.");
}
elseif (_check_minor($binminor) == FALSE)
{
array_push($errors, "The minor key is corrupt.");
}
if ($_POST["operation"] == "Decrypt")
{
$bininput = hex2bin(str_replace("\r", "", str_replace("\n", "", $_POST["input"])));
if ($bininput == FALSE)
{
if (strlen($_POST["input"]) != 0)
{
array_push($errors, "The input data must be in hex.");
}
}
elseif (strlen($bininput) % 4 != 0)
{
array_push($errors, "The input data is corrupt.");
}
}
if (count($errors) != 0)
{
# ERRORS ARE FOUND
$output = "ERROR:";
foreach ($errors as $error)
{
$output .= "\n" . $error;
}
}
elseif (strlen($_POST["input"]) != 0)
{
# CONTINUE WORKING
if ($_POST["operation"] == "Encrypt")
{
# ENCRYPT
$output = substr(chunk_split(bin2hex(encode_string($_POST["input"], $binmajor, $binminor)), 58), 0, -2);
}
else
{
# DECRYPT
$output = htmlspecialchars(decode_string($bininput, $binmajor, $binminor));
}
}
}
# echo the form with the values filled
echo "<P><TEXTAREA class=maintextarea name=input rows=25 cols=25>" . $input . "</TEXTAREA></P>\n";
echo "<P>Major Name:</P>\n";
echo "<P><INPUT id=textbox1 name=majorname value=\"" . $majorname . "\"></P>\n";
echo "<P>Minor Name:</P>\n";
echo "<P><INPUT id=textbox1 name=minorname value=\"" . $minorname . "\"></P>\n";
echo "<DIV style=\"TEXT-ALIGN: center\"><INPUT class=submit type=submit value=Create name=operation>\n";
echo "</DIV>\n";
echo "<P>Major Key:</P>\n";
echo "<P><INPUT id=textbox1 name=majorkey value=\"" . $majorkey . "\"></P>\n";
echo "<P>Minor Key:</P>\n";
echo "<P><INPUT id=textbox1 name=minorkey value=\"" . $minorkey . "\"></P>\n";
echo "<DIV style=\"TEXT-ALIGN: center\"><INPUT class=submit type=submit value=Encrypt name=operation> \n";
echo "<INPUT class=submit type=submit value=Decrypt name=operation> </DIV>\n";
echo "<P>Result:</P>\n";
echo "<P><TEXTAREA class=maintextarea name=output rows=25 readOnly cols=25>" . $output . "</TEXTAREA></P></DIV></FORM>\n";
?>
What should be editted for better memory efficiency or faster execution?
You could replace your isHex function with:
function isHex($char) {
return strpos("0123456789ABCDEF",strtoupper($char)) > -1;
}
And your hex2bin might be better as:
function hex2bin($h)
{
if (!is_string($h)) return null;
$r='';
for ($a=0; $a<strlen($h); $a+=2) { $r.=chr(hexdec($h{$a}.$h{($a+1)})); }
return $r;
}
You seem to have a lot of if..elseif...elseif...elseif which would be a lot cleaner in a switch or seperated into different methods.
However, I'm talking more from a maintainability and readability perspective - although the easier it is to read and understand, the easier it is to optimize. If it would help you if I waded through all the code and wrote it in a cleaner way, then I'll do so...

Easiest way to remove all whitespace from a code file?

