Created
September 8, 2013 13:41
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A NRIC utility class implemented in PHP. For validating NRIC numbers or generating random NRIC numbers.
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<?php | |
namespace Mauris\Utility; | |
class NricUtility | |
{ | |
public static function validate($nric) | |
{ | |
$nric = strtoupper($nric); | |
if (strlen($nric) == 9) { | |
$hash = self::checksum(substr($nric, 0, 8)); | |
return $hash == $nric[8]; | |
} | |
return false; | |
} | |
public static function checksum($nric) | |
{ | |
$nric = strtoupper($nric); | |
if (strlen($nric) == 8) { | |
$prefix = $nric[0]; | |
$nric = substr($nric, 1); | |
$number = $nric[0] * 2 + $nric[1] * 7 + $nric[2] * 6 | |
+ $nric[3] * 5 + $nric[4] * 4 + $nric[5] * 3 | |
+ $nric[6] * 2; | |
if ($prefix == 'T' || $prefix == 'G') { | |
$number += 4; | |
} | |
$mod = $number % 11; | |
$hash = array( | |
array('J', 'Z', 'I', 'H', 'G', 'F', 'E', 'D', 'C', 'B', 'A'), | |
array('X', 'W', 'U', 'T', 'R', 'Q', 'P', 'N', 'M', 'L', 'K') | |
); | |
if (in_array($prefix, array('S', 'T'))) { | |
return $hash[0][$mod]; | |
} elseif (in_array($prefix, array('F', 'G'))) { | |
return $hash[1][$mod]; | |
} | |
} | |
} | |
public static function generate($limit = 1, $prefixes = array('S')) | |
{ | |
$result = array(); | |
for ($i = 0; $i < $limit; ++$i) { | |
$number = sprintf('%1$07d', mt_rand(0, 9999999)); | |
$prefix = $prefixes[mt_rand(0, count($prefixes) - 1)]; | |
$check = self::checksum($prefix . $number); | |
$result[] = $prefix . $number . $check; | |
} | |
return $result; | |
} | |
} |
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