How to remove index from array in PHP?

Question

Suppose I have such an array in php:

$ray =

Array
(
    [0] => Array
        (
            [id] => 1
            [0] => 1
            [ip] => 127.0.0.1
            [1] => 127.0.0.1
            [username] => local_me
            [2] => local_me
            [last_visit] => 2013-05-17 02:12:07
            [3] => 2013-05-17 02:12:07
        )

    [1] => Array
        (
            [id] => 2
            [0] => 2
            [ip] => 127.2.2.3
            [1] => 127.2.2.3
            [username] => Anonymous42
            [2] => Anonymous42
            [last_visit] => 2013-05-16 16:07:46
            [3] => 2013-05-16 16:07:46
        )

)

And I want to remove the ip (and '1' also) "column" for all elements of this array. How can I do this?

thanks !

Mark Parnell · Accepted Answer · 2013-05-17 00:32:46Z

4

foreach ($ray as &$item)
    unset($item['ip'],$item[1]);

answered May 17, 2013 at 0:32

Mark Parnell

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2 Comments

Luis Over a year ago

@Mark Parnell, why did you use '&' at '&$item'?

Mark Parnell Over a year ago

To pass the item by reference so it updates the original array.

Community · Accepted Answer · 2023-11-14 22:24:31Z

1

This question was asked before here: PHP Remove elements from associative array

It's really simple to remove a key from an array, just use unset method.

foreach($ray as $key => $value){
   if(array_key_exists('id', $value){
      unset($ray[$key]['id'];
   }
   elseif(array_key_exists('1', $value){
      unset($ray[$key]['1'];
   }
}

Of course, there are few more options to do that more efficiently, I just try give an example.

edited Nov 14, 2023 at 22:24

CommunityBot

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answered May 17, 2013 at 0:42

Eduardo M

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1 Comment

void Over a year ago

Thanks ! But the definition of simple, for me, is "less lines of code", and I was trying to find (if exists) a function directly does that. Thanks for your effort, though !

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