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.
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:
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 $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" );
}
?> |
Choice is 2
Example 2:
<?php $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" );
}
?> |
C and D
Reference: https://www.php.net/manual/en/control-structures.switch.php