Manual de PHP El núcleo de PHP: Guía del Hacker Zend Engine 2 Opcodes Opcode Descriptions and Examples BW_XOR BW_OR CASE BW_XOR PHP code <?php/* * Bit-wise xor of value1 and value2 * opcode number: 11 */echo 1^2;?> PHP opcodes Function name: (null) Compiled variables: none line#op fetchextreturn operands 60 BW_XOR ~0 1,2 1 ECHO ~0 72 RETURN 1