php random string for filename

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Maimouna
28 Feb 2017
1function generateRandomString($length = 25) {
2    $characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
3    $charactersLength = strlen($characters);
4    $randomString = '';
5    for ($i = 0; $i < $length; $i++) {
6        $randomString .= $characters[rand(0, $charactersLength - 1)];
7    }
8    return $randomString;
9}
10//usage 
11$myRandomString = generateRandomString(5);
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