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Hi all.

$testbox = isset($_POST['testbox'])?$_POST['testbox']:null;

I was looking for answer at php tutorial, but unsuccessful.
I need to know what the "?" and the ":" are and how they work.
Greatly appreciated.

?: is called a ternary operator. Its basically an inline if/else statement.

$testbox = isset($_POST['testbox'])?$_POST['testbox']:null;

The above the is the same as

if(isset($_POST['textbox'])) {
    $textarea = $_POST['textbox'];
} else {
    $textarea = null;
}

For more info head over to the manual here -> [php.net]
Scroll down to the ternary operator bit.

This is like an "if then" statement in shorthand.

If $_POST['testbox'] exists, then $testbox = that variable. Otherwise $testbox is null.

This is PHP'S ternary operator.

sample code would be

if ($x==$y)
                     {  $result = 'true';} 
    else 
                    {   $result = 'false';}

which you could write shorter using a ternary operator.

$result = ($x==$y)  ? 'true' :  'false';

Steven Martin
stevenmartin99@gmail.com
stevenmartin99@hotmail.com
PampServer.com - [pampserver.com]