<?php function build_order_no() { mt_srand((double) microtime() * 1000000); return date('Ymd') . str_pad(mt_rand(1, 99999), 5, '0', STR_PAD_LEFT); } $i = 10; while($i) { $no = build_order_no(); $uniqid = uniqid(); var_dump("$no\n$uniqid\n"); // file_put_contents('test.log', "$no\n$uniqid\n", FILE_APPEND); --$i; } echo PHP_EOL;
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