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<?php
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/**
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* moves all css definitions from <body> into <head> section
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* @param string $content
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* @return string
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*/
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function doFilterCssToHead($sContent) {
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// move css definitions into head section
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$sPattern1 = '/(?:<body.*?)(<link[^>]*?\"text\/css\".*?\/>)/si';
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$sPattern2 = '/(?:<body.*?)(<style[^>]*?\"text\/css\"[^>]*?>.*?<\/style>)/si';
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$aInsert = array();
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while(preg_match($sPattern1, $sContent, $aMatches)) {
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$aInsert[] = $aMatches[1];
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$sContent = str_replace($aMatches[1], '', $sContent);
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}
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while(preg_match($sPattern2, $sContent, $aMatches)) {
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$aInsert[] = $aMatches[1];
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$sContent = str_replace($aMatches[1], '', $sContent);
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}
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$aInsert = array_unique($aInsert);
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if(sizeof($aInsert) > 0) {
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$sInsert = "\n".implode("\n", $aInsert)."\n</head>\n<body";
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$sContent = preg_replace('/<\/head>.*?<body/si', $sInsert, $sContent, 1);
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}
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return $sContent;
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}
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