PHP easy-to-solve - php

<?
[...]
$line = fgets($file);
while(!feof($file)){
if(($line)!==('da7or')){
{
echo fgets($file)."<br />";
}
}}
[...]
?>
file is something like:
nick1
da7or
nick3
nick4
nick5
I don't want "da7or" to be displayed but it always removes nick from the 1st line of the file.

since you are calling twice fgets try somthing like:
[..]
while(!feof($file))
{
$line = trim(fgets($file));
if(($line)!==('da7or'))
{
echo $line ."<br />";
}
}
[..]
notice there's no fgets before the while

fgets() also returns linebreak characters. You'll have to do
if (trim($line) !== 'da7or')
to strip off those characters. Note that if any of your lines also START with whitespace characters, trim will also remove those as well.
Beyond that, your logic is flawed.
You fetch a line, compare is against da7or, then simply directly output every line AFTER this. Your loop should be:
while ($line = fgets($file)) {
if (trim($line) !== 'da7or') {
echo $line
}
}

Using a loop to read in a file line-wise is kinda stupid.
Because there is a function for that: file()
$names = file("names.txt", FILE_IGNORE_NEW_LINES);
$names = array_diff($names, array("da7or"));
And the simple array_diff removes the unwanted element from the list. Then just print out the rest.

You never update $line after the first time.
<?php
while (!feof($file) && $line = fgets($file))
{
if (trim($line) != 'da7or')
echo $line;
}

You have to choose, if you read the file line into $line you can't echo the fgets, you need to echo $line (and reload the $line variables with a fget)

Related

Get value from file - php

Let's say I have this in my text file:
Author:MJMZ
Author URL:http://abc.co
Version: 1.0
How can I get the string "MJMZ" if I look for the string "Author"?
I already tried the solution from another question (Php get value from text file) but with no success.
The problem may be because of the strpos function. In my case, the word "Author" got two. So the strpos function can't solve my problem.
Split each line at the : using explode, then check if the prefix matches what you're searching for:
$lines = file($filename, FILE_IGNORE_NEW_LINES);
foreach($lines as $line) {
list($prefix, $data) = explode(':', $line);
if (trim($prefix) == "Author") {
echo $data;
break;
}
}
Try the following:
$file_contents = file_get_contents('myfilename.ext');
preg_match('/^Author\s*\:\s*([^\r\n]+)/', $file_contents, $matches);
$code = isset($matches[1]) && !empty($matches[1]) ? $matches[1] : 'no-code-found';
echo $code;
Now the $matches variable should contains the MJMZ.
The above, will search for the first instance of the Author:CODE_HERE in your file, and will place the CODE_HERE in the $matches variable.
More specific, the regex. will search for a string that starts with the word Author followed with an optional space \s*, followed by a semicolon character \:, followed by an optional space \s*, followed by one or more characters that it is not a new line [^\r\n]+.
If your file will have dinamically added items, then you can sort it into array.
$content = file_get_contents("myfile.txt");
$line = explode("\n", $content);
$item = new Array();
foreach($line as $l){
$var = explode(":", $l);
$value = "";
for($i=1; $i<sizeof($var); $i++){
$value .= $var[$i];
}
$item[$var[0]] = $value;
}
// Now you can access every single item with his name:
print $item["Author"];
The for loop inside the foreach loop is needed, so you can have multiple ":" in your list. The program will separate name from value at the first ":"
First take lines from file, convert to array then call them by their keys.
$handle = fopen("file.txt", "r");
if ($handle) {
while (($line = fgets($handle)) !== false) {
$pieces = explode(":", $line);
$array[$pieces[0]] = $pieces[1];
}
} else {
// error opening the file.
}
fclose($handle);
echo $array['Author'];

Use php to compare the strings from a file,cannot get the correct answer

I use PHP to read a line from a txt.But when I echo them both,they are the same.But when I use "==" to compare, it's opposite
This is to write:
$content = $time."\r\n".$user."\r\n".$star."\r\n".$comment."\r\n"."======================\r\n";
$fp=fopen($row['comment'],'a');
fwrite($fp,$content);
fclose($fp);
This is to read and compare:
$file = file($row['comment']);
foreach($file as &$line){
$file_arr[] = $line;
if($line == "======================"){
echo "123";
}
}
The result is that it cannot echo "123".
The whitespace is the problem - change the reader to be:-
$file = file($row['comment']);
foreach($file as &$line)
{
$file_arr[] = $line;
if(trim($line) == "======================"){
echo "123";
}
}
Non visible characters are driving you crazy? Trim newlines and carriage returns of both strings you are comparing. You can use md5 function to compare hashes of 2 strings to see if they are always different.

