PHP - 不是运算符，还是其他任何别名？

Question

if(!($whatever && what()) do_stuff...

Can this be replaced with something more intuitive like:

if(not($whatever && what()) do_stuff...

?

Answer 1

function not($OriginalCheck)
{
    return !$OriginalCheck;
}

function is($OriginalCheck)
{
    return !!$OriginalCheck;
}

should do exactly that :)

There are several ways to write checks:

• if(!($whatever && what()) do_stuff...
• if(!$whatever || !what()) do_stuff...
• if(($whatever && what()) === false) do_stuff...
• if((!$whatever || !what()) === true) do_stuff...
• if($whatever === false || what() === false) === true) do_stuff...

all these ways are intuitive and known through out the programming world.