PSR-12 and PER specify requirements for blank lines between top-level "blocks."[1][2]

• Opening <?php tag.
• File-level docblock.
• One or more declare statements.
• The namespace declaration of the file.
• One or more class-based use import statements.
• One or more function-based use import statements.
• One or more constant-based use import statements.
• The remainder of the code in the file.

Additional blank line settings need to be added to support these requirements.

Missing settings:

• blank lines after opening PHP tag
• blank lines before and after file doc-block
• blank lines before and after declare statements
• differentiate between class, function, and const use statements; perhaps a single setting to add blank lines between use groups (class/function/const)

In addition to adding these new settings, the PSR-12 and PER styles should be updated to include/set blank line settings according to their respective style guides.