I'm participating in one of the Code Golf competitions where the smaller your file size is, the better.
Rather than manually removing all whitespace, etc., I'm looking for a program or website which will take a file, remove all whitespace (including new lines) and return a compact version of the file. Any ideas?
You could use:
sed 's/\s\s+/ /g' youfile > yourpackedfile`
There is also this online tool.
You can even do it in PHP (how marvelous is life):
$data = file_get_contents('foobar.php');
$data = preg_replace('/\s\s+/', ' ', $data);
file_put_contents('foobar2.php', $data);
You have to note this won't take care of a string variable like $bar = ' asd aa a'; it might be a problem depending on what you are doing. The online tool seems to handle this properly.
$ tr -d ' \n' <oldfile >newfile
In PowerShell (v2) this can be done with the following little snippet:
(-join(gc my_file))-replace"\s"
or longer:
(-join (Get-Content my_file)) -replace "\s"
It will join all lines together and remove all spaces and tabs.
However, for some languages you probably don't want to do that. In PowerShell for example you don't need semicolons unless you put multiple statements on a single line so code like
while (1) {
"Hello World"
$x++
}
would become
while(1){"HelloWorld"$x++}
when applying aforementioned statements naïvely. It both changed the meaning and the syntactical correctness of the program. Probably not too much to look out for in numerical golfed solutions but the issue with lines joined together still remains, sadly. Just putting a semicolon between each line doesn't actually help either.
This is a PHP function that will do the work for you:
function compress_php_src($src) {
// Whitespaces left and right from this signs can be ignored
static $IW = array(
T_CONCAT_EQUAL, // .=
T_DOUBLE_ARROW, // =>
T_BOOLEAN_AND, // &&
T_BOOLEAN_OR, // ||
T_IS_EQUAL, // ==
T_IS_NOT_EQUAL, // != or <>
T_IS_SMALLER_OR_EQUAL, // <=
T_IS_GREATER_OR_EQUAL, // >=
T_INC, // ++
T_DEC, // --
T_PLUS_EQUAL, // +=
T_MINUS_EQUAL, // -=
T_MUL_EQUAL, // *=
T_DIV_EQUAL, // /=
T_IS_IDENTICAL, // ===
T_IS_NOT_IDENTICAL, // !==
T_DOUBLE_COLON, // ::
T_PAAMAYIM_NEKUDOTAYIM, // ::
T_OBJECT_OPERATOR, // ->
T_DOLLAR_OPEN_CURLY_BRACES, // ${
T_AND_EQUAL, // &=
T_MOD_EQUAL, // %=
T_XOR_EQUAL, // ^=
T_OR_EQUAL, // |=
T_SL, // <<
T_SR, // >>
T_SL_EQUAL, // <<=
T_SR_EQUAL, // >>=
);
if(is_file($src)) {
if(!$src = file_get_contents($src)) {
return false;
}
}
$tokens = token_get_all($src);
$new = "";
$c = sizeof($tokens);
$iw = false; // Ignore whitespace
$ih = false; // In HEREDOC
$ls = ""; // Last sign
$ot = null; // Open tag
for($i = 0; $i < $c; $i++) {
$token = $tokens[$i];
if(is_array($token)) {
list($tn, $ts) = $token; // tokens: number, string, line
$tname = token_name($tn);
if($tn == T_INLINE_HTML) {
$new .= $ts;
$iw = false;
}
else {
if($tn == T_OPEN_TAG) {
if(strpos($ts, " ") || strpos($ts, "\n") || strpos($ts, "\t") || strpos($ts, "\r")) {
$ts = rtrim($ts);
}
$ts .= " ";
$new .= $ts;
$ot = T_OPEN_TAG;
$iw = true;
} elseif($tn == T_OPEN_TAG_WITH_ECHO) {
$new .= $ts;
$ot = T_OPEN_TAG_WITH_ECHO;
$iw = true;
} elseif($tn == T_CLOSE_TAG) {
if($ot == T_OPEN_TAG_WITH_ECHO) {
$new = rtrim($new, "; ");
} else {
$ts = " ".$ts;
}
$new .= $ts;
$ot = null;
$iw = false;
} elseif(in_array($tn, $IW)) {
$new .= $ts;
$iw = true;
} elseif($tn == T_CONSTANT_ENCAPSED_STRING
|| $tn == T_ENCAPSED_AND_WHITESPACE)
{
if($ts[0] == '"') {
$ts = addcslashes($ts, "\n\t\r");
}
$new .= $ts;
$iw = true;
} elseif($tn == T_WHITESPACE) {
$nt = #$tokens[$i+1];
if(!$iw && (!is_string($nt) || $nt == '$') && !in_array($nt[0], $IW)) {
$new .= " ";
}
$iw = false;
} elseif($tn == T_START_HEREDOC) {
$new .= "<<<S\n";
$iw = false;
$ih = true; // in HEREDOC
} elseif($tn == T_END_HEREDOC) {
$new .= "S;";
$iw = true;
$ih = false; // in HEREDOC
for($j = $i+1; $j < $c; $j++) {
if(is_string($tokens[$j]) && $tokens[$j] == ";") {
$i = $j;
break;
} else if($tokens[$j][0] == T_CLOSE_TAG) {
break;
}
}
} elseif($tn == T_COMMENT || $tn == T_DOC_COMMENT) {
$iw = true;
} else {
if(!$ih) {
$ts = strtolower($ts);
}
$new .= $ts;
$iw = false;
}
}
$ls = "";
}
else {
if(($token != ";" && $token != ":") || $ls != $token) {
$new .= $token;
$ls = $token;
}
$iw = true;
}
}
return $new;
}
// This is an example
$src = file_get_contents('foobar.php');
file_put_contents('foobar3.php',compress_php_src($src));
If your code editor programs supports regular expressions, you can try this:
Find this: [\r\n]{2,}
Replace with this: \n
Then Replace All
Notepad++ is quite a nice editor if you are on Windows, and it has a lot of predefined macros, trimming down code and removing whitespace among them.
It can do regular expressions and has a plethora of features to help the code hacker or script kiddie.
Notepad++ website
Run php -w on it!
php -w myfile.php
Unlike a regular expression, this is smart enough to leave strings alone, and it removes comments too.

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