switch

continue
November 14, 2018
require
November 14, 2018

The switch statement is similar to a series of IF statements on the same expression. In many occasions, you may want to compare the same variable (or expression) with many different values, and execute a different piece of code depending on which value it equals to. This is exactly what the switch statement is for.

Note: Note that unlike some other languages, the continue statement applies to switch and acts similar to break. If you have a switch inside a loop and wish to continue to the next iteration of the outer loop, use continue 2.

Note:

Note that switch/case does loose comparison.

Changelog
Version Description
7.0.0 Multiple default cases will raise a E_COMPILE_ERROR error.
The following two examples are two different ways to write the same thing, one using a series of if and elseif statements, and the other using the switch statement:

Example #1 switch structure

<?php
if ($i == 0) {
echo “i equals 0”;
} elseif ($i == 1) {
echo “i equals 1”;
} elseif ($i == 2) {
echo “i equals 2”;
}

switch ($i) {
case 0:
echo “i equals 0”;
break;
case 1:
echo “i equals 1”;
break;
case 2:
echo “i equals 2”;
break;
}
?>
Example #2 switch structure allows usage of strings

<?php
switch ($i) {
case “apple”:
echo “i is apple”;
break;
case “bar”:
echo “i is bar”;
break;
case “cake”:
echo “i is cake”;
break;
}
?>

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