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How to Extract Classes Containing 'postclass' from a CSS File with PHP?
How to Extract Classes Containing 'postclass' from a CSS File with PHP?
Nov 13, 2024 pm 03:42 PM
Parse a CSS File with PHP: Selectively Extract Classes with "postclass"
Question:
You seek a method to parse a CSS file in PHP and extract each class name containing "postclass" in its name. The desired output is an array of these class names.
Solution:
Using Regular Expressions:
The following PHP function accomplishes the task using regular expressions:
function parse($file){
$css = file_get_contents($file);
preg_match_all( '/(?ims)([a-z0-9\s\.\:#_\-@,]+)\{([^\}]*)\}/', $css, $arr);
$result = array();
foreach ($arr[0] as $i => $x){
$selector = trim($arr[1][$i]);
if (strpos($selector, 'postclass') !== false) {
$result[] = $selector;
}
}
return $result;
}
Usage:
$css = parse('css/'.$user['blog'].'.php');
print_r($css); // Output: ["#content.postclass-subcontent", "#content2.postclass-subcontent2"]
This function parses the CSS file and stores the matching class names in the $result array. It then returns the array.
Using Ajax and jQuery:
An alternative approach uses Ajax and jQuery to fetch the CSS file and extract the required classes:
$(function () {
$.get('main.css', function (data) {
data = data.match(/(#[a-z0-9]*?\ .?postclass.*?)\s?\{/g);
if (data) {
$.each(data, function (index, value) {
value = value.substring(0, value.length - 2);
$(value.split(' .')[0]).wrapInner('<div class="' + value.split('.')[1] + '" />');
});
}
});
});
This code fetches the CSS file, extracts the class names containing "postclass," and wraps matching elements with a DIV based on the CSS class.
The above is the detailed content of How to Extract Classes Containing 'postclass' from a CSS File with PHP?. For more information, please follow other related articles on the PHP Chinese website!
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