What are the potential pitfalls of using array_multisort in PHP, especially in older versions like PHP4?

Using array_multisort in older versions of PHP like PHP4 can lead to potential pitfalls such as decreased performance and compatibility issues with newer versions of PHP. To avoid these problems, it is recommended to use alternative sorting functions like usort or uasort which provide more flexibility and better performance. 

// Example of using usort instead of array_multisort in PHP
$data = array(
    array('name' => 'John', 'age' => 30),
    array('name' => 'Jane', 'age' => 25),
    array('name' => 'Bob', 'age' => 35)
);

usort($data, function($a, $b) {
    return $a['age'] - $b['age'];
});

print_r($data);

Keywords

array_multisort PHP4 backwards compatibility deprecated sorting algorithm

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