<?php function sequenceAlphaNumeric($code, $count = 1) { $strLength = strlen($code); $base10 = base_convert($code, 45, 10); var_dump($code, $base10);die; $result = base_convert((int) $base10 + $count, 10, 36); $result = str_pad($result, $strLength, '0', STR_PAD_LEFT); $result = strtoupper($result); return $result; } echo sequenceAlphaNumeric('09');
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