<?php
$abc = 'ok';
$php = 'php';
echo "$php";
?>
qiufeng@ubuntu:~/tmp/php$ php -dvld.active=1 test.php
Finding entry points
Branch analysis from position: 0
Return found
filename: /home/qiufeng/tmp/php/test.php
function name: (null)
number of ops: 4
compiled vars: !0 = $abc, !1 = $php
line # * op fetch ext return operands
---------------------------------------------------------------------------------
2 0 > ASSIGN !0, 'ok'
3 1 ASSIGN !1, 'php'
4 2 ECHO !1
6 3 > RETURN 1
branch: # 0; line: 2- 6; sop: 0; eop: 3
path #1: 0,
ADD_VAR
PHP code
<?php
/*
* add contents of variable in value2 to string value1 and store in result
* opcode number: 56
*/
echo "hello$a world";
?>
PHP opcodes
Function name: (null)
Compiled variables: !0=$a
| line | # | op | fetch | ext | return | operands |
|---|---|---|---|---|---|---|
| 6 | 0 | ADD_STRING | ~0 | 'hello' | ||
| 1 | ADD_VAR | ~0 | ~0,!0 | |||
| 2 | ADD_STRING | ~0 | ~0,'+world' | |||
| 3 | ECHO | ~0 | ||||
| 7 | 4 | RETURN | 1 |
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User Contributed Notes 1 note
fengdingbo at gmail dot com ¶
10 years ago
