What are common pitfalls when defining arrays in PHP?

One common pitfall when defining arrays in PHP is forgetting to use the array() function or the shorthand [] syntax. This can lead to syntax errors or unexpected behavior in your code. To avoid this issue, always use the correct syntax when defining arrays in PHP.

// Incorrect way to define an array
$incorrectArray = 1, 2, 3;

// Correct way to define an array
$correctArray = array(1, 2, 3);
// or
$correctArray = [1, 2, 3];