php的str_replace()函数使用正则

字符串如下：
“http:\/\/www.sina.com\/music1\/23412455.mp3?time=2234523&type=mp3”
“http:\/\/www.sina.com\/music2\/4325243.mp3?time=2234523&type=mp3”
“http:\/\/www.sina.com\/music3\/346553.mp3?time=2234523&type=mp3”
需要对http开始，？结束之间的字符串换成“abc”，在php的str_replace函数里，该如何写？谢谢

回复讨论(解决方案)

str_replace 用不了正则，用preg_replace 吧

正则能做到.

$str="http:\/\/www.sina.com\/music1\/23412455.mp3?time=2234523&type=mp3";
str_replace(substr($str,4,strpos($str,'?')),'abc',$str);

$urls = array("http:\/\/www.sina.com\/music1\/23412455.mp3?time=2234523&type=mp3","http:\/\/www.sina.com\/music2\/4325243.mp3?time=2234523&type=mp3","http:\/\/www.sina.com\/music3\/346553.mp3?time=2234523&type=mp3");foreach($urls as $url){	echo preg_replace('@http(.*?)\?@i','abc',$url).'
';}