Reading information from CSS in PHP - php

Question

I am creating a website where users shall be able to upload plugins with a file called 'info.css'. I want my PHP-file to be able to read out information from this file, for example the ID.
The 'info.css' file will contain something similar to:
/*
ID: test-preset;
Name: Test Preset;
*/
I want the ID and Name to get into separate strings, without the 'id:' or 'name:'.
Please write any solution you may will work. I have tried with following (but have gotten stuck on the way. Please note that the information in the 'info.css' file may appear in a different order, so for example it should work if the 'Name:' comes first.
$preset_inf = strtolower($preset_inf);
$preset_inf = explode('*/', $preset_inf);
$preset_inf = str_replace('/*', '', $preset_inf[0]);
$preset_inf = str_replace(' ', '', $preset_inf);
$preset_inf = explode(';', $preset_inf);

Answer 1

Regex?
$str = "/*
ID: test-preset;
Name: Test Preset;
*/";
preg_match_all("/(ID|Name):\s*(.*?)\;/s", $str, $m);
var_dump($m);
This will produce:
array(3) {
[0]=>
string(35) "ID: test-preset;
Name: Test Preset;"
[1]=>
string(11) "test-preset"
[2]=>
string(11) "Test Preset"
}
Matches anything between ID/Name and ;.
Edit noticed it could be the other way around too. Edited the code.
The output array will look slightly different but the part you want is in $m[2] array.
https://3v4l.org/iusmV

Answer 2

You can use regex to retrieve each variable, so:
preg_match( '/Name: (.*?);/', $css_file, $match );
$name = $match[1];
echo $name;
preg_match( '/ID: (.*?);/', $css_file, $match );
$id = $match[1];
echo $id;
Would return
Test Preset
test-preset

Answer 3

In case you need a more general solution, here is a regex that will parse a header with an arbitrary number of options along with their names:
$string = '/*
ID: test-preset;
Name: Test Preset;
*/';
$pattern = '/^(?!\/\*)([^:]+):([^:]+);$/mU';
preg_match_all($pattern, $string, $matches, PREG_SET_ORDER, 0);
$results = array();
foreach($matches as $match){
$results[$match[1]] = $match[2];
}
$results now contains an array with this structure:
[
"ID" => "test-preset",
"Name" => "Test Preset"
]
This has the benefit of being able to handle any number of "Header arguments".

Answer 4

Scalable solution.
$presetInfoItem = [];
$presetInfo = [];
$presetFile = "/*
ID: test-preset;
Name: Test Preset;
*/";
$fields = ['ID', 'Name'];
foreach ($fields as $field) {
$matchesCount = preg_match_all("#$field:(?'$field'[\w-\s]*);#", $presetFile, $presetInfoItem);
if ($matchesCount === 0 || $matchesCount === false) {
$presetInfo[$field] = "";
} else {
$presetInfo[$field] = trim($presetInfoItem[$field][0]);
}
}
var_export($presetInfo);

Answer 5

For your pleasure:
<?php
$css = '/*
ID: test-preset;
Name: Test Preset;
*/';
$css = str_replace("*/", "", $css);
$css = str_replace("/*", "", $css);
$css = str_replace(";", "", $css);
$css = trim($css);
$lines = explode("\n", str_replace("\r", '', $css));
if(!empty($lines)) {
foreach($lines as $i => $line) {
$vals = explode(":", $line);
$key = $vals[0];
$value = $vals[1];
echo '<div><b>'.$key.'</b>: '.$value.'</div>';
}
}
?>
Result is:
ID: test-preset
Name: Test Preset
Regex is not needed :)