Undefined Offset multidimensional array Laravel

Question

I just can't get this array to play nice. I'm using Laravel 4.2 and am throwing: ErrorException (E_UNKNOWN) Undefined offset: 1

$tags = Test\Zero::get_tags();

dd ($tags);

    array (size=2)
  0 => 
    array (size=4)
      'guid' => string '-a035-4742-bb65-c44' (length=36)
      'name' => string 'tagtest1' (length=9)
      'updateSequenceNum' => int 14
      'parentGuid' => null
  1 => 
    array (size=4)
      'guid' => string '-905e-466e-9e91-33ddggg4' (length=36)
      'name' => string 'testtag2' (length=11)
      'updateSequenceNum' => int 19
      'parentGuid' => null

$tags = array_dot(`$tags);


array (size=8)
  '0.guid' => string '-a035-4742-bb65-c44' (length=36)
  '0.name' => string 'tagtest1' (length=9)
  '0.updateSequenceNum' => int 14
  '0.parentGuid' => null
  '1.guid' => string '-905e-466e-9e91-33ddggg4' (length=36)
  '1.name' => string 'testtag2' (length=11)
  '1.updateSequenceNum' => int 19
  '1.parentGuid' => null


$name = array_fetch($tags, '1.name');
echo $name;

How can I loop through to display all values with key 'name' ? Everything I try gives ErrorException (E_UNKNOWN) Undefined offset:

Any help would be greatly appreciated.

A simple loop like foreach ($tags as $tag) { echo $tag['name']; } will do - if you have PHP5.5, you can also use $names = array_column($tags, 'name'); to retrieve an array of all the names us1.php.net/manual/en/function.array-column.php Is that what you are looking for? — Michael Berkowski
– Michael Berkowski, Commented Sep 16, 2014 at 1:24
How bizarre - thought had tried that - it works - Thankyou!! — Zeb99
– Zeb99, Commented Sep 16, 2014 at 1:30

tptcat · Accepted Answer · 2014-09-16 01:54:02Z

1

While @MichaelBerkowski is correct, if you did want to do this with Laravel array helpers, it would be:

$names = array_fetch($tags, 'name');

which would give you an array, not a string (so having echo $name like in your example would give you an Array to string conversion error).

You may be confusing the syntax you were attempting for when you have a multidimensional associate array as in the Laravel docs for array_fetch: http://laravel.com/docs/helpers

Incidentally, if $tags was a Collection, you could do: $tags->lists('name');

answered Sep 16, 2014 at 1:54

tptcat

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1 Comment

Zeb99 Over a year ago

Yes I did initially get the array to string error - the collections class looks useful - thanks for advice

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