PHP正則提取或替換img標記屬性
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<?php
/*PHP正則提取圖片img標記中的任意屬性*/
$str
=
'<center><img src="/uploads/images/20100516000.jpg" height="120" width="120"><br />PHP正則提取或更改圖片img標記中的任意屬性</center>'
;
//1、取整個圖片代碼
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正則替換圖片img標記中的任意屬性*/
//1、將src="/uploads/images/20100516000.jpg"替換為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、將src="/uploads/images/20100516000.jpg"替換為src="/uploads/uc/images/20100516000.jpg",並省去寬和高
print
preg_replace(
'/(<img).+(src=\"?.+)images\/(.+\.(jpg|gif|bmp|bnp|png)\"?).+>/i'
,"\${1} \${2}uc/images/\${3}>",
$str
);
?>
|
1 /* 2 *獲取html指定標簽的相關屬性 3 *@param string $content 要解析HTML內容 4 *@param string $attr 指定要獲取的標簽屬性 5 *@param string $tag 指定解析標簽 6 *@return array 7 */ 8 9 function get_html_attr_by_tag($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 }
/**獲取html指定標簽的相關屬性*@param string $content 要解析HTML內容*@param string $attr 指定要獲取的標簽屬性*@param string $tag 指定解析標簽*@return array */
function get_html_attr_by_tag($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}