How can the use of switch statements in PHP lead to errors, as seen in the code example provided?

Switch statements in PHP can lead to errors if the cases do not cover all possible values or if there is a missing `break` statement at the end of a case block. To solve this issue, always include a `default` case to handle unexpected values and ensure that each case block ends with a `break` statement to prevent fall-through behavior. 

$day = "Monday";

switch ($day) {
    case "Monday":
        echo "Today is Monday.";
        break;
    case "Tuesday":
        echo "Today is Tuesday.";
        break;
    default:
        echo "Invalid day.";
}

Keywords

switch statements PHP errors code example logic bugs

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