Question

If I get an integer variable (anywhere from 0+) There are a few things I can do to make sure the number is not 0(zero):

• Option 1:

  if($number > 0){
      // number is not zero
  }
  

• Option 2:

  if($number){
      // number is not zero
  }
  

• Option 3:

  if((bool) $number){
      // number is not zero
  }
  

• Option 4:

  if(!!$number){
      // number is not zero
  }
  

• Etcetera….

Which one of the above is considered really the best to do?
Or is there an even better option?

Answer 1

Use the identical comparison operaton, which does not do any type juggling (and is faster).

if ($number !== 0) {
 //         ^^^
 // Number is not identical to 0
}

Note: This is assuming the variable is actually a “integer variable”, and not a string that happens to contain a number.

if (false == ($number === 0)) {
 //                   ^^^
 // It is false that Number is identical to 0
}