PHP提取图片img标记中的任意属性的简单实例_PHP

/* 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('/<\s*img\s+[^>]*?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="https://www.gxlcms.com/uploads/images/20100516000.jpg"替换为src="/uploads/uc/images/20100516000.jpg")
print preg_replace('/()/i',"\${1}uc/images/\${3}",$str);
echo "

//2、将src="https://www.gxlcms.com/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);

?>