40 lines
1013 B
PHP
40 lines
1013 B
PHP
<?php
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namespace common\components;
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use common\models\Card;
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class FreeUniqueCardNumberGenerator extends \yii\base\Object {
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public $count;
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public $keyset = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ';
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public $length = 6;
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public $cache = [ ];
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public $prefix = "";
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public function generate() {
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if ($this->count == 0) {
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return;
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}
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for($i = 0; $i < $this->count; $i ++) {
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$unique = false;
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$number = null;
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while ( $unique == false ) {
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$number = Helper::generateRandomString($this->length, $this->keyset);
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$number = $this->prefix . $number;
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$unique = $this->checkCacheUnique ( $number ) && $this->checkDBUniqu ( $number );
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}
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$this->cache [] = $number;
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}
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}
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protected function checkDBUniqu($number) {
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$query = Card::find ();
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Card::addCardNumberCondition ( $query, $number );
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$found = $query->all ();
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$result = count ( $found ) == 0;
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return $result;
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}
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protected function checkCacheUnique($number) {
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return array_search ( $number, $this->cache ) === false;
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}
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} |