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In this code challenge, we will work with a third-party library that helps us identify palindromic primes. First, at the top of the file, let’s include the third-party library. You can find it at class.palprimechecker.php in the same folder as the file below.
<?php include("class.palprimechecker.php/palprimes.php"); echo "The number ## "; echo "(is|is not)"; echo " a palprime."; ?>
The text says "You can find it at class.palprimechecker.php in the same folder as the file below.". The path that you entered in the include() statement is erroneous, because the trailing slash (/) indicates that you are trying to include the "palprimes.php" file located in the "class.palprimechecker.php" directory.
The correct way would be:
<?php include('class.palprimechecker.php'); ?>
The include() statement will try to include the file (class.palprimechecker.php) that is found in the same directory where the script (palprimes.php) is located.
I hope my explanation has helped you!
thanks, Emiliano Ceccon!