I am using this piece of code on a site of mine.
If there is PHP code in the array and if you echo it, it does not run.
There is piece of code;
function spin($var){
$words = explode("{",$var);
foreach ($words as $word)
{
$words = explode("}",$word);
foreach ($words as $word)
{
$words = explode("|",$word);
$word = $words[array_rand($words, 1)];
echo $word." ";
}
}
}
$text = "example.com is {the best forum|a <? include(\"myfile.php\");?>Forum|a wonderful Forum|a perfect Forum} {123|some other sting}";
spin($text);
The file that needs to be included "myfile.php" will not be included. and the PHP codes will be visible. Why is that? How can I solve this problem?
I believe that you will want to run the include statement through eval(). However note that:
"The eval() language construct is very dangerous because it allows execution of arbitrary PHP code. Its use thus is discouraged. If you have carefully verified that there is no other option than to use this construct, pay special attention not to pass any user provided data into it without properly validating it beforehand." (PHP.net)
SOURCE: http://php.net/manual/en/function.eval.php
You might try the following:
<?php
function spin($var)
{
$words = explode("\{",$var);
foreach ($words as $word)
{
$words = explode("}",$word);
foreach ($words as $word)
{
$words = explode("|",$word);
$word = $words[array_rand($words, 1)];
if ( preg_match( "/\<\? include\(\\\"([A-Za-z\.]+)\\\"\)\;\?\>/", $word ) )
{
$file = preg_replace( "/^.*\<\? include\(\\\"([A-Za-z\.]+)\\\"\)\;\?\>.*\$/", "\$1", $word );
$pre = preg_replace( "/^(.*)\<\? include\(\\\"[A-Za-z\.]+\\\"\)\;\?\>.*\$/", "\$1", $word );
$post = preg_replace( "/^.*\<\? include\(\\\"[A-Za-z\.]+\\\"\)\;\?\>(.*)\$/", "\$1", $word );
echo $pre;
include( $file );
echo $post;
}
}
}
}
$text = "example.com is {the best forum|a <? include(\"myfile.php\");?>Forum|a wonderful Forum|a perfect Forum} {123|some other sting}";
spin($text);
?>
My suggestion is a bit of other way,
function spin($var){
$words = explode("{",$var);
foreach ($words as $word)
{
$words = explode("}",$word);
foreach ($words as $word)
{
$words = explode("|",$word);
$word = $words[array_rand($words, 1)];
if(str_replace(" ","",$word) == 'thisparam'){
echo 'a';
include("myfile.php");
echo 'Forum';
}else{
echo $word." ";
}
}
}
}
$text = "example.com is {the best forum| thisparam |a wonderful Forum|a perfect Forum} {123|some other sting}";
spin($text);
where thisparam is you variable $test is the parameter to run the if statement.
I place a str_replace infront of $word to replace strings to get exact word.
Well it is just a string of text after all. The echo will just output the text...
I suggest you look to make use of eval http://php.net/manual/en/function.eval.php
I cant really tell why you wish to do this though. Whenever I need to use eval and friends I stop to think "Should I be doing this?"
Related
function Foo($word) {
$lowerword= strtolower($word);
$words = explode(" ", $lowerword);
foreach ($words as $wrd){
echo $wrd[0];
}
}
$word = "my name is";
$firstletters = Foo($word);
Source code above. The idea is to take the first letter from each word in a sentence and piece them together as one string that can then be further manipulated. However, I am having difficulty manipulating the output, making me think that the output is not really one string. How do I convert the output of the foreach loop into a string?
The output is not a string at all indeed. Your function does echo but doesn't return anything.
Try this function:
function Foo($word) {
$lowerword= strtolower($word);
$words = explode(" ", $lowerword);
$firstLetters = '';
foreach ($words as $wrd){
$firstLetters .= $wrd[0];
}
return $firstLetters;
}
This function filer the email from text and return matched pattern
function parse($text, $words)
{
$resultSet = array();
foreach ($words as $word){
$pattern = 'regex to match emails';
preg_match_all($pattern, $text, $matches, PREG_OFFSET_CAPTURE );
$this->pushToResultSet($matches);
}
return $resultSet;
}
Similar way I want to match bad words from text and return them as $resultSet.
