What are best practices for handling and manipulating arrays in PHP, especially for beginners?

When handling and manipulating arrays in PHP, beginners should familiarize themselves with basic array functions such as `array_push`, `array_pop`, `array_shift`, and `array_unshift`. It's important to understand how to access and modify array elements using indexes, as well as how to iterate over arrays using loops like `foreach` or `for`. Additionally, using functions like `array_merge` or `array_filter` can help in manipulating arrays effectively.

// Example of adding an element to an array using array_push
$myArray = [1, 2, 3];
array_push($myArray, 4);

// Example of iterating over an array using foreach
foreach($myArray as $value) {
    echo $value . " ";
}

// Example of merging two arrays using array_merge
$anotherArray = [5, 6, 7];
$mergedArray = array_merge($myArray, $anotherArray);