How to use php rand function

php The rand() function is used to generate random integers within a specified range. The syntax is "rand(min,max)". The parameter min specifies the minimum number in the range, and the parameter max specifies the maximum number in the range; if not If the parameters are specified, a pseudo-random integer between 0 and RAND_MAX is returned.

How to use the rand() function?

Function: Get a random number from the parameter range

Syntax:

rand(min,max)

Parameter:

min, indicating the minimum number in the range

max, represents the maximum number in the range

Note: If the optional parameters min and max are not provided, rand() returns a pseudo-random integer between 0 and RAND_MAX. For example, if you want a random number between 5 and 15, inclusive, use rand(5, 15).

php rand() function example 1

<?php
$i = 1;
$j = 9;
$k = rand($i,$j);
echo "取得的随机数为".$k;
?>

Output:

随机输出1-9之间的一个整数

php rand() function example 2

<?php
echo rand(1,100);
?>

Output:

随机输出1-100之间的一个整数

The above is the detailed content of How to use php rand function. For more information, please follow other related articles on the PHP Chinese website!