(PHP 4, PHP 5)
zend_version — Gets the version of the current Zend engine
Returns a string containing the version of the currently running Zend Engine.
Returns the Zend Engine version number, as a string.
Example #1 zend_version() example
<?php
echo "Zend engine version: " . zend_version();
?>
以上例程的输出类似于：
Zend engine version: 2.2.0