PHP正则提取图片img标记中的任意属性

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/*PHP正则提取图片img标记中的任意属性*/ $str = '<center><img src="/uploads/images/20100516000.jpg" height="120" width="120"><br />PHP正则提取或更改图片img标记中的任意属性</center>'; //1、取整个图片代码 preg_match('/<\s*img\s+[^>]*?src\s*=\s*(\'|\")(.*?)\\1[^>]*?\/?\s*>/i',$str,$match); echo $match[0]; //2、取width preg_match('/<img.+(width=\"?\d*\"?).+>/i',$str,$match); echo $match[1]; //3、取height preg_match('/<img.+(height=\"?\d*\"?).+>/i',$str,$match); echo $match[1]; //4、取src preg_match('/<img.+src=\"?(.+\.(jpg|gif|bmp|bnp|png))\"?.+>/i',$str,$match); echo $match[1];/*PHP正则替换图片img标记中的任意属性*/ //1、将src="/uploads/images/20100516000.jpg"替换为src="/uploads/uc/images/20100516000.jpg") print preg_replace('/(<img.+src=\"?.+)(images\/)(.+\.(jpg|gif|bmp|bnp|png)\"?.+>)/i',"\${1}uc/images/\${3}",$str); echo "<hr/>"; //2、将src="/uploads/images/20100516000.jpg"替换为src="/uploads/uc/images/20100516000.jpg",并省去宽和高 print preg_replace('/(<img).+(src=\"?.+)images\/(.+\.(jpg|gif|bmp|bnp|png)\"?).+>/i',"\${1} \${2}uc/images/\${3}>",$str);

<?php/*PHP正则提取图片img标记中的src属性*/ $str = '<center><img src="//img.w3cschool.cn/attachments/image/animals.png"><br />PHP正则提取或更改图片img标记中的任意属性</center>'; //4、取src preg_match('/<img.+src=\"?(.+\.(jpg|gif|bmp|bnp|png))\"?.+>/i',$str,$match); $src = $match[1];$filename_index = strripos($src, '/');$filename = substr($src,$filename_index+1);$host_index = stripos($src,'//img.w3cschool.cn');if ($host_index === 0) {    $imgdir = substr($src, 18, $filename_index-18);} else if($host_index === FALSE){    $imgdir = substr($src, 0, $filename_index);}print_r($imgdir);$src_arr = explode('/', $src);print_r($src_arr);echo $filename;

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