<?php
class coupon {
CONST MIN_LENGTH = 8;
/**
* MASK FORMAT [XXX-XXX]
* 'X' this is random symbols
* '-' this is separator
*
* @return string
* @throws Exception
*/
static public function generate($options = []) {
// to accept options as function arguments like on README
if (!is_array($options) && func_num_args() > 0) {
$keys = ['length', 'prefix', 'suffix', 'letters', 'numbers', 'symbols', 'mixed_case', 'mask'];
$opt = [];
foreach (func_get_args() as $key => $value) {
$opt[ $keys[ $key ] ] = $value;
}
$options = $opt;
}
$length = (isset($options['length']) ? filter_var($options['length'], FILTER_VALIDATE_INT, ['options' => ['default' => self::MIN_LENGTH, 'min_range' => 1]]) : self::MIN_LENGTH );
$prefix = (isset($options['prefix']) ? $options['prefix'] : '' );
var_dump($options);
$suffix = (isset($options['suffix']) ? self::cleanString(filter_var($options['suffix'], FILTER_SANITIZE_STRING)) : '' );
$useLetters = (isset($options['letters']) ? filter_var($options['letters'], FILTER_VALIDATE_BOOLEAN) : true );
$useNumbers = (isset($options['numbers']) ? filter_var($options['numbers'], FILTER_VALIDATE_BOOLEAN) : false );
$useSymbols = (isset($options['symbols']) ? filter_var($options['symbols'], FILTER_VALIDATE_BOOLEAN) : false );
$useMixedCase = (isset($options['mixed_case']) ? filter_var($options['mixed_case'], FILTER_VALIDATE_BOOLEAN) : false );
$mask = (isset($options['mask']) ? filter_var($options['mask'], FILTER_SANITIZE_STRING) : false );
$uppercase = ['Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', 'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', 'Z', 'X', 'C', 'V', 'B', 'N', 'M'];
$lowercase = ['q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', 'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', 'z', 'x', 'c', 'v', 'b', 'n', 'm'];
$numbers = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9];
$symbols = ['`', '~', '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '-', '_', '=', '+', '\\', '|', '/', '[', ']', '{', '}', '"', "'", ';', ':', '<', '>', ',', '.', '?'];
$characters = [];
$coupon = '';
if ($useLetters) {
if ($useMixedCase) {
$characters = array_merge($characters, $lowercase, $uppercase);
} else {
$characters = array_merge($characters, $uppercase);
}
}
if ($useNumbers) {
$characters = array_merge($characters, $numbers);
}
if ($useSymbols) {
$characters = array_merge($characters, $symbols);
}
if ($mask) {
for ($i = 0; $i < strlen($mask); $i++) {
if ($mask[$i] === 'X') {
$coupon .= $characters[mt_rand(0, count($characters) - 1)];
} else {
$coupon .= $mask[$i];
}
}
} else {
for ($i = 0; $i < $length; $i++) {
$coupon .= $characters[mt_rand(0, count($characters) - 1)];
}
}
return $prefix . $coupon . $suffix;
}
/**
* @param int $maxNumberOfCoupons
* @param array $options
* @return array
*/
static public function generate_coupons($maxNumberOfCoupons = 1, $options = []) {
$coupons = [];
for ($i = 0; $i < $maxNumberOfCoupons; $i++) {
$temp = self::generate($options);
$coupons[] = $temp;
}
return $coupons;
}
/**
* @param int $maxNumberOfCoupons
* @param $filename
* @param array $options
*/
static public function generate_coupons_to_xls($maxNumberOfCoupons = 1, $filename, $options = []) {
$filename = (empty(trim($filename)) ? 'coupons' : trim($filename));
header('Content-Type: application/vnd.ms-excel');
echo 'Coupon Codes' . "\t\n";
for ($i = 0; $i < $maxNumberOfCoupons; $i++) {
$temp = self::generate($options);
echo $temp . "\t\n";
}
header('Content-disposition: attachment; filename=' . $filename . '.xls');
}
/**
* Strip all characters but letters and numbers
* @param $string
* @param array $options
* @return string
* @throws Exception
*/
static private function cleanString($string, $options = []) {
$toUpper = (isset($options['uppercase']) ? filter_var($options['uppercase'], FILTER_VALIDATE_BOOLEAN) : false);
$toLower = (isset($options['lowercase']) ? filter_var($options['lowercase'], FILTER_VALIDATE_BOOLEAN) : false);
$striped = preg_replace('/[^a-zA-Z0-9]/', '', trim($string));
// make uppercase
if ($toLower && $toUpper) {
throw new Exception('You cannot set both options (uppercase|lowercase) to "true"!');
} else if ($toLower) {
return strtolower($striped);
} else if ($toUpper) {
return strtoupper($striped);
} else {
return $striped;
}
}
}
echo coupon::generate(['length' => 6, 'prefix' => ”XCS-”]);