一个取得文件扩展名的函数(不过函数名叫做取得FILETYPE呢!呵呵!)
<?php /* GetFileType 用法:GetFiletype($filename) */ function GetFiletype($Filename) { if (substr_count($Filename, ".") == 0) { // 检查文件名中是否有.号。 return; // 返回空 } else if (substr($Filename, -1) == ".") { // 检查是否以.结尾,即无扩展名 return; // 返回空 } else { $FileType = strrchr ($Filename, "."); // 从.号处切割 $FileType = substr($FileType, 1); // 去除.号 return $FileType; // 返回 } } $Filename = "Testfilename.php4"; $Filename = GetFileType($Filename); echo $Filename; // 打印出php4 ?>
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