The switch statement is similar to the series of if-else statements. The switch statement performs in various cases i.e. it has various cases to which it matches the condition and appropriately executes a particular case block. It first evaluates an expression and then compares it with the values of each case. If a case matches then the same case is executed.Â
To use the switch, we need to get familiar with two different keywords namely, break and default.
- break: The break statement is used to stop the automatic control flow into the next cases and exit from the switch case.
- default: The default statement contains the code that would execute if none of the cases match.
Flowchart of switch statement:
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Syntax:
switch(expression)
{
case val1:
// Code Statement
break;
case val2:
// Code statement
break;
...
default:
// Code Statement
}
Example 1: The following code demonstrates the switch statement.
PHP
<?phpÂ
    $x = 2;    switch ($x) {        case 1:            printf("Choice is 1");            break;        case 2:            printf("Choice is 2");            break;        case 3:            printf("Choice is 3");            break;        default:            printf("Choice other than 1, 2 and 3");                }Â
?> |
Output
Choice is 2
Example 2:
PHP
<?phpÂ
    $n='C';    switch($n)     {        case 'A':        case 'B':            printf("A and B\n");            break;                    case 'C':        case 'D':            printf("C and D\n");            break;                    default:printf("Alphabet is greater than D\n");                 }Â
?> |
Output
C and D
Reference: https://www.php.net/manual/en/control-structures.switch.php
