regex - php - need a regular expression to find and append website url to img src -
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- how parse , process html/xml in php? 27 answers
i have got search within html message image tags , append website url image url tag found using regular expression
e.g if image src in html message
/images/my_image.jpg i need append url , make this:
http://mywebsite.com/page/images/my_image.jpg
you should use html parsing solution instead of regex, avoid surprises badly formatted code. this:
// example source $source = <<<eos <html><body> images have host appended: <img src="foo.png" /> , <img src="images/en/87a%20-zzq.png" /> image left is: <img src="https://www.gravatar.com/avatar/1b1f8ad9a64564a9096056e33a4805bf?s=32&d=identicon&r=pg" /> </body></html> eos; // create dom document , read html $dom = new domdocument(); $dom->loadhtml($source); // use xpath query find 'img' tags $xpath = new domxpath($dom); $images = $xpath->query('//img'); // loop through tags foreach ($images $image) { // grab 'src' attribute $src = $image->getattribute('src'); // if attribute not contain scheme (e.g. http(s)), // append url scheme , host if ($src && (!parse_url($src, php_url_scheme))) { $image->setattribute('src', "http://mywebsite.com/page/" . $src); } } // write output $dom->formatoutput = true; echo $dom->savehtml(); output:
<!doctype html public "-//w3c//dtd html 4.0 transitional//en" "http://www.w3.org/tr/rec-html40/loose.dtd"> <html><body> images have host appended: <img src="http://mywebsite.com/page/foo.png"> , <img src="http://mywebsite.com/page/images/en/87a%20-zzq.png"> image left is: <img src="https://www.gravatar.com/avatar/1b1f8ad9a64564a9096056e33a4805bf?s=32&d=identicon&r=pg"> </body></html>
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