How do i extract all CSS from a webpage?
How can I retrieve all CSS from a webpage URL using PHP?
I have a webpage URL or HTML file, and I want to extract all the external CSS from that webpage. Is it possible with PHP?
Yes, it is possible to extract external CSS from a webpage using PHP. You can achieve this by parsing the HTML content of the webpage and extracting the <link> tags that reference external CSS files. Then you can retrieve the content of those CSS files and store or manipulate them as needed. Here's a basic example of how you can do this:
<?php $url = 'https://blog.buggerspot.com/'; $parsed_url = parse_url($url); if(isset($parsed_url['scheme']) && isset($parsed_url['host'])) { $dom = new DOMDocument(); $html = file_get_contents($url); @$dom->loadHTML($html); $links = $dom->getElementsByTagName('link'); $domainUrl = $parsed_url['scheme'] . '://' . $parsed_url['host']; $cssLinks = array(); foreach ($links as $link) { if ($link->getAttribute('rel') == 'stylesheet') { $externalCss = $link->getAttribute('href'); $css_parsed_url = parse_url($externalCss); if (!isset($css_parsed_url['host'])) { $externalCss = "$domainUrl/$externalCss"; //add abs } $cssLinks[] = $externalCss; } } $css = ""; foreach ($cssLinks as $cssLink) { $css .= file_get_contents($cssLink); } echo $css; } else { echo "Please enter a valid website URL, such as: https://blog.buggerspot.com/"; }This code retrieves the HTML content of the webpage, parses it using DOMDocument, and then iterates through all <link> tags with the rel="stylesheet" attribute. It checks if the href attribute of each <link> tag (indicating an external CSS file), retrieves the content of those CSS files, and stores them in an array. Finally, it outputs the content of each external CSS file.