How to use a switch case 'or' in PHP?

switch ($value) {

case 1 || 2:
echo 'the value is either 1 or 2';
break;

}

switch ($value)
{
    case 1:
    case 2:
        echo "the value is either 1 or 2.";
    break;
}

switch (true) {
    case ($value > 3) :
        // value is greater than 3
    break;
    case ($value >= 4 && $value <= 6) :
        // value is between 4 and 6
    break;
}

switch($value) {
    case 1:
    case 2:
        echo "the value is either 1 or 2";
        break;
}

<?php
$go = $_REQUEST['go'];
?>
<?php if ($go == 'general_information'){?>
<div>
echo "hello";
}?>