A function that obtains the file name extension
/*
Getfiletype
Usage: Getfiletype ($filename)
*/
function Getfiletype ($Filename) {
if (Substr_count ($Filename, ".") = = 0) {//Check if there is a. number in the file name.
Return return empty
} else if (substr ($Filename,-1) = = ".") {//check whether to. end, i.e. no extension
Return return empty
} else {
$FileType = STRRCHR ($Filename, "."); Cut from the. Number
$FileType = substr ($FileType, 1); Remove. No.
return $FileType; Return
}
}
$Filename = "TESTFILENAME.PHP4";
$Filename = Getfiletype ($Filename);
Echo $Filename; Print out PHP4
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