Php/docs/internals2.opcodes.sl
来自菜鸟教程
SL
PHP code
<?php/* * Shift bits of value1 to the left value2 steps (each step means "multiply by two") * opcode number: 6 */echo 8 << 2;?>
PHP opcodes
Function name: (null)
Compiled variables: none
| line | # | op | fetch | ext | return | operands |
|---|---|---|---|---|---|---|
| 6 | 0 | SL | ~0 | 8,2 | ||
| 1 | ECHO | ~0 | ||||
| 7 | 2 | RETURN | 1 |
