将数组的特定索引传递给新数组 - 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
)

Answer 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++;
}