What potential issue is identified with the use of recursion in the code?

The potential issue with using recursion in code is the possibility of hitting the maximum recursion depth, causing a "Fatal error: Maximum function nesting level reached" error. This error occurs when the recursion depth exceeds the limit set in the PHP configuration file. To solve this issue, you can increase the recursion limit by adjusting the "xdebug.max_nesting_level" value in the php.ini file or rewrite the code to use an iterative approach instead of recursion.

// Increase recursion limit
ini_set('xdebug.max_nesting_level', 1000);

// Recursive function with a base case to prevent exceeding recursion depth
function recursiveFunction($num) {
    if ($num <= 0) {
        return;
    }

    echo $num . " ";

    recursiveFunction($num - 1);
}

// Test the recursive function
recursiveFunction(10);