Comments on: PHP – Delete selected items from an array

By: web development

web development — Wed, 23 Jun 2010 08:49:35 +0000

very helpful post! thanks!

By: Ben Althauser

Ben Althauser — Wed, 16 Sep 2009 17:10:45 +0000

with an edit from the php array_dif example, here’s a nice comparison and removal script,

“green”, “red”, “blue”, “red”, “purple”);
$array2 = array(“b” => “green”, “yellow”, “red”);
$result = array_diff($array1, $array2);
$myray[] = implode(“,”,$result);
echo implode(“,”,$myray);
?>

By: Mike

Mike — Fri, 28 Aug 2009 16:02:19 +0000

I have used unset() on an array element to remove the element.

I like your solution!

By: Cool

Cool — Thu, 30 Jul 2009 16:40:01 +0000

That’s very helpfu.
Thanks for the tips.

By: Josh Schumacher

Josh Schumacher — Mon, 27 Jul 2009 17:22:46 +0000

@Cool, yes you can use a combo of array_filter with another helper to remove any elements with the letter ‘c’ from you array above. Here’s some sample code for your use case:

$array = array(‘abc’,'cde’,'efg’);

function hasNoC($val) {
return (stripos($val, ‘c’) === false);
}

$clean_array = array_filter($array, “hasNoC”);

By: Cool

Cool — Mon, 27 Jul 2009 17:05:14 +0000

For example,

$array = array(abc,cde, efg);

If i want to remove elements that match with character ‘c’ from an array like above,

can it be works by using array_filter() and preg_match()?

Coz from wat i see here is using function within it to remove the elements. so i need to put whole command in current function, right?

Please correct me if i’m wrong.

By: Kaveh Rassoulzadegan

Kaveh Rassoulzadegan — Mon, 20 Apr 2009 16:09:33 +0000

You may change your discussion title. It is too global.

Maybe with something like :

“Delete selected items from an array with conditions”

for people looking for unset or array_splice.

By: Josh Schumacher

Josh Schumacher — Tue, 24 Mar 2009 03:12:17 +0000

Artur – If you need to completely delete an element from an array, use unset(). So to delete the element 0 from $arr, use: unset($arr[0]);

By: Artur

Artur — Mon, 23 Mar 2009 21:46:21 +0000

David,

Well, yes, looks like it will take care of deleting the data in the array string but it does not get rid of the string, how can that be done? For example, I am looking to remove the $arr[0] alltogether

thanks

By: David Barrett

David Barrett — Tue, 10 Feb 2009 21:01:58 +0000

Deleting a particular record from a string array is very straightforward:

$arr[$id]=”;
$arr=array_filter(arr);
$arr=array_values($arr);

Where $id is the row you wish to delete. array_filter with no callback deletes and FALSE values in the array, and an empty string is FALSE. Using this theory it will work for other array types too – so long as you don’t need any false values left in the array!