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1 Vara ( it's Not VAR) = 7.7sq feet.
To print a particular value in PHP you have to select which variable you wish to print. Below is an example of how this can be done. <?php $var[1] = "Hello"; $var[2] = "Lalala"; print $var[2]; // prints Lalala but not Hello ?>
4860 square feet.
isset( $var ) is a PHP function which returns TRUE or FALSE depending on whether a specified $var has been assigned to any value (or, initialized).
A double dollar sign in php makes a variable with a name equal to the value of the original variable. It works like this:$var = "keith";$$var = "palmer";print ($keith);// The output is: palmer