How put same element on a first place in associative array, using a php?

I've a assoc array like array("id"=>"1","name"=>"NiLL"); and I need to add first element in this array. My finally array must be thi开发者_StackOverflow社区s array("error" => "0", "id"=>"1","name"=>"NiLL"); How I can do this, with out overwrite array?

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Just use documentation:

function array_unshift_assoc(&$arr, $key, $val) 
{ 
    $arr = array_reverse($arr, true); 
    $arr[$key] = $val; 
    $arr = array_reverse($arr, true); 
    return count($arr); 
}

In this case:

$your_array = array("id"=>"1","name"=>"NiLL");
array_unshift_assoc($your_array, 'error', '0');

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You could use array_merge():

array_merge( array("Error" => 0), $other_array );

Your first parameter will be an array with the key/value you wish to insert into your other array.