How to sort arrays inside an array?

Question

I need to sort arrays inside an array array based on one of the values ​​of the array array.

For instance:

$data = array( array( 1, "Article One", 132, 12402773, 3 ), array( 2, "Article Two", 251, 12519283, 5 ), array( 3, "Article Three", 107, 12411321, 3 ), array( 4, "Article Four", 501, 12228135, 4 ) ); 

By default, if I print the second element of each array:

• Article One
• Article Two
• Article Three
• Article Four

I need to sort it in descending order by the third element of the child array.

So it will be like this:

• Article Four
• Article Two
• Article One
• Article Three

Since 501> 251> 132> 107.

Any suggestion?

Answer 1

I usually use usort() for this:

 function compare($a, $b) { return ($a[2] > $b[2]); } usort($data, 'compare'); 

Answer 2

array_multisort :)