Update php snippet due to PSR-12

[oldy777]

Definition for classes

The opening brace for the class MUST go on its own line; the closing brace for the class MUST go on the next line after the body.

Definition for methods

Method and function names MUST NOT be declared with space after the method name. The opening brace MUST go on its own line, and the closing brace MUST go on the next line following the body. There MUST NOT be a space after the opening parenthesis, and there MUST NOT be a space before the closing parenthesis.