how to delete item from an array with filter?

Question

I want to filter and delete an item from an array. is it possible to do it with array_filter() ?

//I want to delete these items from the $arr_codes
$id = 1223;
$pin = 35;

//Before
$arr_codes = Array('1598_9','1223_35','1245_3','1227_11', '1223_56');

//After
$arr_codes = Array('1598_9','1245_3','1227_11', '1223_56');

Thanks!

Is your criteria dynamic, or is it always $id = 1223 and $pin = 35? — Jason McCreary
– Jason McCreary, Commented May 25, 2011 at 2:05

Community · Accepted Answer · 2023-11-17 19:24:28Z

3

You can find the index of the value you are interested in with array_search and then unset it.

$i = array_search('1223_35',$arr_codes);
if($i !== false) unset($arr_codes[$i]);

edited Nov 17, 2023 at 19:24

CommunityBot

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answered May 25, 2011 at 2:03

GWW

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Community · Accepted Answer · 2023-11-21 15:10:29Z

0

array_filter does not take userdata (parameters). array_walk() does. However, none of the iterator function allow modifying the array structure within the callback.

As such, array_filter() is the appropriate function to use. However, since your comparison data is dynamic (per your comment), you're going to need another way to obtain comparison data. This could be a function, global variable, or build a quick class and set a property.

Here is an example using a function.

array_filter($arr, "my_callback");

function my_callback($val) {
  return !in_array($val, get_dynamic_codes());
}

function get_dynamic_codes() {
  // returns an array of bad codes, i.e. array('1223_35', '1234_56', ...)
}

edited Nov 21, 2023 at 15:10

CommunityBot

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answered May 25, 2011 at 2:24

Jason McCreary

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