What are some common methods for debugging and understanding array structures in PHP?

When debugging array structures in PHP, one common method is to use the var_dump() function to display the contents of the array and its structure. This can help you understand the data stored in the array and identify any issues with its structure. Another useful method is to use foreach loops to iterate through the array and print out its elements one by one, allowing you to see the data more clearly.

// Using var_dump() to debug array structure
$array = [1, 2, 3, 4, 5];
var_dump($array);

// Using foreach loop to iterate through array
foreach ($array as $element) {
    echo $element . "\n";
}