PHP array - `array_splice` issue

Question

I am working with PHP array to store the comma separated values of product Ids and then in turn use them to show as recent seen products.

Implementation is as below:

$product_data = array();
$array_ids_a_display = array();   
$check_status = array();
$array_check= array();
$_COOKIE['Pr'] = [1,2,3,4,5,6,7,8]

Then i am Taking the last point of the stored string

$array_check = explode(',',substr($_COOKIE['IdProduto'],0,-1));

Now, i check of products are enabled then store them into one other array

foreach($array_check as $id_a_checar){
    $check_status = $this->model->getProduct($id_a_checar);
    if($check_status['status']){ // If status is 1
        $array_ids_a_display[$contprods++] = $id_a_checar;
    }
}

if($s['limit']>count($array_ids_a_display)){ 
    //If the number of valid products < number of products of module
    $s['limit'] = count($array_ids_a_display);  
      //will show,then reconfigures the number of products that will show
  }   
}

where $s['limit'] comes from backend , let us say 6 to limit the number of products.

Now, i will reverse the array to get latest visited product at first place like as

$last_ended = array_reverse($array_ids_a_display);
array_splice($last_ended,0,(int)$s['limit']);
foreach ($last_ended as $result) {
    $product_data[$result] = $this->product->getProduct($result);
}

Now here comes the problem, as i am only getting 3 products in $product_data array but is shall get 6 products.

I hope that there is issue with array_splice because if i will comment array_splice then i am getting all stores products in cookies as result. Mysql query is working very fine.

Please advice how to get latest 6 values from array

if I were you the first thing I would do is some echo debugging to see where your data is getting lost — Marshall Tigerus
– Marshall Tigerus, Commented Jun 15, 2016 at 20:39
Your data is what you need to show. Nobody knows what your data is. — AbraCadaver
– AbraCadaver, Commented Jun 15, 2016 at 20:43

divix · Accepted Answer · 2016-06-15 20:49:45Z

2

Here you are:

$last_ended = array(1, 2, 3, 4, 5, 6, 7, 8);
$last_ended = array_reverse($last_ended);
//here is what you missed:
$last_ended = array_splice($last_ended, 0, 6);

print_r($last_ended);
//returns Array ( [0] => 8 [1] => 7 [2] => 6 [3] => 5 [4] => 4 [5] => 3 )

You need to assign your $last_ended var into array_splice result.

answered Jun 15, 2016 at 20:49

divix

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Comments

keupsonite · Accepted Answer · 2016-06-15 20:52:09Z

1

<?php
// Get the last 6 entries of an array...
$arr = array(
      1,
      2,
      3,
      4,
      5,
      6,
      7,
      8
);

$entries = array_splice($arr, -6);
// returns [3, 4, 5, 6, 7, 8]

}

edited Jun 15, 2016 at 20:52

answered Jun 15, 2016 at 20:44

keupsonite

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Comments

yawa yawa · Accepted Answer · 2016-06-15 21:01:17Z

0

$maxResultLength = 6;
$someArray = [1,2,3,4,5,6,7,8,9,10,'a','b','c','d','e','f','g','h'];
$startIndex = (count($someArray) >= $maxResultLength) ? count($someArray) - $maxResultLength : 0;
$lastSixElements = array_slice($someArray, $startIndex, $maxResultLength);

or

$maxResultLength = 6;
$someArray = [1,2,3,4,5,6,7,8,9,10,'a','b','c','d','e','f','g','h'];
$lastSixElements = array_splice($someArray, -6);

answered Jun 15, 2016 at 21:01

yawa yawa

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