ZEND_VM_STACK_HEADER_SLOTS  145 Zend/zend_execute.c 	((ZEND_VM_STACK_PAGE_SLOTS(gen) - ZEND_VM_STACK_HEADER_SLOTS) * sizeof(zval))
ZEND_VM_STACK_HEADER_SLOTS  149 Zend/zend_execute.h 	(((zval*)(stack)) + ZEND_VM_STACK_HEADER_SLOTS)