What strategies can be implemented to ensure that arrays are passed correctly as parameters in PHP functions?

When passing arrays as parameters in PHP functions, it is important to ensure that the array is passed correctly to avoid any errors or unexpected behavior. One strategy to ensure this is to check if the parameter is an array before using it within the function. This can be done using the `is_array()` function in PHP. Additionally, you can provide default values for the array parameter to handle cases where no array is passed. 

function processArrayParameter($arr = []) {
    if (!is_array($arr)) {
        echo "Error: Parameter must be an array.";
        return;
    }

    // Process the array here
    foreach ($arr as $value) {
        echo $value . " ";
    }
}

// Example of calling the function with an array parameter
$array = [1, 2, 3, 4, 5];
processArrayParameter($array);

Keywords

arrays parameters functions PHP strategies

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