[SOLVED] need syntax format

[kucing]

Hi all..

 

I am having problem with proper syntax format.

 

If i am not mistaken this syntax is right

$myVar[$i]["var"] = ($a>1?$a=true:a=false);

 

but when i try to make some change like this

$myVar[$i]["var"] = (($a>1?$a=true:a=false)?$b=true:b=false);

 

it doesn't seems to work

As I want something like when the first parameter is true then the next parameter should work.

 

Thanks

I appreciate your help

 

[Jessica]

I don't think either is right. I'm not too familiar with the ternary, but I think it needs to be like this:

$myVar[$i]["var"] = ($a>1?true:false);

 

$a=true and $a=false will both return true, so in your first one it will always be true, because you get the value of that operation.

Check out the example on this page:

http://us2.php.net/ternary

Example 15.3. Assigning a default value

 

And this one:

Note:  Is is recommended that you avoid "stacking" ternary expressions. PHP's behaviour when using more than one ternary operator within a single statement is non-obvious:

Example 15.4. Non-obvious Ternary Behaviour

[JBS103]

I would also just consider using an if statement, especially since you are trying to set 3 different variables at once ($a, $b, $myVar). Someone might be able to clarify, but I believe the ternary is generally used to set the outside variable. For example, in this case, it is checking $a and then setting $myVar.

 

<?php
$a = 0;
$myVar = ($a > 1) ? true : false;
echo $myVar; //Displays nothing
?>

 

 

 

[itsmeArry]

use this

 

$myVar = ($a > 1) ? 'true' : 'false';

[trq]

use this

 

$myVar = ($a > 1) ? 'true' : 'false';

 

Still, if the op wants to set $myVar to a booleen....

 

$myVar = ($a > 1) ? true : false;

 

is correct.

[monk.e.boy]

use this

 

$myVar = ($a > 1) ? 'true' : 'false';

 

Still, if the op wants to set $myVar to a booleen....

 

$myVar = ($a > 1) ? true : false;

 

is correct.

 

$myVar = ($a > 1);

 

Wouldn't this do the same?

 

monk.e.boy

[obsidian]

$myVar = ($a > 1);

 

Wouldn't this do the same?

 

monk.e.boy

 

Actually, no. I just tried it because you piqued my interest, but that method only assigns a value to $myVar upon a TRUE comparison. It would be much safer the way thorpe shows.

[trq]

Wouldn't this do the same?

 

Yes.

[trq]

but that method only assigns a value to $myVar upon a TRUE

 

Yes but no value is also the booleen FALSE.

[obsidian]

but that method only assigns a value to $myVar upon a TRUE

 

Yes but no value is also the booleen FALSE.

 

True, but typically when you echo the boolean FALSE, it prints as a '0' so you know you have the value stored. This does not.

[itsmeArry]

but that method only assigns a value to $myVar upon a TRUE

 

Yes but no value is also the booleen FALSE.

 

yes thats true...