adding an element to multidimensional array when within foreach loop (PHP)

Question

I'm trying to check if a certain category is allready selected by looping through an array of categories also I want to add another element to the array whci is just a bit to indicate is the category selcated

my categories array looks like this

0=>array(category_id=>12,category_name=>"blogger")  
1=>array(category_id=>13,category_name=>"dancer")

etc...
now the code i'm trying goes like that:

foreach ($userCategories as $key=>$category) {
    if($category['category_id'] == $mediaDetails['currentCategory']) {
        $category['current'] = 1;
    } else {
        $category['current'] = 0;
    }
}

when executing

die(var_dump($userCategories));

I expect to get an array similar to

0=>array(category_id=>12,category_name=>"blogger",current=>0)  
1=>array(category_id=>13,category_name=>"dancer",current=>1)

but instead I get the same array I had before the foreach loop

any ideas?

Thanks

zebediah49 · Accepted Answer · 2010-06-23 21:34:44Z

11

It looks like $category is not getting passed by reference.

Try $userCategories[$key]['current']=1 instead, and see how that works.

answered Jun 23, 2010 at 21:34

zebediah49

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4 Comments

svens Over a year ago

Or fix the foreach foreach ($userCategories as $key=>&$category) { (note the &)

zebediah49 Over a year ago

Right; I thought of that but wasn't positive that it would work properly in a foreach.

gawpertron Over a year ago

I thought that using the ampersand was deprecated? but I did a little test, but I didn't get any warnings php.net/manual/en/language.references.pass.php

RobW Over a year ago

I think & is only deprecated when you try to pass an argument as a reference when the function originally does not pass the argument as a reference.

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