Remove element from array in php

Question

I am new to php and i want to remove element from array Here is my array:

Array
(
[Total] => 21600000
[Items] => Array
    (
        [2-13] => Array
            (
                [Item] => 2
                [PID] => 13
                [UPrice] => 11000000
                [Qty] => 1
                [Total] => 11000000
            )

        [58-167] => Array
            (
                [Item] => 58
                [PID] => 167
                [UPrice] => 5300000
                [Qty] => 1
                [Total] => 5300000
            )

    )

)

And i want to remove array element by PID. I have try this but no luck:-

    $ShoppingBag =$_SESSION['ssss'];        

    if ($ShoppingBag !== null && $ShoppingBag['Total'] > 0) {          
        foreach ($ShoppingBag['Items'] as $IOrder) {               

          if($IOrder["PID"]==13)
          {                 
              unset($ShoppingBag[$IOrder]);

          }else
          {

          }
        }
    }

Please help. Thanks

You unset $IOrder variable but it doesn't actually modify the original array. Pass it by reference: foreach ($ShoppingBag['Items'] as & $IOrder) { — notice the & added before $IOrder. — Amal
– Amal, Commented Jun 2, 2014 at 10:51
do you want to remove every PID element or only PID with value "13" — ashok_p
– ashok_p, Commented Jun 2, 2014 at 10:51

Svetoslav · Accepted Answer · 2014-06-02 11:02:50Z

5

You can try with one simple array map :)

$arr = [
    'Total' => 21600000,
    'Items' => [
                '2-13' => [
                        'Item' => 2,
                        'PID' => 13,
                        'UPrice' => 11000000,
                        'Qty' => 1,
                        'Total' => 11000000
                ],
                '58-167'=> [
                        'Item' => 58,
                        'PID' => 167,
                        'UPrice' => 5300000,
                        'Qty' => 1,
                        'Total' => 5300000
                ]
            ]
    ];

$test = array_map(function($ar) { 
    foreach($ar as $k=>$i) { 
        if( isset($i['PID']) && $i['PID'] == '13') 
            unset($ar[$k]); 
    } 
    return $ar; } , $arr);

var_dump($test);

answered Jun 2, 2014 at 11:02

Svetoslav

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Mobasher Fasihy · Accepted Answer · 2014-06-02 11:04:05Z

2

You need 2 loop to do the action you want.

foreach($my_array as $key=>$value)
{
    if(is_array($value))
    {
       foreach($value as $k=>$v)
       {
         if($k == 'PID')
         {
             unset($value[$k]);
         }
       }
   }
}

with this you can remove only element with key PID.

edited Jun 2, 2014 at 11:04

answered Jun 2, 2014 at 10:56

Mobasher Fasihy

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4 Comments

noobie-php Over a year ago

reason for downvote? This is a legit answer explain the reason for down vote

scragar Over a year ago

It doesn't work, the $k variable will be PID for both rows, but they don't want to remove all of them, they want to remove entries with a PID of a specific value.

Mobasher Fasihy Over a year ago

so we can check with value for example if $v == 13 then use unset.

noobie-php Over a year ago

@scragar: this is a generic answer tho i didnt answer it but i think it clears the intention fairly so i dont see a point on downvoting it just for specific reason

Mohamed23gharbi · Accepted Answer · 2014-06-02 11:22:45Z

Hi youre unsetting the $IOrder instead of the Item that you want to delete: This code is a solution an i tested it :

$ShoppingBag = Array
(
"Total" => 21600000,
"Items" => Array
    (
        "2-13" => Array
            (
                "Item" => 2,
                "PID" => 13,
                "UPrice" => 11000000,
                "Qty" => 1,
                "Total" => 11000000,
            ),

        "58-167" => Array
            (
                "Item" => 58,
                "PID" => 167,
                "UPrice" => 5300000,
                "Qty" => 1,
                "Total" => 5300000,
            ),

    ),

);

foreach($ShoppingBag["Items"] as $key => $value){
    if($value["PID"]==13){
        unset($ShoppingBag["Items"][$key]);
    }
}

You should know that always when you're using foreach loop the foreach( $a as $b ) when you do something to $b , $a remains the same because tey are different variables :) Hope it will help you .

Regards.

scragar · Accepted Answer · 2014-06-02 12:10:38Z

$arr = [
    'Total' => 21600000,
    'Items' => [
                '2-13' => [
                        'Item' => 2,
                        'PID' => 13,
                        'UPrice' => 11000000,
                        'Qty' => 1,
                        'Total' => 11000000
                ],
                '58-167'=> [
                        'Item' => 58,
                        'PID' => 167,
                        'UPrice' => 5300000,
                        'Qty' => 1,
                        'Total' => 5300000
                ]
            ]
    ];

$pid_to_remove = 13;

$new_ar = array_filter(
    $arr,
    function ($v) using ($pid_to_remove) {
        return (!isset($v['PID'])) || ($v['PID'] != $pid_to_remove);
    }
);

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