How to change the file type PHP file type judging code

$filename = "D:\\296.mid";
$file = fopen ($filename, "RB");
$bin = Fread ($file, 2); Read-only 2 bytes
Fclose ($file);
$strInfo = @unpack ("C2chars", $bin);
$typeCode = Intval ($strInfo [' chars1 ']. $strInfo [' chars2 ']);
$fileType = ";
Switch ($typeCode)
{
Case 7790:
$fileType = ' exe ';
Break
Case 7784:
$fileType = ' midi ';
Break
Case 8297:
$fileType = ' rar ';
Break
Case 255216:
$fileType = ' jpg ';
Break
Case 7173:
$fileType = ' gif ';
Break
Case 6677:
$fileType = ' bmp ';
Break
Case 13780:
$fileType = ' png ';
Break
Default
echo ' unknown ';
}
Echo ' This is a '. $fileType. ' File: '. $typeCode;
?>

The above describes how to change the file type of PHP file type judgment code, including how to change the file type of content, you want to be interested in PHP tutorial friends helpful.

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