CSPRNG
Installing/Configuring
CSPRNG
PHP Manual

# Introduction

The » cryptographically secure pseudo-random number generator (CSPRNG) API provides an easy and reliable way to generate crypto-strong random integers and bytes for use within cryptographic contexts.

This exists as of PHP 7.0.0 but there is also a » userland implementation for PHP >= 5.2.0.

CSPRNG
Installing/Configuring
CSPRNG
PHP Manual