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# srand

(PHP 3 <= 3.0.18, PHP 4 >= 4.0.0)

srand -- Seed the random number generator

## Description

``void 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);
    }
    srand(make_seed());
    $randval = rand();

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

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