php bitwise operators
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Question / Problem
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what is the output of 2^2 in PHP?
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Solution
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^ is the bit wise operator in PHP, make a expression of eXclusive OR (XOR).
for eXclusive OR, it works with binary format of decimal numbers. if any one of the bit is 1 and other is 0 then it returns 1 otherwise it returns 0.
Reference Table in bit:
A B A^B
0 0 0
0 1 1
1 0 1
1 1 0
so here 2^2 => (0010) ^ (0010) = (0000) => 0
for any same number eXclusive OR returns 0. please check this out by 3^3, 4^4.
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Applies to |
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PHP
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Rank It |
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