PHP manages freeing all resources. Users does not required to free file
handle resource, database resources, memory, etc, unless programmer need
to free resource during script execution.
(All resources are released
after script execution)
PHP4 also have reference count feature.
For example, memory for variables is shared when it assigned to other
variable. If contents has been changed, PHP4 allocate new memory for it.
For example, programmer does not have to use pass by reference
for large parameters for better performance with PHP4.
It would
be a nice section for new PHP users, if there is "Resource
Handling" section or like. Explanation about reference count feature
in PHP4 would be very helpful to write better PHP4 scripts also.
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Spotting References
