PHP - Manual: SL
2024-12-22
<?php
/*
* Shift bits of value1 to the left value2 steps (each step means "multiply by two")
* opcode number: 6
*/
echo 8 << 2;
?>
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 |
官方地址:https://www.php.net/manual/en/internals2.opcodes.sl.php