Here is code to filter badwords
TEST HERE
$badwords = array('shit', 'fuck'); // Here we can use all bad words from database
$text = 'Man, I shot this f*ck, sh/t! fucking fu*ker sh!t f*cking sh\t ;)';
echo "filtered words <br>";
echo $text."<br/>";
$words = explode(' ', $text);
foreach ($words as $word)
{
$bad= false;
foreach ($badwords as $badword)
{
if (strlen($word) >= strlen($badword))
{
$wordOk = false;
for ($i = 0; $i < strlen($badword); $i++)
{
if ($badword[$i] !== $word[$i] && ctype_alpha($word[$i]))
{
$wordOk = true;
break;
}
}
if (!$wordOk)
{
$bad= true;
break;
}
}
}
echo $bad ? 'beep ' : ($word . ' '); // Here $bad words can be returned and replace with *.
}
Which replaces badwords with beep
But I want to push matched bad words to $this->pushToResultSet() and returning as in first code of email filtering.
can I do this with my bad filtering code?
Roughly converting David Atchley's answer to PHP, does this work as you want it to?
$blocked = array('fuck','shit','damn','hell','ass');
$text = 'Man, I shot this f*ck, damn sh/t! fucking fu*ker sh!t f*cking sh\t ;)';
$matched = preg_match_all("/(".implode('|', $blocked).")/i", $text, $matches);
$filter = preg_replace("/(".implode('|', $blocked).")/i", 'beep', $text);
var_dump($filter);
var_dump($matches);
JSFiddle for working example.
Yes, you can match bad words (saving for later), replace them in the text and build the regex dynamically based on an array of bad words you're trying to filter (you might store it in DB, load from JSON, etc.). Here's the main portion of the working example:
var blocked = ['fuck','shit','damn','hell','ass'],
matchBlocked = new RegExp("("+blocked.join('|')+")", 'gi'),
text = $('.unfiltered').text(),
matched = text.match(matchBlocked),
filtered = text.replace(matchBlocked, 'beep');
Please see the JSFiddle link above for the full working example.
This question already has an answer here:
Closed 10 years ago.
Possible Duplicate:
Remove entire word if the word contains specific string
How I can remove an entire word that contains a word?
For example, 'releas' should delete released, releases releasing etc.
/* Read in from the file here, not in the function - you only need to read the file once */
$wordlist = array('release','announce');
/* Sample data */
$words = 'adobe releases releases Acrobat X';
foreach ($wordlist as $v)
$words = clean($v,$words);
function clean($wordlist,$value)
{
return preg_replace("/\b$wordlist\b/i", '***',trim($value));
}
echo 'Words: '.$words.PHP_EOL;
You can loop through your $wordlist
function clean($wordlist,$value)
{
foreach ($wordlist as $word) {
$value = preg_replace("/\b\w*$word\w*\b/i", '***', trim($value));
}
return $value;
}
and doing it in one replace
function clean($wordlist,$value)
{
$all_words = implode('|', $wordlist);
return preg_replace("/\b\w*(?:$all_words)\w*\b/i", '***', trim($value));
}
Update:
Looking through other answers and comments, it seems I haven't looked properly at the question. If $wordlist is not an array, you can just use #fthiella's answer.
I would use this REGEXP;
return preg_replace("/\w*$wordlist\w*/i", '***', trim($value));
Applyed to your code, it would be:
foreach ($wordlist as $v)
$words = clean($v, $words);
function clean($word, $value) {
return preg_replace("/\w*$word\w*/i", '***',trim($value));
}
(notice that I renamed $wordlist to $word to make things clearer, since $wordlist is also the name of the array)
try it this way
$_words = implode( '|', $wordlist );
return preg_replace( "/\b\w*{$_words}\w*\b/i", "***", trim( $value ) );
or better
$_words = array();
foreach ( $wordlist as $word ) {
$_words[] = '/\b\w*' . preg_quote( $word ) . '\w*\b/i';
}
return preg_replace( $_words, '***', trim( $value ) );
the second way avoids problems with regex, if some reserved chars appear inside the words.
I need some help with twitter hashtag, I need to extract a certain hashtag as string variable in PHP.
