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Convert HTML to AMP
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| <?php | |
| class AMP { | |
| private $html; | |
| /** | |
| * HtmlToAmp constructor. | |
| */ | |
| public function __construct($htmlContent) { | |
| $this->html = $htmlContent; | |
| } | |
| public function convertedHTML() { | |
| echo $this->ampify(); | |
| } | |
| /** | |
| * | |
| */ | |
| private function replaceTagsMain() { | |
| // Replacing all img, audio, iframe, video elements to amp custom elements. | |
| $this->html = str_ireplace( | |
| ['<html', 'https:', 'http:', '<img', '<video', '/video>', '<audio', '/audio>'], ['<html amp', '', '', '<amp-img', '<amp-video', '/amp-video>', '<amp-audio', '/amp-audio>'], $this->html | |
| ); | |
| } | |
| private function replaceHeaderMetas() { | |
| // Content to replace header. | |
| $this->html = preg_replace('/<(meta|link) ((charset|property|http-equiv)=|(name|rel)=[\\"](viewport|canonical)[\\"])(.*?)>/', '', $this->html); | |
| } | |
| private function replaceHeaderMain() { | |
| // Content to replace header. | |
| $this->html = preg_replace( | |
| '/<head\/?>(.*)<\/head>/s', '<head>' | |
| . '<meta charset="utf-8">' | |
| . '<script async src="https://cdn.ampproject.org/v0.js"></script>' | |
| . '$1' | |
| . '</head>', $this->html); | |
| } | |
| private function replaceHeaderTags() { | |
| // Content to replace header. | |
| $this->html = preg_replace( | |
| '/<head\/?>(.*)<\/head>/s', '<head>' | |
| . '$1' | |
| . '<link rel="canonical" href="$SOME_URL" />' | |
| . '<meta name="viewport" content="width=device-width,minimum-scale=1">' | |
| . '</head>', $this->html); | |
| } | |
| private function replaceHeaderStyles() { | |
| // Content to replace header. | |
| $this->html = preg_replace( | |
| '/<head\/?>(.*?)<\/head>/s', '<head>' | |
| . '$1' | |
| . '<style amp-boilerplate>body{-webkit-animation:-amp-start 8s steps(1,end) 0s 1 normal both;-moz-animation:-amp-start 8s steps(1,end) 0s 1 normal both;-ms-animation:-amp-start 8s steps(1,end) 0s 1 normal both;animation:-amp-start 8s steps(1,end) 0s 1 normal both}@-webkit-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-moz-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-ms-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-o-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}</style>' | |
| . '<noscript><style amp-boilerplate>body{-webkit-animation:none;-moz-animation:none;-ms-animation:none;animation:none}</style></noscript>' | |
| . '</head>', $this->html); | |
| } | |
| private function replaceBodyContent() { | |
| // Adding amp-img closing tag. | |
| $this->html = preg_replace('/<amp-img(.*?)\/?>/', '<amp-img layout="responsive"$1></amp-img>', $this->html); | |
| } | |
| protected function ampify() { | |
| // Content to replace header. | |
| $this->replaceHeaderMetas(); | |
| // Replacing all img, audio, iframe, video elements to amp custom elements. | |
| $this->replaceTagsMain(); | |
| // Content to replace header. | |
| $this->replaceHeaderMain(); | |
| // Content to replace header. | |
| $this->replaceHeaderTags(); | |
| // Content to replace header. | |
| $this->replaceHeaderStyles(); | |
| // Adding amp-img closing tag. | |
| $this->replaceBodyContent(); | |
| return $this->html; | |
| } | |
| } | |
| $html = file_get_contents('http://www.contentsuit.com'); | |
| $amp = new AMP($html); | |
| $amp->convertedHTML(); |
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