How to use php array_rand function

php The array_rand function is used to return a random key name in an array, or if you specify that the function returns more than one key name, return an array containing random key names. The syntax is array_rand(array,number), and the parameter array is required and refers to the specified array.

#php array_rand function how to use?

Function: Returns a random key name in the array, or if you specify that the function returns more than one key name, returns an array containing random key names.

Syntax:

array_rand(array,number)

Parameters:

array required. Specifies an array.

number is optional. Specifies how many random key names are returned.

Description:

Randomly select one or more elements from the array and return it. The second parameter is used to determine how many elements to select. If more than one element is selected, an array containing a random key is returned, otherwise the key of the element is returned.

php array_rand() function usage example 1

<?php
$a=array("php中文网","西门","讲师","灭绝师太","无忌哥哥");
$rand_keys=array_rand($a,3);
echo $a[$rand_keys[0]]."<br>";
echo $a[$rand_keys[1]]."<br>";
echo $a[$rand_keys[2]];
?>

Output:

php中文网
讲师
无忌哥哥

php array_rand() function usage example 2

<?php
$a=array("red","green","blue","yellow","brown");
$random_keys=array_rand($a,3);
echo $a[$random_keys[0]]."<br>";
echo $a[$random_keys[1]]."<br>";
echo $a[$random_keys[2]];
?>

Output:

red
green
brown

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