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How to use a switch case 'or' in PHP

People also ask

Can I use || with switch cases?

You can't use “||” in case names. But you can use multiple case names without using a break between them. The program will then jump to the respective case and then it will look for code to execute until it finds a “break”. As a result these cases will share the same code.

What is the use of switch-case in PHP?

What Is the Use of the Switch Statement? In PHP, the switch statement is considered as an alternative to if-elseif-else statements. More often than not, you want to compare a variable with different values, and based on that you want to execute a piece of code.

Can I use switch in PHP?

PHP allows you to use number, character, string, as well as functions in switch expression. Nesting of switch statements is allowed, but it makes the program more complex and less readable.

Can we use condition in switch-case PHP?

PHP doesn't support this syntax. Only scalar values allowed for cases.


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

This is called "falling through" the case block. The term exists in most languages implementing a switch statement.


If you must use || with switch then you can try :

$v = 1;
switch (true) {
    case ($v == 1 || $v == 2):
        echo 'the value is either 1 or 2';
        break;
}

If not your preferred solution would have been

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

The issue is that both method is not efficient when dealing with large cases ... imagine 1 to 100 this would work perfectly

$r1 = range(1, 100);
$r2 = range(100, 200);
$v = 76;
switch (true) {
    case in_array($v, $r1) :
        echo 'the value is in range 1 to 100';
        break;
    case in_array($v, $r2) :
        echo 'the value is in range 100 to 200';
        break;
}

I won't repost the other answers because they're all correct, but I'll just add that you can't use switch for more "complicated" statements, eg: to test if a value is "greater than 3", "between 4 and 6", etc. If you need to do something like that, stick to using if statements, or if there's a particularly strong need for switch then it's possible to use it back to front:

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

but as I said, I'd personally use an if statement there.


Try with these following examples in this article : http://phpswitch.com/

Possible Switch Cases :

(i). A simple switch statement

The switch statement is wondrous and magic. It's a piece of the language that allows you to select between different options for a value, and run different pieces of code depending on which value is set.

Each possible option is given by a case in the switch statement.

Example :

switch($bar)
{
    case 4:
        echo "This is not the number you're looking for.\n";
        $foo = 92;
}

(ii). Delimiting code blocks

The major caveat of switch is that each case will run on into the next one, unless you stop it with break. If the simple case above is extended to cover case 5:

Example :

case 4:
    echo "This is not the number you're looking for.\n";
    $foo = 92;
    break;

case 5:
    echo "A copy of Ringworld is on its way to you!\n";
    $foo = 34;
    break;

(iii). Using fallthrough for multiple cases

Because switch will keep running code until it finds a break, it's easy enough to take the concept of fallthrough and run the same code for more than one case:

Example :

case 2:

case 3:
case 4:
    echo "This is not the number you're looking for.\n";
    $foo = 92;
    break;

case 5:
    echo "A copy of Ringworld is on its way to you!\n";
    $foo = 34;
    break;

(iv). Advanced switching: Condition cases

PHP's switch doesn't just allow you to switch on the value of a particular variable: you can use any expression as one of the cases, as long as it gives a value for the case to use. As an example, here's a simple validator written using switch:

Example :

switch(true)
{
    case (strlen($foo) > 30):
        $error = "The value provided is too long.";
    $valid = false;
    break;

    case (!preg_match('/^[A-Z0-9]+$/i', $foo)):
        $error = "The value must be alphanumeric.";
    $valid = false;
    break;

    default:
    $valid = true;
    break;
}

i think this may help you to resolve your problem.


Try

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

I suggest you to go through switch (manual).

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

Explanation

Like for the value you want to execute a single statement for, you can put it without a break as as until or unless break is found. It will go on executing the code and if a break found, it will come out of the switch case.