Until now I have this
$hash = preg_replace ("/#(\\w+)/", "#$1", $tweet_text);
but this just transforms hashtag_string into link
Use preg_match() to identify the hash and capture it to a variable, like so:
$string = 'Tweet #hashtag';
preg_match("/#(\\w+)/", $string, $matches);
$hash = $matches[1];
var_dump( $hash); // Outputs 'hashtag'
Demo
I think this function will help you:
echo get_hashtags($string);
function get_hashtags($string, $str = 1) {
preg_match_all('/#(\w+)/',$string,$matches);
$i = 0;
if ($str) {
foreach ($matches[1] as $match) {
$count = count($matches[1]);
$keywords .= "$match";
$i++;
if ($count > $i) $keywords .= ", ";
}
} else {
foreach ($matches[1] as $match) {
$keyword[] = $match;
}
$keywords = $keyword;
}
return $keywords;
}
As i understand you are saying that
in text/pargraph/post you want to show tag with hash sign(#) like this:- #tag
and in url you want to remove # sign because the string after # is not sended to server in request so i have edited your code and try out this:-
$string="www.funnenjoy.com is best #SocialNetworking #website";
$text=preg_replace('/#(\\w+)/','<a href=/hash/$1>$0</a>',$string);
echo $text; // output will be www.funnenjoy.com is best <a href=search/SocialNetworking>#SocialNetworking</a> <a href=/search/website>#website</a>
Extract multiple hashtag to array
$body = 'My #name is #Eminem, I am rap #god, #Yoyoya check it #out';
$hashtag_set = [];
$array = explode('#', $body);
foreach ($array as $key => $row) {
$hashtag = [];
if (!empty($row)) {
$hashtag = explode(' ', $row);
$hashtag_set[] = '#' . $hashtag[0];
}
}
print_r($hashtag_set);
You can use preg_match_all() PHP function
preg_match_all('/(?<!\w)#\w+/', $description, $allMatches);
will give you only hastag array
preg_match_all('/#(\w+)/', $description, $allMatches);
will give you hastag and without hastag array
print_r($allMatches)
You can extract a value in a string with preg_match function
preg_match("/#(\w+)/", $tweet_text, $matches);
$hash = $matches[1];
preg_match will store matching results in an array. You should take a look at the doc to see how to play with it.
Here's a non Regex way to do it:
<?php
$tweet = "Foo bar #hashTag hello world";
$hashPos = strpos($tweet,'#');
$hashTag = '';
while ($tweet[$hashPos] !== ' ') {
$hashTag .= $tweet[$hashPos++];
}
echo $hashTag;
Demo
Note: This will only pickup the first hashtag in the tweet.
If I have a string that contains a url (for examples sake, we'll call it $url) such as;
$url = "Here is a funny site http://www.tunyurl.com/34934";
How do i remove the URL from the string?
Difficulty is, urls might also show up without the http://, such as ;
$url = "Here is another funny site www.tinyurl.com/55555";
There is no HTML present. How would i start a search if http or www exists, then remove the text/numbers/symbols until the first space?
I re-read the question, here is a function that would work as intended:
