PIN-Generator.php

<?php
/**
 * PHP Form Validator Class
 *
 *
 * @author Simeon Adedokun <femsimade@gmail.com>
 * @copyright (c) 2020, Simeon Adedokun
 * ====================================================
 * Last modified 30th November, 2020
 *
*/

function genID($chartype=0,$numchar=6,$idtype=0,$case=1,$separator='-') {
	/*
	#	Can't generate less than 6 characters, else generates 8; Max=32
	#	$chartype(numeric=0, alphanumeric=1, alhpa+numeric=2, numeric+alpha=3, number+2alpha=4, alpha=5)
	#	$case(lowercase=0 or null, and uppercase=1)
	#	$idtype (normal=0, idV4=1, idV5=2, idV6=3)
	*/
	if (!isset($separator) || $separator=="" || empty($separator)) {
		$separator = "-";
	}

	if($numchar==null || empty($numchar) || $numchar<4 || $numchar>32 || !is_numeric($numchar)) {
		$numchar=6;
		if ($numchar>32) {
			$numchar=32;
		}
	}

	if($case==null || empty($case) || !is_numeric($case)) {
		$case=1; //default case is numeric 1 (uppercase)
	}

	$num = substr(str_shuffle('123456789009876543211357908642097531246805253479943253753'), 0, 30) . substr(str_shuffle(time()), 0, 10).rand(100,9999999);

	$alpha = strtolower(substr(str_shuffle('abcdefghlmnopqrsijklmnopqrstuvwxyzacegikmlmnopqrsoqsuwyzxvtrpnljhfdb'), 0, 32));

	$alphanum = strtolower(substr(str_shuffle('0987654321apple11357908ballcat456789dogfishe53aleiskels853safjfjffhf8585725758583gggoathuginkjugkettlelampmannigeriaorange1234567890who456789epaulquaranr456789amsingingta0a1b2c3d4e5f6g7h8j9k0m1n2p3q4r5s6t7u8v9w0x9y8z1yourinatevivienwasiuxylophoneyahoozachariah1234567890'), 0, 80));

	switch ($idtype) 
	{ 
		case 1:
			//idV4
			switch ($chartype) {
				case 1:
					# alphanumeric shuffled
					$gen = substr(str_shuffle($alphanum),0,3) . $separator . substr(str_shuffle($alphanum),0,3) . $separator . substr(str_shuffle($alphanum),0,3) . $separator . substr(str_shuffle($alphanum),0,3);
					break;
				case 2:
					# alpha+number

					$gen=substr(str_shuffle($alpha),0,1) . substr(str_shuffle($num),0,2) . $separator . substr(str_shuffle($alpha),0,1) . substr(str_shuffle($num),0,2) . $separator . substr(str_shuffle($alpha),0,1) . substr(str_shuffle($num),0,2) . $separator . substr(str_shuffle($alpha),0,1) . substr(str_shuffle($num),0,2);

					break;
				case 3:
					# number+alpha
					$gen=substr(str_shuffle($num),0,2) . substr(str_shuffle($alpha),0,1) . $separator . substr(str_shuffle($num),0,2) . substr(str_shuffle($alpha),0,1) . $separator . substr(str_shuffle($num),0,2) . substr(str_shuffle($alpha),0,1) . $separator .substr(str_shuffle($num),0,2) . substr(str_shuffle($alpha),0,1);

					break;
				case 4:
					# number + 2 alpha - special
					$gen=substr(str_shuffle($num),0,1) . substr(str_shuffle($alpha),0,2) . $separator . substr(str_shuffle($num),0,1) . substr(str_shuffle($alpha),0,2) . $separator . substr(str_shuffle($num),0,1) . substr(str_shuffle($alpha),0,2) . $separator . substr(str_shuffle($num),0,1) . substr(str_shuffle($alpha),0,2);
					break;
				case 5:
					# alpha shuffled
					$gen = substr(str_shuffle($alpha),0,3) . $separator . substr(str_shuffle($alpha),0,3) . $separator . substr(str_shuffle($alpha),0,3) . $separator . substr(str_shuffle($alpha),0,3);
					break;
				default:
					# number
					$gen = substr(str_shuffle($num),0,3) . $separator . substr(str_shuffle($num),0,3) . $separator . substr(str_shuffle($num),0,3) . $separator . substr(str_shuffle($num),0,3);
					break;
			}
			break;
		case 2:
			# idV5
			switch ($chartype) {

