Javascript move left/right of elements in array

move_array_elem.js

let stage='completed';
this.statuses = ['open', 'in-progress', 'completed'];
let index = this.statuses.indexOf(stage);
if (direction === 'left') {
    if (index > 0) {
        this.statuses.splice(index, 1);
        this.statuses.splice(index - 1, 0, stage);
    }
} else if (direction === 'right') {
    if (index < this.statuses.length - 1) {
        this.statuses.splice(index, 1);
        this.statuses.splice(index + 1, 0, stage);
    }
}
console.log(this.statuses);

Same pupose php version

if($direction == 'left') {
               $key = array_search($stage, $stages);
               if($key > 0) {
                   $temp = $stages[$key - 1];
                   $stages[$key - 1] = $stages[$key];
                   $stages[$key] = $temp;
               }
           } elseif($direction == 'right') {
               $key = array_search($stage, $stages);
               if($key < count($stages) - 1) {
                   $temp = $stages[$key + 1];
                   $stages[$key + 1] = $stages[$key];
                   $stages[$key] = $temp;
               }
           }

<?php

$stage = 'done';
$stages = [
	(object) [
		'g' => 'open',
		'l' => 'Open'
	],
	(object) [
		'g' => 'in_progress',
		'l' => 'In Progress'
	],
	(object) [
		'g' => 'done',
		'l' => 'Done'
	],
	(object) [
		'g' => 'ok',
		'l' => 'ok'
	]
];


$keyu = 10000;
foreach ($stages as $key => $item) {
	if ($item->g == $stage) {
		$keyu = $key;
		break;
	}
}
$key = $keyu;

$direction = 'left';
// echo $key;
// output 2 

// begin using only array splice method 

// $arraySpliced = array_splice($stages, $key, 1);
// $arraySpliced = array_splice($stages, $key-1, 0, $arraySpliced);

// end using only array splice method 


// begin using slice way 
$arraySliced = array_slice($stages, $key-1, 1);
// print_r($arraySliced);
// Array
// (
//     [0] => stdClass Object
//         (
//             [g] => in_progress
//             [l] => In Progress
//         )

// )

$arraySliced2 = array_slice($stages, $key, 1);// (array, index, number of element to slice)  take one element from array starting index $key
// print_r($arraySliced2);
// Array
// (
//     [0] => stdClass Object
//         (
//             [g] => done
//             [l] => Done
//         )

// )

$arraySpliced = array_splice($stages, $key); // removed all element from index and return the removed part
// print_r($stages);
// Array
// (
//     [0] => stdClass Object
//         (
//             [g] => open
//             [l] => Open
//         )

//     [1] => stdClass Object
//         (
//             [g] => in_progress
//             [l] => In Progress
//         )

// )
// print_r($arraySpliced);
// Array
// (
//     [0] => stdClass Object
//         (
//             [g] => done
//             [l] => Done
//         )

//     [1] => stdClass Object
//         (
//             [g] => ok
//             [l] => ok
//         )

// )

array_shift($arraySpliced); // remove first element from 2nd part of the array 
// print_r($arraySpliced);
// Array
// (
//     [0] => stdClass Object
//         (
//             [g] => ok
//             [l] => ok
//         )

// )
$deleted = array_pop($stages); // remove last element from 1st part of the array
print_r($stages);
// Array
// (
//     [0] => stdClass Object
//         (
//             [g] => open
//             [l] => Open
//         )

// )

// now merge first part, sliced parts and 2nd part or rest of the array 
$merged = array_merge($stages, $arraySliced2, $arraySliced, $arraySpliced);
print_r($merged); // expected answer

// Array
// (
//     [0] => stdClass Object
//         (
//             [g] => open
//             [l] => Open
//         )

//     [1] => stdClass Object
//         (
//             [g] => done
//             [l] => Done
//         )

//     [2] => stdClass Object
//         (
//             [g] => in_progress
//             [l] => In Progress
//         )

//     [3] => stdClass Object
//         (
//             [g] => ok
//             [l] => ok
//         )

// )

// end using slice way 


// begin using array index swqp 
 
//if($direction == 'left') {
//          if($key > 0) {
//              $temp = $stages[$key - 1];
//              $stages[$key - 1] = $stages[$key];
//              $stages[$key] = $temp;
//          }
//      } elseif($direction == 'right') {
//          if($key < count($stages) - 1) {
//              $temp = $stages[$key + 1];
//              $stages[$key + 1] = $stages[$key];
//              $stages[$key] = $temp;
//          }
// }

// end using array index swqp 








?>