PHP: Check if variable exist but also if has a value equal to something

Question

I have (or not) a variable $_GET[\'myvar\'] coming from my query string and I want to check if this variable exists and also if the value corresponds to somethi

Answer 1

Thanks Mellowsoon and Pekka, I did some research here and come up with this:

• Check and declare each variable as null (if is the case) before start to use (as recommended):

!isset($_GET['myvar']) ? $_GET['myvar'] = 0:0;

*ok this one is simple but works fine, you can start to use the variable everywhere after this line

• Using array to cover all cases:

$myvars = array( 'var1', 'var2', 'var3');
foreach($myvars as $key)
    !isset($_GET[$key]) ? $_GET[$key] =0:0;

*after that you are free to use your variables (var1, var2, var3 ... etc),

PS.: function receiving a JSON object should be better (or a simple string with separator for explode/implode);

... Better approaches are welcome :)

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UPDATE:

Use $_REQUEST instead of $_GET, this way you cover both $_GET and $_POST variables.

!isset($_REQUEST[$key]) ? $_REQUEST[$key] =0:0;