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<?php function get_tumbail($imgSrc,$placeholder_image){ $imgPattern = "/(http\:\/\/ww\d+\.sinaimg\.cn\/)(\w+)(\/\S+\.(jpg|gif))/i"; $matches = null; $result = preg_match($imgPattern, $imgSrc, $matches); if (!$result) { return $placeholder_image; } return $matches[1] . 'thumbnail' . $matches[3]; } $placeholder_image = 'images/transparent.gif'; $imgStr = '<img src="http://ww2.sinaimg.cn/bmiddle/a3d444e3jw1ez79amvdi1j20l50s8gpl.jpg"/>'; $imgStr = preg_replace_callback('#<img([^>]+?)src=[\'"]?([^\'"\s>]+)[\'"]?([^>]*)>#',function($match) { var_dump($match); global $placeholder_image; return sprintf('<img'.$match[1].'src="%s" data-original="'.$match[2].'" class="lazy"'.$match[3].'><noscript><img'.$match[1].'src="'.$match[2].'"'.$match[3].'></noscript>', get_tumbail($match[2],$placeholder_image)); },$imgStr); var_dump($imgStr); $imgStr = preg_replace('#<img([^>]+?)src=[\'"]?([^\'"\s>]+)[\'"]?([^>]*)>#', sprintf('<img${1}src="%s" data-original="${2}" class="lazy"${3}><noscript><img${1}src="${2}"${3}></noscript>', get_tumbail(${2},$placeholder_image)), $imgStr); var_dump($imgStr);
Output for git.master, git.master_jit, rfc.property-hooks
array(4) { [0]=> string(79) "<img src="http://ww2.sinaimg.cn/bmiddle/a3d444e3jw1ez79amvdi1j20l50s8gpl.jpg"/>" [1]=> string(1) " " [2]=> string(66) "http://ww2.sinaimg.cn/bmiddle/a3d444e3jw1ez79amvdi1j20l50s8gpl.jpg" [3]=> string(1) "/" } string(277) "<img src="http://ww2.sinaimg.cn/thumbnail/a3d444e3jw1ez79amvdi1j20l50s8gpl.jpg" data-original="http://ww2.sinaimg.cn/bmiddle/a3d444e3jw1ez79amvdi1j20l50s8gpl.jpg" class="lazy"/><noscript><img src="http://ww2.sinaimg.cn/bmiddle/a3d444e3jw1ez79amvdi1j20l50s8gpl.jpg"/></noscript>" Warning: Undefined variable $2 in /in/C1HOs on line 19 Deprecated: preg_match(): Passing null to parameter #2 ($subject) of type string is deprecated in /in/C1HOs on line 5 string(679) "<img src="images/transparent.gif" data-original="http://ww2.sinaimg.cn/thumbnail/a3d444e3jw1ez79amvdi1j20l50s8gpl.jpg" class="lazy" data-original="http://ww2.sinaimg.cn/bmiddle/a3d444e3jw1ez79amvdi1j20l50s8gpl.jpg" class="lazy"/><noscript><img src="http://ww2.sinaimg.cn/thumbnail/a3d444e3jw1ez79amvdi1j20l50s8gpl.jpg" data-original="http://ww2.sinaimg.cn/bmiddle/a3d444e3jw1ez79amvdi1j20l50s8gpl.jpg" class="lazy"/></noscript><noscript><img src="images/transparent.gif" data-original="http://ww2.sinaimg.cn/bmiddle/a3d444e3jw1ez79amvdi1j20l50s8gpl.jpg" class="lazy"/><noscript><img src="http://ww2.sinaimg.cn/bmiddle/a3d444e3jw1ez79amvdi1j20l50s8gpl.jpg"/></noscript></noscript>"

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