How can the error "First argument should be an array" in array_push be resolved in PHP?

The error "First argument should be an array" in array_push occurs when the first argument passed to the function is not an array. To resolve this issue, ensure that the first argument is indeed an array before calling array_push. You can use the is_array() function to check if the variable is an array before pushing elements into it.

// Check if the variable is an array before using array_push
if (is_array($myArray)) {
    array_push($myArray, "element");
} else {
    $myArray = array("element");
}