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- // -------------------------------------------------------
- // this function returns a random string with k length
- // -------------------------------------------------------
- function random_string($k) {
- $str = "";
- for ($i=0;$i<$k;$i++) {
- $randnum = mt_rand(0,61);
- if ($randnum < 10)
- $str .= $randnum;
- else if ($randnum < 36)
- $str .= chr($randnum+55);
- else
- $str .= chr($randnum+61);
- }
- return $str;
- }
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