What is dynamic inheritance? aka PHP's hardest to understand concept Warning: include(): Dynamic inheritance detected for class child2 in /var/www/indexB.php on line 2 Warning: include(): Autofiltering c2.php in /var/www/indexB.php on line 2 Warning: include(): Recompiling /var/www/c2.php in /var/www/indexB.php on line 2 If indexB is hit first line # * op fetch ext return operands --------------------------------------------------------------------------------- 2 0 > SEND_VAL 'MyParent' 1 DO_FCALL 1 $0 'class_exists' 2 BOOL_NOT ~1 $0 3 > JMPZ ~1, ->6 4 > INCLUDE_OR_EVAL 'p2.php', INCLUDE 5 > JMP ->6 3 6 > ZEND_FETCH_CLASS :3 'MyParent' 7 ZEND_DECLARE_INHERITED_CLASS '%00child2%2Fvar%2Fwww%2Fc3.php0x7f7a5af32054', 'child2' 8 8 > RETURN 1 If indexA is hit first line # * op fetch ext return operands ----------------------------------------------------------------------------- 2 0 > SEND_VAL 'MyParent' 1 DO_FCALL 1 $0 'class_exists' 2 BOOL_NOT ~1 $0 3 > JMPZ ~1, ->6 4 > INCLUDE_OR_EVAL 'p2.php', INCLUDE 5 > JMP ->6 3 6 > NOP 7 NOP 8 8 > RETURN 1