function cleaner($url) {
$U = explode(' ',$url);
$W =array();
foreach ($U as $k => $u) {
if (stristr($u,'http') || (count(explode('.',$u)) > 1)) {
unset($U[$k]);
return cleaner( implode(' ',$U));
}
}
return implode(' ',$U);
}
$url = "Here is another funny site www.tinyurl.com/55555 and http://www.tinyurl.com/55555 and img.hostingsite.com/badpic.jpg";
echo "Cleaned: " . cleaner($url);
Edit #2/#3 (I must be bored). Here is a version that verifies there is a TLD within the URL:
function containsTLD($string) {
preg_match(
"/(AC($|\/)|\.AD($|\/)|\.AE($|\/)|\.AERO($|\/)|\.AF($|\/)|\.AG($|\/)|\.AI($|\/)|\.AL($|\/)|\.AM($|\/)|\.AN($|\/)|\.AO($|\/)|\.AQ($|\/)|\.AR($|\/)|\.ARPA($|\/)|\.AS($|\/)|\.ASIA($|\/)|\.AT($|\/)|\.AU($|\/)|\.AW($|\/)|\.AX($|\/)|\.AZ($|\/)|\.BA($|\/)|\.BB($|\/)|\.BD($|\/)|\.BE($|\/)|\.BF($|\/)|\.BG($|\/)|\.BH($|\/)|\.BI($|\/)|\.BIZ($|\/)|\.BJ($|\/)|\.BM($|\/)|\.BN($|\/)|\.BO($|\/)|\.BR($|\/)|\.BS($|\/)|\.BT($|\/)|\.BV($|\/)|\.BW($|\/)|\.BY($|\/)|\.BZ($|\/)|\.CA($|\/)|\.CAT($|\/)|\.CC($|\/)|\.CD($|\/)|\.CF($|\/)|\.CG($|\/)|\.CH($|\/)|\.CI($|\/)|\.CK($|\/)|\.CL($|\/)|\.CM($|\/)|\.CN($|\/)|\.CO($|\/)|\.COM($|\/)|\.COOP($|\/)|\.CR($|\/)|\.CU($|\/)|\.CV($|\/)|\.CX($|\/)|\.CY($|\/)|\.CZ($|\/)|\.DE($|\/)|\.DJ($|\/)|\.DK($|\/)|\.DM($|\/)|\.DO($|\/)|\.DZ($|\/)|\.EC($|\/)|\.EDU($|\/)|\.EE($|\/)|\.EG($|\/)|\.ER($|\/)|\.ES($|\/)|\.ET($|\/)|\.EU($|\/)|\.FI($|\/)|\.FJ($|\/)|\.FK($|\/)|\.FM($|\/)|\.FO($|\/)|\.FR($|\/)|\.GA($|\/)|\.GB($|\/)|\.GD($|\/)|\.GE($|\/)|\.GF($|\/)|\.GG($|\/)|\.GH($|\/)|\.GI($|\/)|\.GL($|\/)|\.GM($|\/)|\.GN($|\/)|\.GOV($|\/)|\.GP($|\/)|\.GQ($|\/)|\.GR($|\/)|\.GS($|\/)|\.GT($|\/)|\.GU($|\/)|\.GW($|\/)|\.GY($|\/)|\.HK($|\/)|\.HM($|\/)|\.HN($|\/)|\.HR($|\/)|\.HT($|\/)|\.HU($|\/)|\.ID($|\/)|\.IE($|\/)|\.IL($|\/)|\.IM($|\/)|\.IN($|\/)|\.INFO($|\/)|\.INT($|\/)|\.IO($|\/)|\.IQ($|\/)|\.IR($|\/)|\.IS($|\/)|\.IT($|\/)|\.JE($|\/)|\.JM($|\/)|\.JO($|\/)|\.JOBS($|\/)|\.JP($|\/)|\.KE($|\/)|\.KG($|\/)|\.KH($|\/)|\.KI($|\/)|\.KM($|\/)|\.KN($|\/)|\.KP($|\/)|\.KR($|\/)|\.KW($|\/)|\.KY($|\/)|\.KZ($|\/)|\.LA($|\/)|\.LB($|\/)|\.LC($|\/)|\.LI($|\/)|\.LK($|\/)|\.LR($|\/)|\.LS($|\/)|\.LT($|\/)|\.LU($|\/)|\.LV($|\/)|\.LY($|\/)|\.MA($|\/)|\.MC($|\/)|\.MD($|\/)|\.ME($|\/)|\.MG($|\/)|\.MH($|\/)|\.MIL($|\/)|\.MK($|\/)|\.ML($|\/)|\.MM($|\/)|\.MN($|\/)|\.MO($|\/)|\.MOBI($|\/)|\.MP($|\/)|\.MQ($|\/)|\.MR($|\/)|\.MS($|\/)|\.MT($|\/)|\.MU($|\/)|\.MUSEUM($|\/)|\.MV($|\/)|\.MW($|\/)|\.MX($|\/)|\.MY($|\/)|\.MZ($|\/)|\.NA($|\/)|\.NAME($|\/)|\.NC($|\/)|\.NE($|\/)|\.NET($|\/)|\.NF($|\/)|\.NG($|\/)|\.NI($|\/)|\.NL($|\/)|\.NO($|\/)|\.NP($|\/)|\.NR($|\/)|\.NU($|\/)|\.NZ($|\/)|\.OM($|\/)|\.ORG($|\/)|\.PA($|\/)|\.PE($|\/)|\.PF($|\/)|\.PG($|\/)|\.PH($|\/)|\.PK($|\/)|\.PL($|\/)|\.PM($|\/)|\.PN($|\/)|\.PR($|\/)|\.PRO($|\/)|\.PS($|\/)|\.PT($|\/)|\.PW($|\/)|\.PY($|\/)|\.QA($|\/)|\.RE($|\/)|\.RO($|\/)|\.RS($|\/)|\.RU($|\