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random_bytes

Description

The random_bytes of Random for PHP gets cryptographically secure random bytes.

Syntax

random_bytes(
    int $length
): string

Parameters

length

The length of the random string that should be returned in bytes; must be 1 or greater.

Return

Returns a string containing the requested number of cryptographically secure random bytes.

Examples

1 · length

<?

$length = 10;

$return = random_bytes($length);

var_dump($return);

string(10) "Z8N��V��"

2 · hexadecimal

<?

$length = 10;

$return = random_bytes($length);

$hexadecimal = bin2hex($return);

var_dump($return, $hexadecimal);

string(10) "���)�ƉF
 "
string(20) "cfe8ed299dc689460d20"