PHP Read a number from a txt file and make then calculations

I have a file which has only one line, with a number from 1 to 40, and I have the following code:
$file_line = file('../countersaver.txt');
foreach ($file_line as $line) {
$line_result = $line;
}
echo $line;
I have to calculate the result of $line - 1 and echo that result.
But when i do:
$line = $line - 1;
Then it shows $line - 1 and doesn't actually do the calculation.
Your code is weak to changes of the file contents. If someone adds a few blank lines, for example, your code won't work. Try this out instead:
$number = trim(file_get_contents('../countersaver.txt'));
echo $number - 1;
Try replacing
$line = $line - 1;
echo $line
with
$line = ($line -1);
echo $line
This will print 19 instead of 20-1.
I don't see an approved answer here but for anyone looking at this post, if you have a variable that you want PHP to read as a number you can use intval() function. Details covered here...
http://php.net/manual/en/function.intval.php
Try this:
$fin = #fopen("path to file", "r");
if ($fin) {
while (!feof($fin)) {
$buffer = fgets($fin);
}
fclose($fin);
}

PHP search text file line by line for two strings then output line

I am trying to search a text file for two values on a line. If both values are present I need to output the entire line. The values I am searching for may not be next to each other which is where I am getting stuck. I have the following code which works well but only for one search value:
<?php
$search = $_REQUEST["search"];
// Read from file
$lines = file('archive.txt');
foreach($lines as $line)
{
// Check if the line contains the string we're looking for, and print if it does
if(strpos($line, $search) !== false)
echo"<html><title>SEARCH RESULTS FOR: $search</title><font face='Arial'> $line <hr>";
}
?>
Any assistance much appreciated. Many thanks in advance.
Assuming the values you're searching for are separated by a space, and they will both always be present, explode should do the trick:
$search = explode(' ', $_REQUEST["search"]); // change ' ' to ',' if you separate the search terms with a comma, etc.
// Read from file
$lines = file('archive.txt');
foreach($lines as $line)
{
// Check if the line contains the string we're looking for, and print if it does
if(strpos($line, $search[0]) !== false && strpos($line, $search[1] !== false)) {
echo"<html><title>SEARCH RESULTS FOR: $search</title><font face='Arial'> $line <hr>";
}
}
I'll leave it up to you to add some validation to make sure there are always two elements in the $search array, etc.
I also corrected the HTML code. The script looks for two values, $search and $search2. It is using stristr(). For the case-sensitive version of stristr, refer to strstr(). The script will return all lines containing both $search and $search2.
<?php
$search = $_REQUEST["search"];
$search2 = $_REQUEST['search2'];
// Read from file
$lines = file('archive.txt');
echo"<html><head><title>SEARCH RESULTS FOR: $search</title></head><body>";
foreach($lines as $line)
{
// Check if the line contains the string we're looking for, and print if it does
if(stristr($line,$search) && stristr($line,$search2)) // case insensitive
echo "<font face='Arial'> $line </font><hr>";
}
?>
</body></html>
Just search for your other value also and use && to check for both.
<?php
$search1 = $_REQUEST["search1"];
$search2 = $_REQUEST["search2"];
// Read from file
$lines = file('archive.txt');
foreach($lines as $line)
{
// Check if the line contains the string we're looking for, and print if it does
if(strpos($line, $search1) !== false && strpos($line, $search2) !== false)
echo"<html><title>SEARCH RESULTS FOR: $search1 and $search2</title><font face='Arial'> $line <hr>";
}
?>
This worked for me. You may define what you like in searchthis aray and it will be displayed with whole line.
<?php
$searchthis = array('1','2','3');
$matches = array();
$handle = fopen("file_path", "r");
if ($handle)
{
while (!feof($handle))
{
$buffer = fgets($handle);
foreach ($searchthis as $param) {
if(strpos($buffer, $param) !== FALSE)
$matches[] = $buffer;
}}
fclose($handle);
}
foreach ($matches as $parts) {
echo $parts;
}
?>