				case 1:
					# alphanumeric shuffled
					$gen = substr(str_shuffle($alphanum),0,4) . $separator . substr(str_shuffle($alphanum),0,4) . $separator . substr(str_shuffle($alphanum),0,4) . $separator . substr(str_shuffle($alphanum),0,4);
					break;
				case 2:
					# alpha+number
					$gen=substr(str_shuffle($alpha),0,1) . substr(str_shuffle($num),0,3) . $separator . substr(str_shuffle($alpha),0,1) . substr(str_shuffle($num),0,3) . $separator . substr(str_shuffle($alpha),0,1) . substr(str_shuffle($num),0,3) . $separator . substr(str_shuffle($alpha),0,1) . substr(str_shuffle($num),0,3);
					break;
				case 3:
					# number+alpha
					$gen=substr(str_shuffle($num),0,1) . substr(str_shuffle($alpha),0,3) . $separator . substr(str_shuffle($num),0,1) . substr(str_shuffle($alpha),0,3) . $separator . substr(str_shuffle($num),0,1) . substr(str_shuffle($alpha),0,3) . $separator .substr(str_shuffle($num),0,1) . substr(str_shuffle($alpha),0,3);
					break;
				case 4:
					# number + 2 alpha - special
					$gen=substr(str_shuffle($num),0,2) . substr(str_shuffle($alpha),0,2) . $separator . substr(str_shuffle($num),0,2) . substr(str_shuffle($alpha),0,2) . $separator . substr(str_shuffle($num),0,2) . substr(str_shuffle($alpha),0,2) . $separator . substr(str_shuffle($num),0,2) . substr(str_shuffle($alpha),0,2);
					break;
				case 5:
					# alpha shuffled
					$gen = substr(str_shuffle($alpha),0,4) . $separator . substr(str_shuffle($alpha),0,4) . $separator . substr(str_shuffle($alpha),0,4) . $separator . substr(str_shuffle($alpha),0,4);
					break;
				default:
					# number
					$gen = substr(str_shuffle($num),0,4) . $separator . substr(str_shuffle($num),0,4) . $separator . substr(str_shuffle($num),0,4) . $separator . substr(str_shuffle($num),0,4);
					break;
			}
			break;
		case 3:
			# idV6
			switch ($chartype) {
				case 1:
					# alphanumeric shuffled
					$gen = substr(str_shuffle($alphanum),0,4) . $separator . substr(str_shuffle($alphanum),0,4) . $separator . substr(str_shuffle($alphanum),0,4) . $separator . substr(str_shuffle($alphanum),0,4) . $separator . substr(str_shuffle($alphanum),0,4) . $separator . substr(str_shuffle($alphanum),0,4) . $separator . substr(str_shuffle($alphanum),0,4) . $separator . substr(str_shuffle($alphanum),0,4);
					break;
				case 2:
					# alpha+number
					$gen=substr(str_shuffle($alpha),0,1) . substr(str_shuffle($num),0,3) . $separator . substr(str_shuffle($alpha),0,1) . substr(str_shuffle($num),0,3) . $separator . substr(str_shuffle($alpha),0,1) . substr(str_shuffle($num),0,3) . $separator . substr(str_shuffle($alpha),0,1) . substr(str_shuffle($num),0,3) . $separator . substr(str_shuffle($alpha),0,1) . substr(str_shuffle($num),0,3) . $separator . substr(str_shuffle($alpha),0,1) . substr(str_shuffle($num),0,3) . $separator . substr(str_shuffle($alpha),0,1) . substr(str_shuffle($num),0,3) . $separator . substr(str_shuffle($alpha),0,1) . substr(str_shuffle($num),0,3);
					break;
				case 3:
					# number+alpha
