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Online Sandbox for SQL and PHP: Write, Run, Test, and Share SQL Queries and PHP Code
<?php
$data = [
["app" => 4, 'name'=>'Den'],
["app" => 3, 'name' => 'Deny'],
["app" => 1, 'name'=> 'Deniel'],
["app" => 2, 'name'=> 'Denielo']
];
usort($data, function($a, $b){
return strlen(implode(array_values($b))) <=> strlen(implode(array_values($a)));
});
print_r($data);