我可以从多维数组中提取特定数据

Question

I'm trying to pull out the data from multidimensional array, but I get this error each time I'm trying to write the correct path. I don't know what's the problem since the path is correct.

The error:

   Notice: Undefined index: shipper in C:\xampp\htdocs\xml\dood.php on line 31

    Notice: Undefined index: shipper in C:\xampp\htdocs\xml\dood.php on line 31

This is the array

Array
(
    [Shp] => Array
        (
            [test] => Array
                (
                    [shipper] => Array
                        (
                            [customer] => Array
                                (
                                    [address] => Array
                                        (
                                            [ad1] => new road
                                            [ad2] => newyork
                                            [company] => none
                                            [city] => JO
                                        )

                                    [newlang] => 
                                )

                        )

                    [reciver] => Array
                        (
                            [customer] => Array
                                (
                                    [address] => Array
                                        (
                                            [ad1] => new road
                                            [ad2] => newyork
                                            [company] => none
                                            [city] => JO
                                        )

                                    [newlang] => 
                                )

                        )

                    [test] => Array
                        (
                            [shipper] => Array
                                (
                                    [customer] => Array
                                        (
                                            [address] => Array
                                                (
                                                    [ad1] => new road
                                                    [ad2] => newyork
                                                    [company] => none
                                                    [city] => JO
                                                )

                                            [newlang] => 
                                        )

                                )

                            [reciver] => Array
                                (
                                    [customer] => Array
                                        (
                                            [address] => Array
                                                (
                                                    [ad1] => new road
                                                    [ad2] => newyork
                                                    [AddrLn3] => newyork
                                                    [company] => none
                                                    [city] => JO
                                                )

                                            [newlang] => 
                                        )

                                )

                        )

                )

        )

)

php code

$arr = $array; //Set this to your converted xml
$comps = $arr['Shp']['test'];

foreach($comps as $comp){
     echo $comp['shipper']['customer']['address']['ad1'];
}

How do I fix this error ?

Please help I tried everything possible

Answer 1

You have an extra key in the code. Remove it

$arr = $array; //Set this to your converted xml
$comps = $arr['Shp']['test'];

foreach($comps as $comp){
     echo $comp['customer']['address']['ad1'];
}

And if you want to add actions specific to shipper

foreach($comps as $key => $comp){ 
    if ($key == 'shipper') { 
        echo $comp['customer']['address']['ad1']; 
    } 
}

In your array there is two set of shipper and reciver. One is outer and another is inner. See below

Array
(
    [Shp] => Array
        (
            [test] => Array
                (
                    #####Top shipper array
                    [shipper] => Array
                        (
                            [customer] => Array
                                (
                                    [address] => Array(.....)
                                    [newlang] => 
                                )
                        )
                    #####Top reciver array
                    [reciver] => Array
                        (
                            [customer] => Array
                                (
                                    [address] => Array(.....)
                                    [newlang] => 
                                )
                        )
                    #####Sub array - test
                    [test] => Array
                        (
                        #####Sub shipper array
                            [shipper] => Array
                                (
                                    [customer] => Array
                                        (
                                            [address] => Array(.....)
                                            [newlang] => 
                                        )
                                )
                        #####Sub reciver array
                            [reciver] => Array
                                (
                                    [customer] => Array
                                        (
                                            [address] => Array(.....)
                                            [newlang] => 
                                        )
                                )
                        )
                )
        )
)

If you want to iterate through inner array you can use above code.

If u wanna iterate through inner array use code below

$arr = $array; //Set this to your converted xml
$comps = $arr['Shp']['test']['test];
foreach($comps as $key => $comp){ 
    if ($key == 'shipper') { 
        echo $comp['customer']['address']['ad1']; 
    } 
}

Or if you wanna iterate through all and print only data when available

$arr = $array; //Set this to your converted xml
$comps = $arr['Shp']['test']['test];
foreach($comps as $key => $comp){ 
    if (isset($comp['shipper'])) { 
        echo $comp['shipper']['customer']['address']['ad1'];
    } 
}

Answer 2

To fix the error, determine what is in your $comp variable/array. The error occurs because what you are asking for is not there.

1. Comment out your line 31

2. Then echo the var_dump command. This will show you what is actually in your array. This will display your array content in a readable format.

   foreach($comps as $comp){ //echo $comp['shipper']['customer']['address']['ad1']; echo var_dump($comp); }

Look up the var_dump command in the php reference manual

3. Once you can see what the content of the array is, you should have no trouble determining how to access the content.