Merge/combine (not sure which i need?) the php array if keys [any][0] are the same number

Glen Keybit :

Using the following code I am able to convert an uploaded CSV file into a php array..

    <?PHP
function readCSV($csvFile){
    $file_handle = fopen($csvFile, 'r');
    fgetcsv($file_handle);
    fgetcsv($file_handle);
    fgetcsv($file_handle);
    while (!feof($file_handle) ) {
        $line_of_text[] = fgetcsv($file_handle, 1024);
    }
    fclose($file_handle);
    return $line_of_text;
}


// Set path to CSV file
$csvFile = 'test.csv';

$csv = readCSV($csvFile);
?>

Then I can view the array on my page with..

<?php echo '<pre>';
print_r($csv);
echo '</pre>'; ?> 

This outputs the array as follows (looks like real data but has been anonymized)..

Array
(
    [0] => Array
        (
            [0] => 15304
            [1] => 15-04478-27247
            [2] => ersmith0
            [3] => eric smith
            [4] => [email protected]
            [5] => 
            [6] => 2 Any Close
            [7] => 
            [8] => Manchester
            [9] => Greater Manchester
            [10] => M1 5BB
            [11] => United Kingdom
            [12] => eric smith
            [13] => +44 7719 123456
            [14] => 27 Any Close
            [15] => 
            [16] => Manchester
            [17] => Greater Manchester
            [18] => M1 5BB
            [19] => United Kingdom
            [20] => 
            [21] => 
            [22] => 
            [23] => 
            [24] => 2
            [25] => £3.90
            [26] => £0.00
            [27] => 
            [28] => £0.00
            [29] => £0.00
            [30] => £3.90
            [31] => No
            [32] => PayPal
            [33] => 30-Jan-20
            [34] => 30-Jan-20
            [35] => 
            [36] => 
            [37] => 
            [38] => 31-Jan-20
            [39] => 
            [40] => 
            [41] => 
            [42] => 5LD0123456789U
            [43] => Royal Mail 1st Class
            [44] => 
            [45] => 
            [46] => 
            [47] => No
            [48] => 
            [49] => No
            [50] => 
            [51] => No
        )

    [1] => Array
        (
            [0] => 15304
            [1] => 15-04478-27247
            [2] => ersmith0
            [3] => 
            [4] => 
            [5] => 
            [6] => 
            [7] => 
            [8] => 
            [9] => 
            [10] => 
            [11] => 
            [12] => 
            [13] => 
            [14] => 
            [15] => 
            [16] => 
            [17] => 
            [18] => 
            [19] => 
            [20] => 302804801330
            [21] => CAUTION DRIVEN BY A BIKER  - Fun Vinyl Decal Sticker 4x4/Car/Lorry/Van/Camper
            [22] => 
            [23] => No
            [24] => 1
            [25] => £1.95
            [26] => 
            [27] => 
            [28] => 
            [29] => 
            [30] => 
            [31] => 
            [32] => 
            [33] => 30-Jan-20
            [34] => 
            [35] => 
            [36] => 
            [37] => 
            [38] => 31-Jan-20
            [39] => No
            [40] => 
            [41] => 
            [42] => 
            [43] => 
            [44] => 
            [45] => 1711351782020
            [46] => 
            [47] => 
            [48] => 
            [49] => 
            [50] => 
            [51] => 
        )

    [2] => Array
        (
            [0] => 15304
            [1] => 15-04478-27247
            [2] => ersmith0
            [3] => 
            [4] => 
            [5] => 
            [6] => 
            [7] => 
            [8] => 
            [9] => 
            [10] => 
            [11] => 
            [12] => 
            [13] => 
            [14] => 
            [15] => 
            [16] => 
            [17] => 
            [18] => 
            [19] => 
            [20] => 302804815489
            [21] => Warning Biker With an Attitude Annoy At Your Own Risk Car Vinyl Decal Sticker
            [22] => 
            [23] => No
            [24] => 1
            [25] => £1.95
            [26] => 
            [27] => 
            [28] => 
            [29] => 
            [30] => 
            [31] => 
            [32] => 
            [33] => 30-Jan-20
            [34] => 
            [35] => 
            [36] => 
            [37] => 
            [38] => 31-Jan-20
            [39] => No
            [40] => 
            [41] => 
            [42] => 
            [43] => 
            [44] => 
            [45] => 1711351781020
            [46] => 
            [47] => 
            [48] => 
            [49] => 
            [50] => 
            [51] => 
        )

