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<?php var_dump(ZEND_DEBUG_BUILD); var_dump(PHP_DEBUG);
Output for 5.3.0 - 7.1.0
bool(false) int(0)
Output for 5.2.7 - 5.2.17
Notice: Use of undefined constant ZEND_DEBUG_BUILD - assumed 'ZEND_DEBUG_BUILD' in /in/FA7Fk on line 2 string(16) "ZEND_DEBUG_BUILD" int(0)
Output for 4.3.0 - 5.2.6
Notice: Use of undefined constant ZEND_DEBUG_BUILD - assumed 'ZEND_DEBUG_BUILD' in /in/FA7Fk on line 2 string(16) "ZEND_DEBUG_BUILD" Notice: Use of undefined constant PHP_DEBUG - assumed 'PHP_DEBUG' in /in/FA7Fk on line 3 string(9) "PHP_DEBUG"