Manual do PHP PHP no Núcleo: Um guia do Hacker para a Zend Engine Zend Engine 2 Opcodes Opcode Descriptions and Examples BW_OR BW_NOT BW_XOR BW_OR PHP code <?php/* * Bit-wise or of value1 and value2 * opcode number: 9 */echo 1|2;?> PHP opcodes Function name: (null) Compiled variables: none line#op fetchextreturn operands 60 BW_OR ~0 1,2 1 ECHO ~0 72 RETURN 1