Opcode Descriptions and Examples
PHP 手册

PRINT

PHP code

<?php
/*
 * 
 * opcode number: 41
 */
print "Hello World";
?>

PHP opcodes

Function name: (null)

Compiled variables: none

line#op fetchextreturn operands
60 PRINT   ~0 'Hello+World'
 1 FREE     ~0
72 RETURN     1

Opcode Descriptions and Examples
PHP 手册