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Online Sandbox for SQL and PHP: Write, Run, Test, and Share SQL Queries and PHP Code
<?php
$data = [
["app" => 7],
["app" => 3],
["app" => 12],
["app" => 5]
];
usort(
$data,
fn($a, $b) => $a['app'] <=> $b['app']
);
print_r($data);