PHP正则提取或替换img标记属性
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<?php/*PHP正则提取图片img标记中的任意属性*/$str = '<center><img src="/uploads/images/20100516000.jpg" height="120" width="120"><br />PHP正则提取或更改图片img标记中的任意属性</center>';
//1、取整个图片代码preg_match('/<\s*img\s+[^>]*?src\s*=\s*(\'|\")(.*?)\\1[^>]*?\/?\s*>/i',$str,$match);
echo $match[0];
//2、取widthpreg_match('/<img.+(width=\"?\d*\"?).+>/i',$str,$match);
echo $match[1];
//3、取heightpreg_match('/<img.+(height=\"?\d*\"?).+>/i',$str,$match);
echo $match[1];
//4、取srcpreg_match('/<img.+src=\"?(.+\.(jpg|gif|bmp|bnp|png))\"?.+>/i',$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);
?> |
/*
*获取html指定标签的相关属性
*@param string $content 要解析HTML内容
*@param string $attr 指定要获取的标签属性
*@param string $tag 指定解析标签
*@return array
*/ function get_html_attr_by_tag($content="",$attr="src",$tag="img"){ $arr=array(); $cache_arr=array(); $attr=explode(',',$attr); $tag=explode(',',$tag); foreach($tag as $i=>$t){ foreach($attr as $a){ preg_match_all("/<\s*".$t."\s+[^>]*?".$a."\s*=\s*(\'|\")(.*?)\\1[^>]*?\/?\s*>/i",$content,$match); foreach($match[2] as $n=>$m){ $arr[$t][$n][$a]=$m; } } } return $arr;//array }
/**获取html指定标签的相关属性*@param string $content 要解析HTML内容*@param string $attr 指定要获取的标签属性*@param string $tag 指定解析标签*@return array */
function get_html_attr_by_tag($content="",$attr="src",$tag="img"){$arr=array();$cache_arr=array();$attr=explode(',',$attr);$tag=explode(',',$tag);foreach($tag as $i=>$t){foreach($attr as $a){ preg_match_all("/<\s*".$t."\s+[^>]*?".$a."\s*=\s*(\'|\")(.*?)\\1[^>]*?\/?\s*>/i",$content,$match);foreach($match[2] as $n=>$m){$arr[$t][$n][$a]=$m; }}}return $arr;//array}