The current "Header Comment Blocks" portion of the Coding Standards was basically copied from PHP sources without alteration. Those headers are often construed to indicate that the license summary for the PHP License and the PHP Group copyright must be included in each file, even if a different license and/or copyright are used.
In addition, the header comments aren't parseable by phpDocumentor.
This RFC has been ratified in PEPr as proposal #128.
This RFC has been integrated into the Coding Standards under the Header Comment Blocks section.