There are several ways to get the file name extension from PHP to get the file name extension

There are a number of ways to get file extensions, but not limited to the listed methods, more of their own to explore <?php//php get the file name extension method one: function Extend_1 ($file _name) {$retval = ""; $pt = Strrpos ($file _name, "."); if ($pt) $retval =substr ($file _name, $pt +1, strlen ($file _name)-$pt); return ($retval);  //php Gets the file name extension of method two function extend_2 ($file _name) {$extend = PathInfo ($file _name); $extend = Strtolower ($extend [" Extension "]); return $extend;  //php Get the file extension method three function extend_3 ($file _name) {$extend =explode (".", $file _name); $va =count ($extend) -1;return $extend [$va]; }?>

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