/)|\.RW($|\/)|\.SA($|\/)|\.SB($|\/)|\.SC($|\/)|\.SD($|\/)|\.SE($|\/)|\.SG($|\/)|\.SH($|\/)|\.SI($|\/)|\.SJ($|\/)|\.SK($|\/)|\.SL($|\/)|\.SM($|\/)|\.SN($|\/)|\.SO($|\/)|\.SR($|\/)|\.ST($|\/)|\.SU($|\/)|\.SV($|\/)|\.SY($|\/)|\.SZ($|\/)|\.TC($|\/)|\.TD($|\/)|\.TEL($|\/)|\.TF($|\/)|\.TG($|\/)|\.TH($|\/)|\.TJ($|\/)|\.TK($|\/)|\.TL($|\/)|\.TM($|\/)|\.TN($|\/)|\.TO($|\/)|\.TP($|\/)|\.TR($|\/)|\.TRAVEL($|\/)|\.TT($|\/)|\.TV($|\/)|\.TW($|\/)|\.TZ($|\/)|\.UA($|\/)|\.UG($|\/)|\.UK($|\/)|\.US($|\/)|\.UY($|\/)|\.UZ($|\/)|\.VA($|\/)|\.VC($|\/)|\.VE($|\/)|\.VG($|\/)|\.VI($|\/)|\.VN($|\/)|\.VU($|\/)|\.WF($|\/)|\.WS($|\/)|\.XN--0ZWM56D($|\/)|\.XN--11B5BS3A9AJ6G($|\/)|\.XN--80AKHBYKNJ4F($|\/)|\.XN--9T4B11YI5A($|\/)|\.XN--DEBA0AD($|\/)|\.XN--G6W251D($|\/)|\.XN--HGBK6AJ7F53BBA($|\/)|\.XN--HLCJ6AYA9ESC7A($|\/)|\.XN--JXALPDLP($|\/)|\.XN--KGBECHTV($|\/)|\.XN--ZCKZAH($|\/)|\.YE($|\/)|\.YT($|\/)|\.YU($|\/)|\.ZA($|\/)|\.ZM($|\/)|\.ZW)/i",
$string,
$M);
$has_tld = (count($M) > 0) ? true : false;
return $has_tld;
}
function cleaner($url) {
$U = explode(' ',$url);
$W =array();
foreach ($U as $k => $u) {
if (stristr($u,".")) { //only preg_match if there is a dot
if (containsTLD($u) === true) {
unset($U[$k]);
return cleaner( implode(' ',$U));
}
}
}
return implode(' ',$U);
}
$url = "Here is another funny site badurl.badone somesite.ca/worse.jpg but this badsite.com www.tinyurl.com/55555 and http://www.tinyurl.com/55555 and img.hostingsite.com/badpic.jpg";
echo "Cleaned: " . cleaner($url);
returns:
Cleaned: Here is another funny site badurl.badone but this and and
$string = preg_replace('/\b(https?|ftp|file):\/\/[-A-Z0-9+&##\/%?=~_|$!:,.;]*[A-Z0-9+&##\/%=~_|$]/i', '', $string);
Parsing text for URLs is hard and looking for pre-existing, heavily tested code that already does this for you would be better than writing your own code and missing edge cases. For example, I would take a look at the process in Django's urlize, which wraps URLs in anchors. You could port it over to PHP, and--instead of wrapping URLs in an anchor--just delete them from the text.
thanks mike,
update a bit, it return notice error,
'/\b(https?|ftp|file):\/\/[-A-Z0-9+&##\/%?=~_|$!:,.;]*[A-Z0-9+&##\/%=~_|$]/i'
$string = preg_replace('/\b(https?|ftp|file):\/\/[-A-Z0-9+&##\/%?=~_|$!:,.;]*[A-Z0-9+&##\/%=~_|$]/i', '', $string);
$url = "Here is a funny site http://www.tunyurl.com/34934";
$replace = 'http www .com .org .net';
$with = '';
$clean_url = clean($url,$replace,$with);
echo $clean_url;
function clean($url,$replace,$with) {
$replace = explode(" ",$replace);
$new_string = '';
$check = explode(" ",$url);
foreach($check AS $key => $value) {
foreach($replace AS $key2 => $value2 ) {
if (-1 < strpos( strtolower($value), strtolower($value2) ) ) {
$value = $with;
break;
}
}
$new_string .= " ".$value;
}
return $new_string;
}
You would need to write a regular expression to extract out the urls.