Php/docs/internals2.opcodes.fetch-w
来自菜鸟教程
FETCH_W
PHP code
<?php/* * Fetch the value of the varible of "name" to assign it to a variable? Write-only? * opcode number: 83 */$x = 1;$a = 'x';$$a = 2;?>
PHP opcodes
Function name: (null)
Compiled variables: !0=$x, !1=$a
| line | # | op | fetch | ext | return | operands |
|---|---|---|---|---|---|---|
| 6 | 0 | ASSIGN | !0,1 | |||
| 7 | 1 | ASSIGN | !1,'x' | |||
| 8 | 2 | FETCH_W | local | $2 | !1 | |
| 3 | ASSIGN | $2,2 | ||||
| 9 | 4 | RETURN | 1 |
