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# mt_srand

(3.0.6 - 3.0.18 only, PHP 4 >= 4.0.0)

mt_srand -- Seed the better random number generator

## Description

``void mt_srand` (int seed)`

Seeds the random number generator with `seed`.

    // seed with microseconds
    function make_seed() {
        list($usec, $sec) = explode(' ', microtime());
        return (float) $sec + ((float) $usec * 100000);
    }
    mt_srand(make_seed());
    $randval = mt_rand();

See also mt_rand(), mt_getrandmax(), srand(), rand(), and getrandmax().

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