What correction was suggested by another forum user regarding the switch statement in the PHP code?

The issue with the switch statement in the PHP code is that the "case" statements are missing the colon ":" at the end. To correct this, we need to add a colon after each "case" statement.

switch ($variable) {
    case 'value1':
        // code block
        break;
    case 'value2':
        // code block
        break;
    default:
        // default code block
        break;
}