gmp_clrbit
(PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8)
gmp_clrbit — Clear bit
說明
Clears (sets to 0) bit index in
num. The index starts at 0.
參數
-
num -
GMP 對像或 int ，或數字string。
-
index -
The index of the bit to clear. Index 0 represents the least significant bit.
返回值
GMP 對象。
範例
示例 #1 gmp_clrbit() example
<?php
$a = gmp_init("0xff");
gmp_clrbit($a, 0); // index starts at 0, least significant bit
echo gmp_strval($a) . "\n";
?>
以上例程會輸出：
254
註釋
注意:
Unlike most of the other GMP functions, gmp_clrbit() must be called with a GMP object that already exists (using gmp_init() for example). One will not be automatically created.