Can you set a variable in php to false?

Question

Can this code be correct:

if($jack = "Not tall"){

$jack = FALSE;

}
if(!jack){do whatever;}

S.A · Accepted Answer · 2016-02-28T07:58:40.030

3

When you want to compare values, make sure to have == for "is equal to", or != "is not equal to". When you have one = then you are setting the variable and will always evaluate as true. PHP Comparison Operators

if($jack == "Not tall"){
  $jack = FALSE;
}
if(!$jack){
  // do whatever ...
}

And when dealing with variables, always make sure you have the $ in the front. This is very basic php stuff.

edited Feb 28 '16 at 07:58

answered Feb 28 '16 at 07:53

S.A

568
2
13

1

I forgot to add the $. But you answered my question thanks. – Dre_Dre Feb 28 '16 at 08:06

score 0 · Answer 2 · answered Feb 28 '16 at 08:07

setting a value in if statement always return true because it will return current value.

echo ($jack = "Not tall")

it will print "Not tall" so it will return true

$jack = FALSE;

it will always set false.

if($jack == "Not tall")
  $jack = FALSE;
if(!jack){do whatever;}

Differences between the Equality operator (==) and the Assignment operator (=)

Can you set a variable in php to false?

2 Answers2