What are some best practices for handling errors like "Warning: Invalid argument supplied for foreach()" in PHP scripts?

When encountering the "Warning: Invalid argument supplied for foreach()" error in PHP scripts, it means that the argument passed to the foreach loop is not an array. To solve this issue, you should always check if the argument is an array before using it in a foreach loop.

// Check if the argument is an array before using foreach
if(is_array($your_argument_here)) {
    foreach($your_argument_here as $item) {
        // Loop through the array
    }
} else {
    // Handle the case where the argument is not an array
    echo "Invalid argument supplied for foreach";
}