    [3] => Array
        (
            [0] => 15305
            [1] => 25-04445-36722
            [2] => pod69
            [3] => mart badger
            [4] => [email protected]
            [5] => 
            [6] => Via Riccione N. 35/30
            [7] => 
            [8] => Sa Tiacca Quartu S. Elena
            [9] => CA
            [10] => 09445
            [11] => Italy
            [12] => Badger Mart
            [13] => +39 987 654 3211
            [14] => Via Riccione N. 35/30
            [15] => 
            [16] => Sa Tiacca Quartu S. Elena
            [17] => CA
            [18] => 09445
            [19] => Italy
            [20] => 302667176336
            [21] => 2x Funny Car & Van or Camper WV Eyelash Vinyl Sticker Decal, Signs - Any Colour!
            [22] => 
            [23] => No
            [24] => 2
            [25] => £1.99
            [26] => £3.14
            [27] => 
            [28] => £0.00
            [29] => £0.00
            [30] => £7.12
            [31] => No
            [32] => PayPal
            [33] => 23-Jan-20
            [34] => 23-Jan-20
            [35] => 24-Jan-20
            [36] => 
            [37] => 
            [38] => 24-Jan-20
            [39] => Yes
            [40] => 
            [41] => 
            [42] => 25C157351T6888860U
            [43] => Royal Mail International Standard
            [44] => 
            [45] => 1709118816020
            [46] => 
            [47] => No
            [48] => 
            [49] => No
            [50] => 
            [51] => No
        )

    [4] => Array
        (
            [0] => 15306
            [1] => 20-04482-41274
            [2] => wideboiy38887
            [3] => Paul Lastname
            [4] => [email protected]
            [5] => Yellow please
            [6] => 10
            [7] => Broomstick Lane
            [8] => Okehampton
            [9] => Devon
            [10] => EX19 2FT
            [11] => United Kingdom
            [12] => Paul Lastname
            [13] => +44 7866 401983
            [14] => 105
            [15] => Broomstick Lane
            [16] => Okehampton
            [17] => Devon
            [18] => EX19 2FT
            [19] => United Kingdom
            [20] => 302755568952
            [21] => Junglist Soldier Car Window Laptop Wall Gift Drum Bass dnb Jungle Vinyl Sticker
            [22] => 
            [23] => No
            [24] => 1
            [25] => £1.99
            [26] => £0.00
            [27] => 
            [28] => £0.00
            [29] => £0.00
            [30] => £1.99
            [31] => No
            [32] => PayPal
            [33] => 01-Feb-20
            [34] => 01-Feb-20
            [35] => 03-Feb-20
            [36] => 
            [37] => 
            [38] => 
            [39] => No
            [40] => 
            [41] => 
            [42] => 7SD68673EE789782X
            [43] => Royal Mail 1st Class
            [44] => 
            [45] => 1711667179020
            [46] => 
            [47] => No
            [48] => 
            [49] => No
            [50] => 
            [51] => No
        )

    <!-And so on.....>

If you look at [0],[1] & [2] you will see they are all part of the same sales record number (so [0][0], [1][0] & [2][0] are the same number) (but items [3][0] & [4][0] are separate orders / different numbers). (remember though this is just an example, the data changes, there could be 100's of orders and there could be 1 or several items per order number.)

I would like to combine the arrays for orders with the same sales record number [any][0]

So something like....

if [any][0] match each other then combine the array

This would mean all the info for an order number that matches would be in 1 array per order number.

I want to keep all data (ignore blanks) but have them merged/combined into the matching top-level array as sub arrays so for example.. if [1][0] matches [2][0] all the data from [2][0] through to [2][51] (that is not empty or the same) should be added onto [1] so it becomes like...

