Zend Engine 1 is the internal engine used by PHP for the entire version 4 release line. It is no longer considered active, but PHP 4 is still in widespread use, so the old ZE1 documentation is preserved here exactly as it was.
All information of this service is derived from the free sources and is provided solely in the form of quotations.
This service provides information and interfaces solely for the familiarization (not ownership) and under the "as is" condition.