PHP - Manual: FETCH_OBJ_R
2024-12-22
<?php
/*
* Fetch the "prop-name" property value of this object. Read-only?
* opcode number: 82
*/
$x = new A();
$a = 'x';
echo $$a->num;
?>
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 |
官方地址:https://www.php.net/manual/en/internals2.opcodes.fetch-obj-r.php