Generating a Unique Identifier : sha1 « Utility Function « PHP






  1. PHP
  2. Utility Function
  3. sha1

Generating a Unique Identifier

 
<?php
function create_unique() {

    $data = $_SERVER['HTTP_USER_AGENT'] . $_SERVER['REMOTE_ADDR'] . time() . rand();

    return sha1($data);
}

$newhash = create_unique();
echo "<pre>{$newhash}</pre>";
?>








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2.string sha1 ( string str [, bool raw_output] )