php array push element at an index and move the previous element

Question

This is my array. I want to push an element at index 3 and at the same time move the previous element to next. Please read first its not array_splice() work

array(6) {
  [0]=>
  string(1) "One_test"
  [1]=>
  string(1) "Two_test"
  [2]=>
  string(1) "Three_test"
  [3]=>
  string(1) "Four_test"
  [4]=>
  string(1) "Five_test"
  [5]=>
  string(1) "Six_test"
}

So my desired output is

array(6) {
  [0]=>
  string(1) "One_test"
  [1]=>
  string(1) "Two_test"
  [2]=>
  string(1) "Three_test"
  [3]=>
  string(1) "Six_test"
  [4]=>
  string(1) "Four_test"
  [5]=>
  string(1) "Five_test"
}

So notice I need replace 3rd indexed element with 5th indexed element and then move previously 3rd indexed element into next. Finally the pushed element (5th) to remove

Any Idea?

@Praveen Kumar please read first. I have different requirement — Rejoanul Alam
– Rejoanul Alam, Commented Apr 22, 2016 at 10:48
You have 'a', 'b', 'c', 'd', 'e' and you wanna put in 'x', and you get this: a b c x d e right? — Praveen Kumar Purushothaman
– Praveen Kumar Purushothaman, Commented Apr 22, 2016 at 10:49
Try it out, and if it didn't work, I am happy to reopen the question. — Praveen Kumar Purushothaman
– Praveen Kumar Purushothaman, Commented Apr 22, 2016 at 10:50
Oh okay... I just had a better view. You can do it using pop(). Lemme reopen. Sorry for that. — Praveen Kumar Purushothaman
– Praveen Kumar Purushothaman, Commented Apr 22, 2016 at 10:52

Community · Accepted Answer · 2017-05-23 12:07:57Z

2

Inspired from the dupe: Insert new item in array on any position in PHP

I would do a array_pop() and array_slice()on the array:

$original = array( 'a', 'b', 'c', 'd', 'e' );
$new_one = array_pop($original);

array_splice( $original, 3, 0, $new_one );

My Solution

So before:

array(6) {
  [0]=>
  string(8) "One_test"
  [1]=>
  string(8) "Two_test"
  [2]=>
  string(10) "Three_test"
  [3]=>
  string(9) "Four_test"
  [4]=>
  string(9) "Five_test"
  [5]=>
  string(8) "Six_test"
}

And After:

array(6) {
  [0]=>
  string(8) "One_test"
  [1]=>
  string(8) "Two_test"
  [2]=>
  string(10) "Three_test"
  [3]=>
  string(8) "Six_test"
  [4]=>
  string(9) "Four_test"
  [5]=>
  string(9) "Five_test"
}

edited May 23, 2017 at 12:07

CommunityBot

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answered Apr 22, 2016 at 11:01

Praveen Kumar Purushothaman

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Comments

StefanKB · Accepted Answer · 2016-04-22 12:09:18Z

0

This method takes your array, the index of the item you want to move, and the index at which you want to push the item to.

function moveArrayItem($array, $currentPosition, $newPosition){

    //get value of index you want to move
    $val = array($array[$currentPosition]);

    //remove item from array
    $array = array_diff($array, $val);

    //push item into new position
    array_splice($array,$newPosition,0,$val);

    return $array;
}

Example of use:

$a = array("first", "second", "third", "fourth", "fifth", "sixth");

$newArray = moveArrayItem($a, 5, 3);

answered Apr 22, 2016 at 12:09

StefanKB

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