Help with string parsing

I have a huge library file containing a word and it's synonyms, this is some words and their synonyms in the format of my library:
aantarrão|1
igrejeiro|igrejeiro|aantarrão|beato
aãsolar|1
desolar|desolar|aãsolar|afligir|arrasar|arruinar|consternar|despovoar|devastar|magoar
aba|11
amparo|amparo|aba|abrigo|achego|acostamento|adminículo|agasalho|ajuda|anteparo|apadrinhamento|apoio|arrimo|asilo|assistência|auxíjlio|auxílio|baluarte|bordão|broquel|coluna|conchego|defesa|égide|encosto|escora|esteio|favor|fulcro|muro|patrocínio|proteção|proteçâo|resguardo|socorro|sustentáculo|tutela|tutoria
apoio|apoio|aba|adesão|adminículo|amparo|aprovação|arrimo|assentimento|base|bordão|coluna|conchego|descanso|eixo|encosto|escora|espeque|fé|fulcro|proteçâo|proteção|refúgio|socorro|sustentáculo
beira|beira|aba|beirada|borda|bordo|cairel|encosta|extremidade|falda|iminência|margem|orla|ourela|proximidade|rai|riba|sopé|vertente
beirada|beirada|aba|beira|encosta|falda|margem|sopé|vertente
encosta|encosta|aba|beira|beirada|clivo|falda|lomba|sopé|subida|vertente
falda|falda|aba|beira|beirada|encosta|fralda|sopé|vertente
fralda|fralda|aba|falda|raiss|raiz|sopé
prestígio|prestígio|aba|auréola|autoridade|domínio|força|halo|importância|influência|preponderância|valia|valimento|valor
proteção|proteção|aba|abrigo|agasalho|ajuda|amparo|apoio|arrimo|asilo|auspiciar|auxílio|bafejo|capa|custódia|defesa|égide|escora|fautoria|favor|fomento|garantia|paládio|patrocínio|pistolão|quartel|refúgio|socorro|tutela|tutoria
sopé|sopé|aba|base|beira|beirada|encosta|falda|fralda|raiz|vertente
vertente|vertente|aba|beira|beirada|declive|encosta|falda|sopé
see aantarrão is a word and below it are the synonyms, I can't think of a way to get the word and the synonyms on an associative array, this is what I'm trying to do:
<?
$file = file('library.txt');
$array_sinonimos = array();
foreach($file as $k)
{
$explode = explode($k, "|");
if(is_int($explode[1]))
{
$word = $explode[0];
}
}
?>
nothing, lol, what can I do here ? loop lines until I find an empty line then try to get a new word with the explode ?, help !
Here's some code I cooked up that seems to work.
See the code in action here: http://codepad.org/TVpYgW91
See the code here
UPDATED to read line by line
<?php
$filepointer = fopen("library.txt", "rb");
$words = array();
while(!feof($filepointer)) {
$line = trim(fgets($filepointer));
$content = explode("|", $line);
if (count($content) == 0)
continue;
if (is_numeric(end($content))) {
$word = reset($content);
continue;
}
if (isset($words[$word]))
$words[$word] = array_merge($words[$word], $content);
else
$words[$word] = $content;
}
print_r($words);
So what's the strategy?
fix up the line endings
run through the file line by line
ignore empty lines (count($content))
split the line up on the pipes, if the line has a numerical value for the last value, then this becomes our word
we only get to the last step if none of the other traps got touched, because of the continue statements, so if it is then just split up the words by the pipe and add them to or create the array element.
Try this. I can't remember if array_merge() will work with a null, but the basic idea is that $word is the $key to the assoc array.
<?
$file = file('library.txt');
$array_sinonimos = array();
foreach($file as $k)
{
$explode = explode($k, "|");
if(is_int($explode[1]))
{
$word = $explode[0];
}
else if(!empty($explode))
{
$array_sinonimos[$word] = array_merge($synonyms[$word], $explode);
}
}
?>

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