Change recursive array into single array with same key

Question

i want to know if it's possible to change an array structure, currently i'm receiving this array:

[{"ano":["2004","2006"]},{"ano":["2006",""]},{"ano":["2011",""]},{"ano":["2013",""]}]

I need those dates split one by row like this:

[{"ano":"2004"},{"ano":"2006"},{"ano":"2006"},{"ano":"2011"}]

So, basically i'm think i could clean empty and duplicated values, and then split the array or something?

I'm using PHP and MySQL SELECT to return those values like this:

while($ano = $pegaAno->fetchObject()){
    $ar1 = array("ano" => $ano->inicio);
    $ar2 = array("ano" => $ano->fim);
    $result = array_merge_recursive($ar1, $ar2);
    //print_r($result);
    array_push($return_arr,$result);
}

Any help please?

Can the array be created in the desired structure from the start? Or does it have to be changed from the array you are showing at the top`? — BobbyTables
– BobbyTables, Commented Aug 13, 2015 at 13:36
Hi @zedd, right now i'm requesting 2 columns from database, date_start and date_end, so it's coming 2 arrays, i've merged them recusively but it's returning json like the first array above, i need to return date_start and date_end values with the same key and remove duplicates, because i need to display a list of dates avaliable for that query — William Xavier
– William Xavier, Commented Aug 13, 2015 at 13:38

Sam · Accepted Answer · 2015-08-13 14:55:01Z

2

while($ano = $pegaAno->fetchObject())
   array_push($return_arr, array("ano" => $ano->inicio), array("ano" => $ano->fim));
$return_arr = array_unique($return_arr);

Perhaps you want something like this? So you can have an array as

0 => [ "ano" => value ]
1 => [ "ano" => value ]
2 => [ "ano" => value ]
//etc...

edited Aug 13, 2015 at 14:55

answered Aug 13, 2015 at 13:40

Sam

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5 Comments

William Xavier Over a year ago

You rock man, exactly what i needed, do you know how i can check for duplicates between both arrays and remove them?

William Xavier Over a year ago

Did not worked, maybe needed to remove duplicates before array_push?

Sam Over a year ago

@WilliamXavier it actually worked for me, can you show me how did you try?

William Xavier Over a year ago

I've tried it like this: array_push(array_unique($return_arr),array("ano" => $ano->inicio), array("ano" => $ano->fim));

Sam Over a year ago

@WilliamXavier Modified the code, use it after the while :)

Vipul · Accepted Answer · 2015-08-13 14:21:50Z

You may also try this code

    $input[0]['anno'] = array("2004","2006");
    $input[1]['anno'] = array("2008","");
    $input[2]['anno'] = array("2002","2006");
    $input[3]['anno'] = array("2004","2013");
    $arr = array();   
    foreach ($input as $value) { 
    foreach ($value as $key =>  $value1) { 
        foreach ($value1 as  $value2) { 
            $arr[] = $value2;
        }   
    } 

    } 
    $resulted = array_filter(array_unique($arr));
    $resulted_array = array();
    foreach ($resulted as $value) { 
        $resulted_array[][$mainkey] = $value;
    }
    print_r($resulted_array);

//RESULT 

Array
(
    [0] => Array
        (
            [anno] => 2004
        )

    [1] => Array
        (
            [anno] => 2006
        )

    [2] => Array
        (
            [anno] => 2008
        )

    [3] => Array
        (
            [anno] => 2002
        )

    [4] => Array
        (
            [anno] => 2013
        )

)

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