transfer specific index of array to a new array - php

Question

I want to delete an index from array and insert it into in new array. I want two things which i tried to explain one is

Array
    (
        [index1] => Deleted
        [index4] => Inserted
    )
     Array
(

        [index3] => test
        [index4] => Inserted
    )
     Array
    (

        [index2] => numbers
        [index3] => test
        [index4] => Inserted
    )
     Array
    (
        [index1] => Deleted

    )

now i want if arraysize is 1

 foreach($array as $arrays){
    array_push($array1,($arrays[0]));
      unset ($arrays[0]);

 }

i want to remove

Array
    (
        [index1] => Deleted

    )

from $array and $array to be

 [index1] => Deleted

second is if $array is

Array
(

    [index2_123] => numbers
    [index3_level] => test
    [index4_test] => Inserted
)

i want a new array with $array1 as

Array
(

    [index3_level] => test

)

and $array1 is modified to

Array
(

    [index2_123] => numbers
    [index4_test] => Inserted
)

$array1=array(); array_merge($array1,$array[2]); unset($array[2]); //try this — Manashvi Birla
– Manashvi Birla, Commented May 29, 2015 at 9:14
So you want to split array according to even and odd index?? — N Kumar
– N Kumar, Commented May 29, 2015 at 9:20

Narendrasingh Sisodia · Accepted Answer · 2015-05-29 09:25:11Z

2

Try this way,

$arr = Array
    (
        'index1' => 'Deleted',
        'index2' => 'numbers',
        'index3' => 'test',
        'index4' => 'Inserted'
    );
$arr1 = $arr2 = array();
$i = 0;
foreach($arr as $key => $value){
    if($i%2 == 0){
        $arr1[$key] = $value;
    }else{
        $arr2[$key] = $value;
    }
    $i++;
}

Output

$arr1
Array
(
    [index1] => Deleted
    [index3] => test
)

$arr2
Array
(
    [index2] => numbers
    [index4] => Inserted
)

And if you don't need that value then you can use it as

$i = 0;
foreach($arr as $key => $value){
    if($i%2 == 0){
        $arr[$key] = $value;
    }else{
        unset($arr[$key]);
    }
    $i++;
}
print_r($arr);

Output:

Array
(
    [index1] => Deleted
    [index3] => test
)

edited May 29, 2015 at 9:25

answered May 29, 2015 at 9:17

Narendrasingh Sisodia

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Comments

Sougata Bose · Accepted Answer · 2015-05-29 09:25:23Z

1

Loop through them and generate the array -

$new = array();
foreach($yourarray as $key => $val) {
    $index = str_replace('index', '', $key); // get the key index
    if($index % 2 != 0) { // check for odd or even
        $new[$key] = $val; // set the new array
        unset($yourarray[$key]); // delete from the main array
    }
}

Update

For any index use a counter

$i = 0;
$new = array();
foreach($yourarray as $key => $val) {
    if($i % 2 != 0) { // check for odd or even
        $new[$key] = $val; // set the new array
        unset($yourarray[$key]); // delete from the main array
    }
    $i++;
}

edited May 29, 2015 at 9:25

answered May 29, 2015 at 9:16

Sougata Bose

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1 Comment

User4834426 Over a year ago

hi i don't want to specify it for odd or even . it can be any index

Federkun · Accepted Answer · 2015-05-29 09:44:35Z

1

You can use a combination of array_flip and array_diff_key to filter the first array, then use array_diff filter the second:

$specificIndex = array('index1', 'index3');
$array1 = array_diff_key($array, array_flip($specificIndex));
$array2 = array_diff($array, $array1);

Demo.

If you want get in an array only certain elements of your choice you can do something like:

$specificIndex = array('index1', 'index3');
$selectedItem = array_intersect_key($array, array_flip($specificIndex));

Demo.

edited May 29, 2015 at 9:44

answered May 29, 2015 at 9:39

Federkun

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1 Comment

User4834426 Over a year ago

<?php  $array = array(         'index1' => 'Deleted',         'index2' => 'numbers',         'index3' => 'test',         'index4' => 'Inserted', );  $specificIndex = array('index1', 'index3'); $array1 = array_diff_key($array, array_flip($specificIndex)); $array2 = array_diff($array, $array1);  print_r($array1); print_r($array2);

instead if $array2 can we have updated value in $array

User4834426 · Accepted Answer · 2015-06-22 04:21:44Z

0

<?php
$array = array(
        'index1' => 'Deleted',
        'index2' => 'numbers',
        'index3' => 'test',
        'index4' => 'Inserted',
);
$specificIndex = 'index3';
$array1=array();
foreach($array as $key => $value){
if($key==$specificIndex){
 $array1[$key] = $value;
unset($array[$specificIndex]);
}
}
print_r($array);
print_r($array1);

http://3v4l.org/TvZ19

edited Jun 22, 2015 at 4:21

answered Jun 2, 2015 at 6:05

User4834426

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2 Comments

aravind Over a year ago

Add more information on how this answers the OP's question.

User4834426 Over a year ago

$specificIndex taking only one value at a time how can more indexes can be given to it at a time $specificIndex = 'index2','index3';

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