Are there any potential pitfalls to be aware of when sorting arrays with complex structures in PHP?

When sorting arrays with complex structures in PHP, one potential pitfall to be aware of is that the sorting function may not work as expected due to the complexity of the array elements. To solve this issue, you can use a custom sorting function that takes into account the specific structure of the array elements. 

// Sample array with complex structures
$array = [
    ['name' => 'John', 'age' => 30],
    ['name' => 'Alice', 'age' => 25],
    ['name' => 'Bob', 'age' => 35]
];

// Custom sorting function based on 'age' key
usort($array, function($a, $b) {
    return $a['age'] <=> $b['age'];
});

// Print sorted array
print_r($array);

Keywords

multidimensional arrays usort array_multisort comparison functions nested arrays

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