Add a element to a PHP associative array

Question

1=>america,2=>India,3=>england

Above is my associative array. How can I bring 3=>england to front of the array?

Answer 1

Use array_pop and array_unshift .

$lastItem = array_pop($array);
array_unshift($array, $lastItem);

Answer 2

You can use the array_unshift function for that.

$array = array('americ', 'India');
array_unshift($array, 'englans');
print_r($array);

Output:

Array
(
    [0] => englans
    [1] => americ
    [2] => India
)

Answer 3

如果要保留数组键，请使用array_slice(,,,TRUE) 。

$array = array_slice( $array, -1, 1, TRUE ) + array_slice( $array, 0, -1, TRUE );

Answer 4

$temp = myArray[3];
$myArray[3] = $myArray[2];
$myArray[2] = $myArray[1];
$myArray[1] = $temp;

Answer 5

您可以使用array_reverse ，您可以在http://php.net/manual/en/function.array-reverse.php找到的文档。

Answer 6

krsort($myArray, SORT_NUMERIC)

Answer 7

You can use array_pop and array_unshift for this:

$last = array_pop($array);
array_unshift($array, $last);

Answer 8

I think he wants to have element 3=>england to the front so he can use it with foreach and the rest of the array has to stay on the same place

than he wants this result

$array[1] = 'america';
$array[2] = 'India';
$array[3] = 'england';
$new_array[3] = $array[3];
$new_array[1] = $array[1];
$new_array[2] = $array[2];
print_r($new_array);

there is probably a function for but i cant find it so i made one

function placeLastToFirst($array){
    $newArray = array();
    $newArray[count($array)] = $array[count($array)];
    for($i = 1;$i < count($array);$i++){

        $newArray[$i] = $array[$i ];
    }
    return $newArray;
}

you have to look out because this function will only work if the array begins with 1 (normal arrays begin with 0). In that case you can use this one

function placeLastToFirst($array){
    $newArray = array();
    $newArray[count($array)-1] = $array[count($array)-1];
    for($i = 0;$i < count($array)-1;$i++){

        $newArray[$i] = $array[$i];
    }
    return $newArray;
}

Answer 9

$contractTypes = array('' => 'All') + $contractTypes;