正则表达式 - php 正则替换src里面的内容

Question

$url = '<img src="http://img.baidu.com/upload/2312312.jpg">cccvsdvdsv<img src="http://www.sina.com/upload/434dfe2.jpg">';

要替换成
$url = '<img src="/upload/2312312.jpg">cccvsdvdsv<img src="/upload/434dfe2.jpg">';
把域名去掉

Answer 1

$url = '<img src="http://img.baidu.com/upload/2312312.jpg">cccvsdvdsv<img src="http://www.sina.com/upload/434dfe2.jpg">';

echo preg_replace('/src=\"(http:\/\/.*)\//U', 'src="/', $url);