php array_rand() function
Translation results：
UK [rænd] US [rænd]
n. The padding between the heel of the shoe and the sole, edge
Plural: rands rand
php array_rand() functionsyntax
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:
| Description | |
| Required. Specifies an array. | |
| 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() functionexample
<?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]];
?>Run instance»
Click the "Run instance" button to view the online instance
Output:
php中文网 讲师 无忌哥哥
<?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]];
?>Run instance»
Click the "Run instance" button to view the online instance
Output:
red green brown