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| Switch |
Switch
In PHP, the Switch statement is very similar to the Javascript Switch statement (See the Javascript Switch Guide to compare and contrast). It allows rapid case testing with a lot of different possible conditions, the code is also more readable.
Syntax
<?php
// Switch Statement Example
switch ($i) {
case "free":
echo "i is free";
break;
case "code":
echo "i is code";
break;
case "camp":
echo "i is camp";
break;
default:
echo "i is freecodecamp";
break;
}
Break
The break; statement exits the switch and goes on to run the rest of the application's code. If you do not use the break; statement you may end up running mulitple cases and statements, sometimes this may be desired in which case you should not include the break; statement.
An example of this behavior can be seen below:
<?php
$j = 0
switch ($i) {
case '2':
$j++;
case '1':
$j++;
break;
default:
break;
}
If $i = 1, the value of $j would be:
1
If $i = 2, the value of $j would be:
2
While break can be omitted without causing fall-through in some instances (see below), it is generally best practice to include it for legibility and safety (see below):
<?php
switch ($i) {
case '1':
return 1;
case '2':
return 2;
default:
break;
}
<?php
switch ($i) {
case '1':
return 1;
break;
case '2':
return 2;
break;
default:
break;
}