What are the potential pitfalls of not using apostrophes when defining an array in PHP?

Not using apostrophes when defining an array in PHP can lead to syntax errors or unexpected behavior in your code. To avoid this issue, always use apostrophes or double quotes around array keys to ensure proper parsing by the PHP interpreter. 

// Incorrect way of defining an array without using apostrophes
$array = [key1 => 'value1', key2 => 'value2'];

// Correct way of defining an array using apostrophes
$array = ['key1' => 'value1', 'key2' => 'value2'];

Keywords

syntax error array definition single quotes double quotes PHP interpreter

Related Questions