多维数组中的array_unshift插入所有数组中的第一个元素

Question

first of all i say sorry for my english..

i have to insert a element in a multidimensional array at the first position on all the sub-array..

$docNum = "RT/2013-2014/0266";
$values = 
Array
(
[0] => Array
    (
        [0] => 2014-08-07
        [1] => Dl-Dis1
        [2] => Discount
        [3] => 7.500
        [4] => 26.25
    )

[1] => Array
    (
        [0] => 2014-08-07
        [1] => Dl-Dis1
        [2] => Discount
        [3] => 7.500
        [4] => 24.38
    )

 )

these two are input..

code i give to combine is

array_unshift($values, $docNum);

and the output i have is

 Array
(
[0] => RT/2013-2014/0266
[1] => RT/2013-2014/0266
[2] => Array
    (
        [0] => 2014-08-07
        [1] => Dl-Dis1
        [2] => Discount
        [3] => 7.500
        [4] => 26.25
    )

[3] => Array
    (
        [0] => 2014-08-07
        [1] => Dl-Dis1
        [2] => Discount
        [3] => 7.500
        [4] => 24.38
    )

)

the output i want should be

 Array
(


[0] => Array
    (
        [0] => RT/2013-2014/0266
        [1] => 2014-08-07
        [2] => Dl-Dis1
        [3] => Discount
        [4] => 7.500
        [5] => 26.25
    )

[1] => Array
    (
        [0] => RT/2013-2014/0266
        [1] => 2014-08-07
        [2] => Dl-Dis1
        [3] => Discount
        [4] => 7.500
        [5] => 24.38
    )

)

i think hope you understand what i am asking..

and also i already see this [link]:(stackoverflow.com/questions/15398678/array-unshift-for-multidimensional-arrays)

pls dont mark as duplicate..

thank you advance..

Answer 1

You can't unshift it outright. That will prepend the values on the parent array not the sub arrays. You can loop it first, then each sub array, then you use unshift. Example:

// generate the string with the value you'd unshift
$docNum = "RT/2013-2014/0266";

// build up your multidimensional array
$values = array(
    array('2014-08-07', 'Dl-Dis1', 'Discount', 7.500, 26.25),
    array('2014-08-07', 'Dl-Dis1', 'Discount', 7.500, 24.38),
);

// for every sub-array...
foreach($values as &$sub_array) { // & reference
    // ... unshift your value
    array_unshift($sub_array, $docNum);
}

echo '<pre>';
// check out the result
print_r($values);

Output is as follow:

Array
(
    [0] => Array
    (
        [0] => RT/2013-2014/0266
        [1] => 2014-08-07
        [2] => Dl-Dis1
        [3] => Discount
        [4] => 7.5
        [5] => 26.25
    )

    [1] => Array
    (
        [0] => RT/2013-2014/0266
        [1] => 2014-08-07
        [2] => Dl-Dis1
        [3] => Discount
        [4] => 7.5
        [5] => 24.38
    )
)