PHP 正则表达式匹配 img ,PHP 正则提取或替换图片 img 标记中的任意属性。
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 ); ?> |
1 /* 2 *获取html指定标签的相关属性 3 *@param string $content 要解析HTML内容 4 *@param string $attr 指定要获取的标签属性 5 *@param string $tag 指定解析标签 6 *@return array 7 */ 8 9 function get_html_attr_by_tag($content="",$attr="src",$tag="img"){ 10 11 $arr=array(); 12 13 $cache_arr=array(); 14 15 $attr=explode(',',$attr); 16 17 $tag=explode(',',$tag); 18 19 foreach($tag as $i=>$t){ 20 21 foreach($attr as $a){ 22 23 preg_match_all("/<\s*".$t."\s+[^>]*?".$a."\s*=\s*(\'|\")(.*?)\\1[^>]*?\/?\s*>/i",$content,$match); 24 25 foreach($match[2] as $n=>$m){ 26 27 $arr[$t][$n][$a]=$m; 28 29 } 30 31 } 32 33 } 34 35 return $arr;//array 36 37 }
/**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}