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位操作符_PHP
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位操作符允许您精细的操作数据的每一个位。
Table 7-2. Bitwise Operators（表7-2位操作符）
example name result
$a & $b And Bits that are set in both $a and $b are set.?/FONT>
$a | $b Or Bits that are set in either $a or $b are set.?/FONT>
~ $a?/FONT> Not Bits that are set in $a are not set, and vice versa.
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