Add a element to a PHP associative array

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

Above is my associative array. How can I bring 3=>england to 开发者_如何学Cfront of the array?

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Use array_pop and array_unshift.

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

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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
)

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If you want to preserve the array keys use array_slice(,,,TRUE).

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

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

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You can do that with array_reverse, docs you can find at http://php.net/manual/en/function.array-reverse.php

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krsort($myArray, SORT_NUMERIC)

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You can use array_pop and array_unshift for this:

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

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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;
}

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