marcus-at-localhost · November 12, 2020 06:26
diff --git a/move-inline-scripts.php b/move-inline-scripts.php
 <?php
 // test code
 // http://ideone.com/pDCedR

 $html = <<<HTML
 <html>
 	<head>
 	</head>
 	<body>
 		<script class="keep">
 		  // will noit be moved
 			console.log('I stay');
 		</script>
 		<script>
 		  // will be moved at the end of the document
 			$('h1').addClass('header');
 		</script>
 		<h1>DOMDocument</h1>
 		<p>Text<p>
 		<script src="jquery.js"></script>
 		<!-- inline php should appear below -->
 	</body>
 </html>
 HTML;

 echo move_script($html);

 function move_script($html)
 {
 	// in case we have some mangled special chars in the output,
 	// use this. <https://davidwalsh.name/domdocument-utf8-problem>
 	$html = mb_convert_encoding($html, 'HTML-ENTITIES', 'UTF-8');
 	
 	$dom = new DOMDocument();
 	$dom->recover = true;
 	//$dom->substituteEntities = true;
 	$dom->formatOutput = true;
 	$dom->preserveWhiteSpace = true;
 	
 	// set error level
 	// uncomment to suspress warnings that happen with embedded SVG, duplicate ids
 	// and raw entities like & instead of &amp;
 	//$internalErrors = libxml_use_internal_errors(true);
 	
 	// load HTML 
 	// LIBXML_HTML_NODEFDTD 
 	// keeps linebreaks after <script> tags being rearranged
 	// http://stackoverflow.com/a/32028596/814031
 	// http://stackoverflow.com/a/29499398/814031
 	$dom->loadHTML($html, LIBXML_HTML_NODEFDTD);
 	
 	// collect the suspressed warnings/errors and print them out
 	//$errors = libxml_get_errors();
 	//var_dump($errors);
 	
 	// Restore error level
 	//libxml_use_internal_errors($internalErrors);

 	$xpath = new DOMXPath($dom);
 	
  // grab all inline script tags in <body> that not referencing a file or have the class="keep" attached
 	$script_tags = $xpath->query('//body//script[not(@src)][not(@class="keep")]');

 	$mainBody = @$dom->getElementsByTagName('body')->item(0);
 	foreach ($script_tags as $tag) {
 	    $mainBody->appendChild($tag->cloneNode(true));
 	    $tag->parentNode->removeChild($tag);
 	}

 	return $dom->saveHTML();
 }
	<?php
	// test code
	// http://ideone.com/pDCedR

	$html = <<<HTML
	<html>
	<head>
	</head>
	<body>
	<script class="keep">
	// will noit be moved
	console.log('I stay');
	</script>
	<script>
	// will be moved at the end of the document
	$('h1').addClass('header');
	</script>
	<h1>DOMDocument</h1>
	<p>Text<p>
	<script src="jquery.js"></script>
	<!-- inline php should appear below -->
	</body>
	</html>
	HTML;

	echo move_script($html);

	function move_script($html)
	{
	// in case we have some mangled special chars in the output,
	// use this. <https://davidwalsh.name/domdocument-utf8-problem>
	$html = mb_convert_encoding($html, 'HTML-ENTITIES', 'UTF-8');

	$dom = new DOMDocument();
	$dom->recover = true;
	//$dom->substituteEntities = true;
	$dom->formatOutput = true;
	$dom->preserveWhiteSpace = true;

	// set error level
	// uncomment to suspress warnings that happen with embedded SVG, duplicate ids
	// and raw entities like & instead of &
	//$internalErrors = libxml_use_internal_errors(true);

	// load HTML
	// LIBXML_HTML_NODEFDTD
	// keeps linebreaks after <script> tags being rearranged
	// http://stackoverflow.com/a/32028596/814031
	// http://stackoverflow.com/a/29499398/814031
	$dom->loadHTML($html, LIBXML_HTML_NODEFDTD);

	// collect the suspressed warnings/errors and print them out
	//$errors = libxml_get_errors();
	//var_dump($errors);

	// Restore error level
	//libxml_use_internal_errors($internalErrors);

	$xpath = new DOMXPath($dom);

	// grab all inline script tags in <body> that not referencing a file or have the class="keep" attached
	$script_tags = $xpath->query('//body//script[not(@src)][not(@class="keep")]');

	$mainBody = @$dom->getElementsByTagName('body')->item(0);
	foreach ($script_tags as $tag) {
	$mainBody->appendChild($tag->cloneNode(true));
	$tag->parentNode->removeChild($tag);
	}

	return $dom->saveHTML();
	}