(PHP ActiveX) Calculate MD5 Hash of File (or SHA1, SHA256, and other hash algorithms)

Demonstrates how to calculate a hash for a file's contents.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Crypt2')
$crypt = new COM("Chilkat.Crypt2");

// Set the name of the hash algorithm.
// Other choices include "sha1", "sha256", "sha384", "sha512", "md2", "md5", and "haval". 
$crypt->HashAlgorithm = 'md5';

// EncodingMode specifies the encoding of the hash output.
// It may be "hex", "url", "base64", or "quoted-printable".
$crypt->EncodingMode = 'hex';

// Files of any type may be hashed -- it doesn't matter
// if the file is binary or text...

$hashStr = $crypt->hashFileENC('/temp/something.dat');
if ($crypt->LastMethodSuccess != 1) {
    print $crypt->LastErrorText . "\n";
    exit;
}

print $hashStr . "\n";

?>