Question

How to generate N strings of different X random characters in PHP

Answer 1

function random($N) {
    return rand(pow(10, $N - 1), pow(10, $N) - 1);
}

function generateRandomString($slen= 10) {
    $characters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
    $clen = strlen($characters);
    $randomString = '';
    for ($i = 0; $i < $slen; $i++) {
        $randomString .= $characters[rand(0, $clen - 1)];
    }
    return $randomString;
}

for ($i = 0; $i < 5; $i++) {
    echo generateRandomString(random(2)) . "\n"; // 2 digits different random numbers every iteration
}



/*
run:

eztSKTrloWTOIvTGElsEkIDHgIaSCkmxLDiuNGPnqkERpYLxCGYLSm
CFFmkMMMOEwQcOdsyjDLrStvTgl
rRwldGOAzjVtrDgurLkEbriwiVYZqCLHrfwCvIWhfCRDPZAZXnxFSGbeQchDsISyYpVCyHnGCVDRpmC
hDTerGpmbTpeZZcMvYtye
CXgOhJIOuJPoGbWhdaPAxEPkcZwpEhpbbiMYoSwpyJDaNFDVUYAhelThXVzkOvoUrdRxDgtrGMPl

*/

 

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