Let's say you have an array that looks like this:
$myArray []= array('firstname' => 'John' , 'lastname'=> 'Johnson');
$myArray []= array('firstname' => 'Adam' , 'lastname'=> 'Tyson');
$myArray []= array('firstname' => 'Mike' , 'lastname'=> 'Robinson');
$myArray []= array('firstname' => 'David' , 'lastname'=> 'Jackson');
How can you sort $myArray according to the lastname?
This also works
<?php
$myArray []= array('firstname' => 'John' , 'lastname'=> 'Johnson');
$myArray []= array('firstname' => 'Adam' , 'lastname'=> 'Tyson');
$myArray []= array('firstname' => 'Mike' , 'lastname'=> 'Robinson');
$myArray []= array('firstname' => 'David' , 'lastname'=> 'Jackson');
foreach ($myArray as $array) {
$lastnames[] = $array['lastname'];
}
array_multisort($lastnames,SORT_STRING,$myArray);
echo '<pre>',print_r($myArray,1),'</pre>';