When declaring a function
- Do not add a space before a comma
- Add a space after a comma
- Add a space after an equal sign
Example:
function myFunction($x, $y, $z = null){...}
When calling a function
- Do not add a space before the opening parenthesis
- Do not add a space after the opening parenthesis
- Do not add a space before the closing parenthesis
- Do not add a space before a comma
- Add a space after a comma
Example:
myFunction('x', 'y', 'z');
