PHP gets the file name extension in the URL

//Remove U The file name extension $url = "Http://sdk.tools.sinaapp.com/index.php?appname=beipiao&version=1" in the RL address; function GetFileName ($url) { $a = explode ('? ', $url); $b = strrpos ($a [0], '. ');//strrpos (the string to be searched for, to find the string, [find where to start]) finds the last occurrence of the string: it returns the last occurrence of the position, or false if not found $c = substr ($a [0], $b +1, 3); substr (manipulated string, start position, [end position]) returns a portion of the string return $c; } echo GetFileName ($url). "; //second method function Getfilenametwo ($url) { $a = Parse_url ($url, Php_url_path);//parse_url () parses the URL and returns its components $b = pathinfo ($a, pathinfo_extension);//pathinfo () return $b; } Print_r (Getfilenametwo ($url)); copy code

File name extension, PHP, URL

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