PHP Switch Statements
The switch statement is used to perform different actions based on different conditions. Use the switch statement to select one of many blocks of code to be executed.
1. Syntax
switch (n) {
case label1:
code to be executed if n=label1;
break;
case label2:
code to be executed if n=label2;
break;
case label3:
code to be executed if n=label3;
break;
default:
code to be executed if n is different from all labels;
}2. How it Works
- We have a single expression
n(most often a variable), that is evaluated once. - The value of the expression is compared with the values for each
casein the structure. - If there is a match, the block of code associated with that case is executed.
- Use
breakto prevent the code from running into the next case automatically. - The
defaultstatement is used if no match is found.
3. Example
$favcolor = "red";
switch ($favcolor) {
case "red":
echo "Your favorite color is red!";
break;
case "blue":
echo "Your favorite color is blue!";
break;
default:
echo "Your favorite color is neither red nor blue!";
}