Remove part of associative array

Question

I want to search an associative array and when I find a value, delete that part of the array.

Here is a sample of my array:

    Array
(
    [0] => Array
        (
            [id] => 2918
            [schoolname] => Albany Medical College
            [AppService] => 16295C0C51D8318C2
        )

    [1] => Array
        (
            [id] => 2919
            [schoolname] => Albert Einstein College of Medicine
            [AppService] => 16295C0C51D8318C2
        )

    [2] => Array
        (
            [id] => 2920
            [schoolname] => Baylor College of Medicine
            [AppService] => 16295C0C51D8318C2
        )
}

What I want to do is find the value 16295C0C51D8318C2 in the AppService and then delete that part of the array. So, for example, if that code was to run on the above array, it was empty out the entire array since the logic matches everything in that array.

Here is my code so far:

            foreach($this->schs_raw as $object) {
                if($object['AppService'] == "16295C0C51D8318C2") {
                    unset($object);
                }
        }

You're trying to unset the local variable of your foreach loop. But you intended to modify the original arrays content. — mario, Nov 03 '13 at 20:39

score 4 · Answer 1 · answered Nov 03 '13 at 20:44

4

array_filter will help (http://php.net/manual/en/function.array-filter.php)

$yourFilteredArray = array_filter(
    $this->schs_raw,
    function($var) {
        return $object['AppService'] != "16295C0C51D8318C2"
    }
);

answered Nov 03 '13 at 20:44

bukart

4,906
2
21
40

score 3 · Accepted Answer · answered Nov 03 '13 at 20:39

3

Try like this:

foreach ($this->schs_raw as &$object) {
    if($object['AppService'] == "16295C0C51D8318C2") {
        unset($object);
    }
}

Eventually:

foreach ($this->schs_raw as $k => $object) {
    if($object['AppService'] == "16295C0C51D8318C2") {
        unset($this->schs_raw[$k]);
    }
}

answered Nov 03 '13 at 20:39

speccode

1,562
9
11

Thanks. That did it. What is the & symbol used for? I've never seen it before. – Richard M Nov 03 '13 at 20:43
1

@Richard: http://php.net/manual/en/language.references.php – Felix Kling Nov 03 '13 at 20:43
http://php.net/manual/en/language.references.pass.php – speccode Nov 03 '13 at 20:43

score 2 · Answer 3 · edited Nov 03 '13 at 20:47

2

Try this:

foreach($this->schs_raw as $key=>$object) {
  if($object['AppService'] == "16295C0C51D8318C2") {      
    unset($this->schs_raw[$key]); // unset the array using appropriate index    
    break; // to exit loop after removing first item
  }
}

edited Nov 03 '13 at 20:47

Amal Murali

75,622
18
128
150

answered Nov 03 '13 at 20:44

Althaf M

498
4
12

score 0 · Answer 4 · answered Nov 03 '13 at 20:39

0

Why not create a new array? If match not found, add index to new array... If it is found, don't add it. Your new array will only contain the data you want.

answered Nov 03 '13 at 20:39

Gavin

2,123
1
15
19

Imagine an array is used way too many times in the application, and a logic should be implemented, where this array is going to be modified – Royal Bg Nov 03 '13 at 20:42

Remove part of associative array

4 Answers4