Internals2/opcodes/fetch-obj-r-Phpdoc专题
FETCH_OBJ_R
PHP code
<?php
/*
* Fetch the "prop-name" property value of this object. Read-only?
* opcode number: 82
*/
$x = new A();
$a = 'x';
echo $$a->num;
?>PHP opcodes
Function name: (null)
Compiled variables: !0=$x, !1=$a
| line | # | op | fetch | ext | return | operands |
|---|---|---|---|---|---|---|
| 6 | 0 | ZEND_FETCH_CLASS | :0 | 'A' | ||
| 1 | NEW | $1 | :0 | |||
| 2 | DO_FCALL_BY_NAME | 0 | ||||
| 3 | ASSIGN | !0,$1 | ||||
| 7 | 4 | ASSIGN | !1,'x' | |||
| 8 | 5 | FETCH_R | local | $5 | !1 | |
| 6 | FETCH_OBJ_R | $6 | $5,'num' | |||
| 7 | ECHO | $6 | ||||
| 9 | 8 | RETURN | 1 |