PHP - rand

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Metóda - rand

(PHP 4, PHP 5, PHP 7)

The rand() function returns a pseudo-random number.

The function can be called without parameters, so it returns a value between 0 and getrandmax(). However, you can not enter only one parameter.

Procedurálne

• function rand (int $min, int $max) : int
• function rand (int $min, int $max) : int

Parametre

Názov	Dátový typ	Predvolená hodnota	Popis
$min	int		The minimum value.
$max	int		The maximum value.

Mávratovej hodnoty

Vracia: int

A random number.

Príklady

<?php
echo ("a number between 0 and ". getrandmax()." = " . rand() . "<br />");
echo ("a number between 0 and ". getrandmax()." = " . rand(0, getrandmax()) . "<br />");
echo ("a number between -10 and -5 = " . rand(-10, -5) . "<br />"); // negative numbers work as well
echo ("a number between 10 and 10 = " . rand(10, 10) . "<br />");       // two identical numbers
echo ("a number between 20 and 10 = " . rand(20, 10) . "<br />");       // the order of the larger and smaller number does not matter
echo ("a number between 8.4 and 11.5 = " . rand(8.4, 11.5) . "<br />"); // decimal numbers generate integers