PHP join two variable names

Question

I have a php script that gets a $_POST to decide which array to return. Ex:

$n = $_POST['n']; // 1, 2 or 3

$a1 = array ('something', 'something else', 'another thing');

$a2 = array ('something 2', 'something else 2', 'another thing 2');

$a3 = array ('something 3', 'something else 3', 'another thing 3');

now I want to get the array that corresponds to the $n value, let's say "2".

How can I say echo $a . $n to get $a2

Thanks.

xdazz · Accepted Answer · 2013-06-13 01:27:44Z

22

${'a'.$n} gives you $a2 if $n is 2.

edited Jun 13, 2013 at 1:27

answered Sep 1, 2011 at 6:31

xdazz

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Comments

Ernestas Stankevičius · Accepted Answer · 2011-09-01 06:30:39Z

4

It would be better that you make as this:

$a = array();

$a[1] = array('bla bla', 'bla bla');
$a[2] = array('asdasd', 'asdasd');

And then you can call as this:

echo $a[intval($n)]

answered Sep 1, 2011 at 6:30

Ernestas Stankevičius

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1 Comment

Raptor Over a year ago

+1 : use array to store a series of arrays is better than use few variables.

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