array merge and display with empty data

Question

I have two arrays, looks like following

$array1 = array("color" => "red","size" => "32");
$array2 = array("color" => "blue","width" => "40");

and my php code is as follows

    <?php
        $array1 = array("color" => "red","size" => "32");
        $array2 = array("color" => "blue","width" => "40");
        $result = array_merge_recursive($array1, $array2);
        echo json_encode($result);
?>

The output of this code is

{
color: [
"red",
"blue"
],
size: "32",
width: "40"
}

I want to get output like

{
color: [
"red",
"blue"
],
size: [
"32",
""
],
width: [
"",
"40"
]
}

How I can get this ? Please help me quickly.

Thanks in advance.

fab · Accepted Answer · 2015-07-27 14:02:58Z

1

Use array_merge with an array of default values

$array1 = array("color" => "red","size" => "32");
$array2 = array("color" => "blue","width" => "40");
$arrayInit = array("color" => "","width" => "","size"=>"");
$array1 = array_merge($arrayInit,$array1);
$array2 = array_merge($arrayInit,$array2);
$result = array_merge_recursive($array1, $array2);
echo json_encode($result);

answered Jul 27, 2015 at 14:02

fab

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Comments

Don't Panic · Accepted Answer · 2015-07-27 14:28:10Z

1

$keys = array_keys(array_merge($array1, $array2)); // get all the keys
foreach ($keys as $key) {
    // set each key in the result array to the value from the input array or a default ''
    $result[$key][] = isset($array1[$key]) ? $array1[$key] : '';
    $result[$key][] = isset($array2[$key]) ? $array2[$key] : '';
}
echo json_encode($result);

answered Jul 27, 2015 at 14:28

Don't Panic

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