php正则操作img中任意属性(取属性，正则替换等)

<?php
$as_message = preg_replace(\'/<img.+src=\"?(.+\.(jpg|gif|bmp|bnp|png))\"?.+>/i\', "<a href=\"$1\" target=_blank title=点击放大图片><img src=\"$1\" border=0 ;screen.width-600)this.width=screen.width-600\"  return bbimg(this)\" ></a>", $as_message);
$as_message = preg_replace(\'/<IMG.+SRC=\"?(.+\.(jpg|gif|bmp|bnp|png))\"?.+>/i\', "<a href=\"$1\" target=_blank title=点击放大图片><img src=\"$1\" border=0 ;screen.width-600)this.width=screen.width-600\"  return bbimg(this)\" ></a>", $as_message);
?>
 

<table width="90%" border="0" cellpadding="0" cellspacing="0" id="abc">
  <tr>
    <td>&nbsp;</td>
  </tr>
</table>
<script>
var abc=document.getElementById("abc");
var imgs=abc.getElementsByTagName("img");
for (var i=0,g;g=imgs[i];i++)
g.onload=function(){if (this.width>600){this.width=600}else{if (this.height>600)this.height=600}}
</script>

<?php
/*
 正则取图片img标记中的任意属性
 搜集整理 脚本学堂 http://www.jbxue.com
*/
$word = \'<p height="22" align="cenetr">111 22</p> <img  height="60" src="/upload/images/aaa.jpg"    width=100 style=><div style="float:left;">中国人</div>\';
//取width
preg_match(\'/<img.+(width=\"?\d*\"?).+>/i\',$word,$matches);
echo $matches[1];

//取height
preg_match(\'/<img.+(height=\"?\d*\"?).+>/i\',$word,$matches);
echo $matches[1];

//取src
preg_match(\'/<img.+src=\"?(.+\.(jpg|gif|bmp|bnp|png))\"?.+>/i\',$word,$matches);
echo $matches[1];

/*正则替换去掉或改变图片img标记中的任意属性*****/
$str = \'<p height="22" align="cenetr">111 22</p> <img  height="60" src="/upload/images/aaa.jpg"    width=100 style=><div style="float:left;">中国人</div>
<p height="22" align="cenetr">31313 224344</p> <img src="/upload/images/bbb.jpg"  height="60"    width=100 style=><div style="float:left;">1212121</div>\';

//改变src属性(此处将原来的src="/upload/images/bbb.jpg"改变为src="/upload/_thumbs/Images/bbb.jpg")
print preg_replace(\'/(<img.+src=\"?.+)(images\/)(.+\.(jpg|gif|bmp|bnp|png)\"?.+>)/i\',"\${1}_thumbs/Images/\${3}",$str);

/*改变src属性,
此处将原来的src="/upload/images/bbb.jpg"改变为src="/upload/_thumbs/Images/bbb.jpg",并舍弃宽和高
(比如你想在前台显示缩略图,但数据库中存储的是原图的路径。为什么要舍弃宽高??你缩略图啊!还是原图的宽高,会怎样???)
*/
print preg_replace(\'/(<img).+(src=\"?.+)images\/(.+\.(jpg|gif|bmp|bnp|png)\"?).+>/i\',"\${1} \${2}_thumbs/Images/\${3}>",$str);
?>