php教程

FETCH_CONSTANT

PHP code

<?php
/*
 * Fetch the constant value bound to the specified name (name) and stores it into a variable (result).
 * opcode number: 99
 */
define("FOO""something");
echo 
FOO;
?>

PHP opcodes

Function name: (null)

Compiled variables: none

line#op fetchextreturn operands
60 SEND_VAL     'FOO'
 1 SEND_VAL     'something'
 2 DO_FCALL  2  'define'
73 FETCH_CONSTANT   ~1 'FOO'
 4 ECHO     ~1
85 RETURN     1

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