How can php randomly generate verification codes?

This article will introduce to you how to randomly generate verification codes in PHP. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to everyone.

randCode([ 'num' => 6, //需要的个数 'isLetter' => 2, //1是纯数字 2是数字加字符串 ]); print_r($re);

The test results are as follows

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