How can the "Invalid argument supplied for foreach()" error be resolved in PHP code that does not contain a foreach loop?

The "Invalid argument supplied for foreach()" error occurs when a variable that is not an array is passed to a foreach loop in PHP code. To resolve this error, you need to ensure that the variable being passed to foreach is actually an array. One way to do this is by using the is_array() function to check if the variable is an array before using it in the foreach loop.

// Check if the variable is an array before using foreach loop
if(is_array($variable)){
    foreach($variable as $item){
        // Code to iterate over the array items
    }
} else {
    // Handle the case where $variable is not an array
}