php自定义扩展名获取函数示例

<?php$url = "http://www.abc.com/abc/de/fg.php?id=1";//这个是自己写的function getUrl($url) {  $date = explode('?', $url);  $date = basename($date[0]);  $date = explode('.', $date);  return $date[1];}var_dump(getUrl($url));//下面两个是网上弄的function getExt($url){  $arr = parse_url($url);  $file = basename($arr['path']);  $ext = explode(".",$file);  return $ext[1];}var_dump(getExt($url));function getName($url) {  $w_param = pathinfo($url);  $str = $w_param['extension'];  list($type, $vars) = explode('?',$str);  return $type;}echo 'start3'.date("Y-m-d H:i:s");