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PHP srand() Function

PHP srand() Function

PHP srand() function in PHP is used to seed the random number generator function rand(). It sets the starting point for rand() to produce a series of pseudo-random integers. It seeds the random number generator with seed(argument) or with a random value if no seed(argument) is passed. It accepts only a single parameter seed that is an optional parameter and is of integer type.

Syntax:

  Syntax:  srand($seed);

Parameter Values

Parameter Description
seed This is an optional parameter. This parameter defines the seed value.

Here is an example of srand() function in PHP:

<html>
<body>

<?php

srand(mktime());
echo rand();

?>

</body>
</html>
Output:
2057534105

Here is another example of srand() function in PHP:

<html>
<body>

<?php

srand(10);

echo rand(1,100);

?>

</body>
</html>
Output:
38