PHP coding specification (18)

7.1 empty lines separate code segments related to logic to improve readability. In the following cases, two empty rows should always be used:-between two segments of a source file and between class declaration. in the following cases, one empty row should always be used: -between two methods-SyntaxHighlighter for local variables in the method and the first statement of the method. all (); 7.1 blank lines

Empty lines separate segments related to logic to improve readability.

Two empty rows should always be used in the following cases:
-Two sections of a source file
-Inter-class declaration

Always use a blank line in the following cases:
-Between two methods
-Between the local variable in the method and the first statement of the method
-Block or single line comment
-Two logical segments in a method to improve readability