[iheartbreakz]

Can anyone tell me the difference between these 2 functions

if($this->itemCount <= 0) and if($this->itemCount = 0)

both of them are giving me different results but wouldn't <= 0 and = 0 mean the same thing?

[macosxnerd101]

The = operator is for assignments, and the == operator is for comparisons. Mathematically, less than or equal to has a different meaning than equal to. The meanings are pretty obvious.

[iheartbreakz]

yea i knew that but my question is wouldnt <= mean less than OR equal to?

[macosxnerd101]

Yes, that is correct.

[JackOfAllTrades]

if($this->itemCount <= 0) and if($this->itemCount = 0)

That code is not even valid code.

[creativecoding]

What part about that isn't valid code?

[Atli]

The and would be invalid in that position, although I suspect that was more for our benefit than meant to represent actual code.

[iheartbreakz]

lol i asked it as a question ... shoulda put 2 [code] tags there.. sorry

[xclite]

iheartbreakz, on 21 September 2012 - 06:53 PM, said:

yea i knew that but my question is wouldnt <= mean less than OR equal to?

What macosxnerd101 is saying is that your second condition will always have the same result, because it sets the value to 0. It has the same result as writing

$this->itemCount = 0
if ($this->itemCount)

While the first actually compares the value, which will return true or false depending on whether the value is less than or equal to 0 or greater than 0.