Internals2/opcodes/jmpz-Phpdoc专题
JMPZ
PHP code
<?php
/*
* Jump to the address if the value is zero
* opcode number: 43
*/
if($a != 0) echo "foo";
?>PHP opcodes
Function name: (null)
Compiled variables: !0=$a
| line | # | op | fetch | ext | return | operands |
|---|---|---|---|---|---|---|
| 6 | 0 | IS_NOT_EQUAL | ~0 | !0,0 | ||
| 1 | JMPZ | ~0,->4 | ||||
| 2 | ECHO | 'foo' | ||||
| 3 | JMP | ->4 | ||||
| 7 | 4 | RETURN | 1 |