How to Extract CSS Class Names Containing \'postclass\' with PHP?

CSS File Parsing with PHP

Parsing CSS files in PHP allows you to extract and manipulate their contents programatically. One common use case is finding and extracting specific CSS class names.

Solution

To parse a CSS file and extract class names containing "postclass," you can use regular expressions and PHP functions:

<code class="php">function parseCSS($file) {
    $css = file_get_contents($file);
    preg_match_all('/#(\w+\.?postclass.*)\s?\{.*?}/', $css, $matches);
    return $matches[1];
}</code>

Usage

To use this function:

<code class="php">$cssFile = 'cssfile.css';
$classList = parseCSS($cssFile);
print_r($classList);</code>

Output

Array
(
    [0] => #content.postclass-subcontent
    [1] => #content2.postclass-subcontent2
)

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