slides/internals/bytecode½.xml
Byte Code
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Byte Code
AST is converted to bytecode
  • • In PHP also called Opcodes
  • • Each function, method, or main body is represented by an Oparray
  • • Each Oparray contains Opcodes with instructions for the Zend Engine
  • • The Zend Engine executes each opcode in turn
  • • Very similar to Assembler instructions
  • • You can visualize them with the PECL vld extension