CODEWITHSUNDEEP
phparraysvariables
Paul Duncan
Paul Duncan

Reputation: 322

PHP; Manipulation of Multiple Variables on Single Line?

Basic question really, I know I can do this in some other languages but I dont know PHP that well, hoping someone can help.

So I have the following. 

$holyToT *=100;
$coldToT *=100;
$fireToT *=100;
$poisonToT *=100;
$lightningToT *=100;

And I want to be able to just condense it down to something like:

$holyToT, $coldToT, $fireToT, $poisonToT, $lightningToT *= 100;

Does PHP have an internal way of doing something similar?

Upvotes: 1

Views: 129

Answers (3)

ZoolWay
ZoolWay

Reputation: 5505

There is ni build in functionality. Depending on the PHP Version you could pass an array and a lambda function to a custom function. 

function performOnAll(array $a, $fct) { 
    foreach($a as $v) $fct(&$a); 
} 

performOnAll(array($a, $b, ...), function(&$a) { $a *= 100; });

That's it basically (not syntax checked).

Upvotes: 1

Jon
Jon

Reputation: 437424

There is no syntax that allows you to do exactly this in a single statement.

You could cook up ways of doing this (by pushing everything inside an array), but the result would be much less clear and performant than a group of assignments.

Something like this comes to mind, but if they catch you doing this don't say you heard it from me:

extract(array_map(
    function($i) { return $i * 100; },
    compact('holyToT', 'coldToT', 'fireToT' /*, ... */ )
));

Upvotes: 2

Sarthaz
Sarthaz

Reputation: 128

I agree with the others, but if you really want to have it in one line, you could do something like this:

list($holyToT, $coldToT, $fireToT, $poisonToT, $lightningToT) = array_map(function($x) { return $x*100;}, array($holyToT, $coldToT, $fireToT, $poisonToT, $lightningToT));

Upvotes: 2

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