Check if key exists in smarty array

Question

I have an array that looks like this:

array(
    'name1' => array('city1', 'city2', 'city3'),
    'name2' => array('city1', 'city4'),
    'namen' => array('city1', 'city7', 'cityn')
);

Which is passed to smarty as : $my_names There is a loop in my Smarty template that looks like this:

{{foreach from=$names item=name}}
  {{foreach from=$cities item=city}}
  //Check if name1 exist and after check if the city is in the array for that name
  {{/foreach}}
{{/foreach}}

I fail to see how would I use the $name and $city to access the array $my_names

I have tried doing if($my_names.$name.$city), but it doesn't work.

unable to understand. you have passed array in $my_names and using $names in smarty. Moreover, whats $cities? — Bhavik Shah, Jan 17 '13 at 15:05
Did You try `{{if $my_names.$name.$city neq NULL}} do stuff here {{/if}}` ? — shadyyx, Jan 17 '13 at 15:16

score 21 · Answer 1 · edited Nov 11 '16 at 07:54

21

This notation will work too :

{if 'needle'|array_key_exists:$haystack}
....
{/if}

edited Nov 11 '16 at 07:54

Lucas

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answered Jun 13 '13 at 15:29

Brice Favre

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score 13 · Answer 2 · answered Feb 06 '13 at 11:54

13

You can use the array_key_exists() function to check whether the key is in the array.

{if array_key_exists('needle', $haystack)} 
    DoSomethingAboutIt 
{/if}

answered Feb 06 '13 at 11:54

Daniël W. Crompton

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Check if key exists in smarty array

2 Answers2