What is wrong with the 5.php garbage collection mechanism?
A. In a garbage cycle, find out which part is garbage by checking whether the reference count is decremented by 1, and checking which variable containers have zero references.
B. The garbage collection mechanism can be turned on and off by calling gc_enable () and gc_disable () functions
C. Save memory by cleaning up unused variables
D, PHP code will automatically perform garbage collection after execution, so there is no need to manually perform garbage collection
Answer:D
What is wrong with the 5.php garbage collection mechanism?
A. In a garbage cycle, find out which part is garbage by checking whether the reference count is decremented by 1, and checking which variable containers have zero references. B. The garbage collection mechanism can be turned on and off by calling gc_enable () and gc_disable () functions C. Save memory by cleaning up unused variables D, PHP code will automatically perform garbage collection after execution, so there is no need to manually perform garbage collection