					$gen=substr(str_shuffle($num),0,1) . substr(str_shuffle($alpha),0,3) . $separator . substr(str_shuffle($num),0,1) . substr(str_shuffle($alpha),0,3) . $separator . substr(str_shuffle($num),0,1) . substr(str_shuffle($alpha),0,3) . $separator .substr(str_shuffle($num),0,1) . substr(str_shuffle($alpha),0,3) . $separator . substr(str_shuffle($num),0,1) . substr(str_shuffle($alpha),0,3) . $separator . substr(str_shuffle($num),0,1) . substr(str_shuffle($alpha),0,3) . $separator . substr(str_shuffle($num),0,1) . substr(str_shuffle($alpha),0,3) . $separator .substr(str_shuffle($num),0,1) . substr(str_shuffle($alpha),0,3);
					break;
				case 4:
					# number + 2 alpha - special
					$gen=substr(str_shuffle($num),0,2) . substr(str_shuffle($alpha),0,2) . $separator . substr(str_shuffle($num),0,2) . substr(str_shuffle($alpha),0,2) . $separator . substr(str_shuffle($num),0,2) . substr(str_shuffle($alpha),0,2) . $separator . substr(str_shuffle($num),0,2) . substr(str_shuffle($alpha),0,2) . $separator . substr(str_shuffle($num),0,2) . substr(str_shuffle($alpha),0,2) . $separator . substr(str_shuffle($num),0,2) . substr(str_shuffle($alpha),0,2) . $separator . substr(str_shuffle($num),0,2) . substr(str_shuffle($alpha),0,2) . $separator . substr(str_shuffle($num),0,2) . substr(str_shuffle($alpha),0,2);
					break;
				case 5:
					# alpha shuffled
					$gen = substr(str_shuffle($alpha),0,4) . $separator . substr(str_shuffle($alpha),0,4) . $separator . substr(str_shuffle($alpha),0,4) . $separator . substr(str_shuffle($alpha),0,4) . $separator . substr(str_shuffle($alpha),0,4) . $separator . substr(str_shuffle($alpha),0,4) . $separator . substr(str_shuffle($alpha),0,4) . $separator . substr(str_shuffle($alpha),0,4);
					break;
				default:
					# number
					$gen = substr(str_shuffle($num),0,4) . $separator . substr(str_shuffle($num),0,4) . $separator . substr(str_shuffle($num),0,4) . $separator . substr(str_shuffle($num),0,4) . $separator . substr(str_shuffle($num),0,4) . $separator . substr(str_shuffle($num),0,4) . $separator . substr(str_shuffle($num),0,4) . $separator . substr(str_shuffle($num),0,4);
					break;
			}
			break;
		default:
			# normal
			# only here I need $numchar to work
			switch ($chartype) {
				case 1:
					# alphanumeric shuffled
					$gen = substr(str_shuffle($alphanum),0,$numchar);
					break;
				case 2:
					# alpha+number
					$gen=substr(str_shuffle($alpha),0,$numchar-ceil($numchar/2)) . substr(str_shuffle($num),0,ceil($numchar/2));
					break;
				case 3:
					# number+alpha
					$gen=substr(str_shuffle($num),0,$numchar-ceil($numchar/3)) . substr(str_shuffle($alpha),0,ceil($numchar/3));
					break;
				case 4:
					# number + 2 alpha - special
					$gen=substr(str_shuffle($num),0,$numchar-2) . substr(str_shuffle($alpha),0,2);
					break;
				case 5:
					# alpha
					$gen=substr(str_shuffle($alpha),0,$numchar);
					break;
				default:
					# number
					$gen=substr(str_shuffle($num),0,$numchar);
					break;
			}
	}
	#check and covert if $case is upper
	if ($case==1) {
		$gen=strtoupper($gen);
	}

	# now, return the generated value
	return $gen;
}
?>