PHP vs JavaScript, Bitwise Operators

Question

I have a function in JavaScript:

function myFunc(a, b, c)
{
  return (a ^ (b | (~c)));
}

And Equivalent in PHP:

function myFunc($a, $b, $c)
{
    return ($a ^ ($b | (~$c)));
}

The result for them are not the same:

myFunc('123', '4434', '355'); // PHP = ��� (Unknown Characters)
myFunc('123', '4434', '355'); // JavaScript = -91

What is wrong here?

From the manual: if the operands are strings, then the operation will be performed on the ASCII values of the characters that make up the strings — Barmar
– Barmar, Commented May 24, 2015 at 12:43

Federkun · Accepted Answer · 2015-05-24 12:37:40Z

2

In PHP you need to cast manually to integer

function myFunc($a, $b, $c)
{
    return ((int)$a ^ ((int)$b | (~(int)$c)));
}

answered May 24, 2015 at 12:37

Federkun

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