What are some potential pitfalls when using array functions in PHP?

One potential pitfall when using array functions in PHP is not checking if the input array is empty before applying the function. This can lead to errors or unexpected behavior if the function is not designed to handle empty arrays. To solve this issue, always check if the array is empty before using array functions. 

// Check if the array is empty before using array functions
if (!empty($array)) {
    // Apply array function to non-empty array
    $result = array_map('strtoupper', $array);
} else {
    // Handle empty array case
    $result = [];
}

Keywords

array functions PHP errors bugs performance

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