在数组中显示2个随机Div，而不在PHP中重复

Question

I want to display two Divs from an array at random without the same Div displaying twice.

This is what I've been using to display 1 Div at random

<?
$divs = array('<div id="divFirst">First Div</div>','<div id="divFirst">Second Div</div>','<div id="divFirst">Third Div</div>','<div id="divFirst">Fourth Div</div>');
shuffle($divs);
print array_shift($divs);  
?>

I need to generate a unique pair of random numbers in PHP, Then I should be able to figure out how to make two divs in an array display.

I've searched for this question a lot. And while there are many questions on random non repeating numbers I can't find one for PHP, that doesn't use jQuery, SQL, Javascript or works on modern versions of PHP

Answer 1

Use array_rand() to get 2 random keys from the array:

$divs = array('<div id="divFirst">First Div</div>','<div id="divFirst">Second Div</div>','<div id="divFirst">Third Div</div>','<div id="divFirst">Fourth Div</div>');

// Array with 2 random keys from $divs
$randKeys = array_rand($divs, 2);

echo $divs[$randKeys[0]]; // First random div
echo $divs[$randKeys[1]]; // Second random div

See demo