The Switch Construct
The switch construct compares the value of a variable with a series of values and executes the corresponding code block. If no values match, default code can be executed. Each code block must end with a break statement to prevent execution of subsequent blocks.
Syntax
switch ($variable) {
case value1:
// code to execute
break;
case value2:
// code to execute
break;
default:
// default code
}
Example
A simple example of using switch to determine the day of the week:
<?php
$day = 3;
switch ($day) {
case 1:
echo 'Monday';
break;
case 2:
echo 'Tuesday';
break;
case 3:
echo 'Wednesday';
break;
default:
echo 'Invalid day';
}
?>
Code execution result:
'Wednesday'
Example
Example with multiple case statements for one code block:
<?php
$grade = 'B';
switch ($grade) {
case 'A':
case 'B':
echo 'Well done!';
break;
case 'C':
echo 'Good';
break;
default:
echo 'Try again';
}
?>
Code execution result:
'Well done!'
