Code Examples -> Dollar Serial Number Validator

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PHP Code Examples

Title :	Dollar Serial Number Validator
Categories :	PHP, Security, Algorithms	Alix Axel
Date :	Jun 19th 2008
Grade :	4 of 5 (graded 2 times)
Viewed :	6682
File :	No file for this code example.
Images :	No Images for this code example.

Search :	More code by Alix Axel
Action :	Grade This Code Example
Tools :	My Examples List

Code


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This function lets you validate serial numbers of dollar bank notes.

<?php

/**
* Checks if the input string is a valid Dollar banknote serial number.
*
* @param string $string
* @return bool
*/
function Dollar($string)
{
$string = strtoupper(trim($string));

if (strlen($string) == 11)
{
$charset = array('A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'V', 'U', 'W', 'X', 'Y', 'Z');

if (in_array($string[0], $charset))
{
$string = substr($string, 1);
}

else
{
return false;
}
}

if (strlen($string) == 10)
{
$charset = array('A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L');

if (in_array($string[0], $charset))
{
$string = substr($string, 1);
}

else
{
return false;
}

if (is_numeric(substr($string, 0, 8)))
{
$string = substr($string, 8);
}

else
{
return false;
}

$charset = array('A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', '*', 'P', 'Q', 'R', 'S', 'T', 'V', 'U', 'W', 'X', 'Y', 'Z');

if (in_array($string[0], $charset))
{
return true;
}
}

return false;
}

// Examples:

var_dump(Dollar('CB47511319A'));

?>

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