php正则表达式匹配img中任意属性的方法

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Release: 2016-06-23 13:17:31
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`<?php /*PHP正则提取图片img标记中的任意属性*/ $str = '<center><img  src="/uploads/images/20100516000.jpg"    style="max-width:90%"  style="max-width:90%" alt="php正则表达式匹配img中任意属性的方法" ><br />PHP正则提取或更改图片img标记中的任意属性</center>'; //1、取整个图片代码 preg_match('/<\s*img\s+[^>]*?src\s*=\s*(\'|\")(.*?)\\1[^>]*?\/?\s*>/i',$str,$match); echo $match[0]; //2、取width preg_match('/<img .+(   style="max-width:90%"?\d*\"?).+ alt="php正则表达式匹配img中任意属性的方法" >/i',$str,$match); echo $match[1]; //3、取height preg_match('/<img .+(height=\"?\d*\"?).+ alt="php正则表达式匹配img中任意属性的方法" >/i',$str,$match); echo $match[1]; //4、取src preg_match('/<img .+src=\"?(.+\.(jpg|gif|bmp|bnp|png))\"?.+ alt="php正则表达式匹配img中任意属性的方法" >/i',$str,$match); echo $match[1]; (PS:T不错的php Q扣峮:276167802,验证:csl) /*PHP正则替换图片img标记中的任意属性*/ //1、将src="/uploads/images/20100516000.jpg"替换为src="/uploads/uc/images/20100516000.jpg") print preg_replace('/(<img .+src=\"?.+)(images\/)(.+\.(jpg|gif|bmp|bnp|png)\"?.+ alt="php正则表达式匹配img中任意属性的方法" >)/i',"\${1}uc/images/\${3}",$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)\"?).+ alt="php正则表达式匹配img中任意属性的方法" >/i',"\${1} \${2}uc/images/\${3}>",$str); ?> `
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