获取文件名后缀_PHP教程

 = "http://www.sina.com.cn/abc/de/fg.php?id=1 "//这个是自己写的
 getUrl( = ('?',  = ([0 = ('.',  [1(getUrl( getExt( = ( = (['path' = (".", [1(getExt( getName( = ( = ['extension'(, ) = ('?',  'start3'.("Y-m-d H:i:s"?>

http://www.bkjia.com/PHPjc/440243.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/440243.htmlTechArticle1. 写一个函数，尽可能高效的，从一个标准 url 里取出文件的扩展名 例如: http://www.sina.com.cn/abc/de/fg.php?id=1 需要取出 php 或 .php ? = "http://ww...