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PHP random characters

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WBOYOriginal
2016-10-17 09:12:041257browse

随机字符生成
function randStr($length=4,$type="1"){<br>         $array = array(<br>             '1' => '0123456789',<br>             '2' => 'ABCDEFGHIJKLMNOPQRSTUVWXYZ',<br>             '3' => '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ',<br>         );<br>         $string = $array[$type];<br>         $count = strlen($string)-1;<br>         $rand = '';<br>         for ($i = 0; $i < $length; $i++) {<br>             $rand .= $string[mt_rand(0, $count)];<br>         }<br>         return $rand;<br>     }

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