I'm quite used to vb.net's Select Case
syntax which is essentially a switch statement, where you can do things like Case Is > 5
and if it matches, it will execute that case.
How can I do what I'm going to call "conditional switch statements" since I don't know the actual name, in PHP?
Or, what's a quick way to manage this?
switch($test)
{
case < 0.1:
// do stuff
break;
}
That's what I've tried currently.
I think you're searching for something like this (this is not exactly what you want or at least what I understand is your need).
switch (true)
finds the cases which evaluate to a truthy value, and execute the code within until the first break; it encounters.
<?php
switch (true) {
case ($totaltime <= 1):
echo "That was fast!";
break;
case ($totaltime <= 5):
echo "Not fast!";
break;
case ($totaltime <= 10):
echo "That's slooooow";
break;
}
?>
PHP supports switch statements . Is that what you wanted?
I tried to add this as a comment to the answer by BoltCock, but SO is telling me that his answer is locked so I'll make this a separate (and essentially redundant) answer:
The "switch(true)" answer from BoltCock is much like the following example , which although logically equivalent to if + else if + else is arguably more beautiful because the conditional expressions are vertically aligned, and is standard/accepted practice in PHP.
But the if + else if + else syntax is essentially universal across scripting languages and therefore immediately readable (and maintainable) by anyone, which gives it my nod as well.
You can accomplish this in PHP 8.0+ with match statements .
If you have a single expression in your switch statement, it is equivalent to the following match statement. Note that unlike switch statements, we can choose to return a variable (in this code I am storing the result in $result
).
$test = 0.05;
$result = match (true) {
$test < 0.1 => "I'm less than 0.1",
$test < 0.01 => "I'm less than 0.01",
default => "default",
};
var_dump($result);
Match only allows you to have a single expression on the right-hand side (everything after =>
). The equivalent to switch statement with multi-line cases would be to use separate functions.
function tinyCase(){}
function veryTinyCase(){}
function defaultCase(){}
$test = 0.01;
match (true) {
$test < 0.1 => tinyCase(),
$test < 0.1 => veryTinyCase(),
default => defaultCase(),
};
And for reference, if you just want to check for equality you can do:
$result = match ($test) { // This example shows doing something other than match(true)
0.1 => "I'm equal to 0.1",
0.01 => "I'm equal to 0.01",
default => "default",
};
Match statements do have some key differences from switch statements that you need to watch out for:
===
instead of a loose one ==
.break
.Switch statement with conditions
switch(true)
{
case ($car == "Audi" || $car == "Mercedes"):
echo "German cars are amazing";
break;
case ($car == "Jaguar"):
echo "Jaguar is the best";
break;
default:
echo "$car is Ok";
}
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