/* PHP正则提取图片img标记中的任意属性 */

$str = '

PHP正则提取或更改图片img标记中的任意属性';

//1、取整个图片代码

preg_match('/]*?src\s*=\s*(\'|\")(.*?)\\1[^>]*?\/?\s*>/i',$str,$match);

echo $match[0];

//2、取width属性

preg_match('//i',$str,$match);

echo $match[1];

//3、取height属性

preg_match('//i',$str,$match);

echo $match[1];

//4、取src

preg_match('//i',$str,$match);

echo $match[1];

//1、将src="/uploads/images/20100516000.jpg"替换为src="/uploads/uc/images/20100516000.jpg") // www.jbxue.com

print preg_replace('/()/i',"\${1}uc/images/\${3}",$str);

echo "

---

";

//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('/(/i',"\${1} \${2}uc/images/\${3}>",$str);

?>