Array
(
    [0] => Array
        (
            [0] => 15304
            [1] => 15-04478-27247
            [2] => ersmith0
            [3] => eric smith
            [4] => [email protected]
            [5] => 
            [6] => 2 Any Close
            [7] => 
            [8] => Manchester
            [9] => Greater Manchester
            [10] => M1 5BB
            [11] => United Kingdom
            [12] => eric smith
            [13] => +44 7719 123456
            [14] => 27 Any Close
            [15] => 
            [16] => Manchester
            [17] => Greater Manchester
            [18] => M1 5BB
            [19] => United Kingdom
            [20] => 
            [21] => Array (
                [0] => CAUTION DRIVEN BY A BIKER  - Fun Vinyl Decal Sticker 4x4/Car/Lorry/Van/Camper
                [1] => Warning Biker With an Attitude Annoy At Your Own Risk Car Vinyl Decal Sticker
            )
            [22] => 
            [23] => 
            [24] => Array (
                [0] => 1
                [1] => 1
            ) 
            [25] => Array (
                [0] => 1.95
                [1] => 1.95
            ) 
            [26] => £0.00
            [27] => 
            [28] => £0.00
            [29] => £0.00
            [30] => £3.90
            [31] => No
            [32] => PayPal
            [33] => 30-Jan-20
            [34] => 30-Jan-20
            [35] => 
            [36] => 
            [37] => 
            [38] => 31-Jan-20
            [39] => 
            [40] => 
            [41] => 
            [42] => 5LD0123456789U
            [43] => Royal Mail 1st Class
            [44] => 
            [45] => 
            [46] => 
            [47] => No
            [48] => 
            [49] => No
            [50] => 
            [51] => No
        )

    [3] => Array
        (
            [0] => 15305
            [1] => 25-04445-36722
            [2] => pod69
            [3] => mart badger
            [4] => [email protected]
            [5] => 
            [6] => Via Riccione N. 35/30
            [7] => 
            [8] => Sa Tiacca Quartu S. Elena
            [9] => CA
            [10] => 09445
            [11] => Italy
            [12] => Badger Mart
            [13] => +39 987 654 3211
            [14] => Via Riccione N. 35/30
            [15] => 
            [16] => Sa Tiacca Quartu S. Elena
            [17] => CA
            [18] => 09445
            [19] => Italy
            [20] => 302667176336
            [21] => 2x Funny Car & Van or Camper WV Eyelash Vinyl Sticker Decal, Signs - Any Colour!
            [22] => 
            [23] => No
            [24] => 2
            [25] => £1.99
            [26] => £3.14
            [27] => 
            [28] => £0.00
            [29] => £0.00
            [30] => £7.12
            [31] => No
            [32] => PayPal
            [33] => 23-Jan-20
            [34] => 23-Jan-20
            [35] => 24-Jan-20
            [36] => 
            [37] => 
            [38] => 24-Jan-20
            [39] => Yes
            [40] => 
            [41] => 
            [42] => 25C157351T6888860U
            [43] => Royal Mail International Standard
            [44] => 
            [45] => 1709118816020
            [46] => 
            [47] => No
            [48] => 
            [49] => No
            [50] => 
            [51] => No
        )

    [4] => Array
        (
            [0] => 15306
            [1] => 20-04482-41274
            [2] => wideboiy38887
            [3] => Paul Lastname
            [4] => [email protected]
            [5] => Yellow please
            [6] => 10
            [7] => Broomstick Lane
            [8] => Okehampton
            [9] => Devon
            [10] => EX19 2FT
            [11] => United Kingdom
            [12] => Paul Lastname
            [13] => +44 7866 401983
            [14] => 105
            [15] => Broomstick Lane
            [16] => Okehampton
            [17] => Devon
            [18] => EX19 2FT
            [19] => United Kingdom
            [20] => 302755568952
            [21] => Junglist Soldier Car Window Laptop Wall Gift Drum Bass dnb Jungle Vinyl Sticker
            [22] => 
            [23] => No
            [24] => 1
            [25] => £1.99
            [26] => £0.00
            [27] => 
            [28] => £0.00
            [29] => £0.00
            [30] => £1.99
            [31] => No
            [32] => PayPal
            [33] => 01-Feb-20
            [34] => 01-Feb-20
            [35] => 03-Feb-20
            [36] => 
            [37] => 
            [38] => 
            [39] => No
            [40] => 
            [41] => 
            [42] => 7SD68673EE789782X
            [43] => Royal Mail 1st Class
            [44] => 
            [45] => 1711667179020
            [46] => 
            [47] => No
            [48] => 
            [49] => No
            [50] => 
            [51] => No
        )

    <!-And so on.....>

I hope that makes sense and that's what I think I need.

What i am trying to achieve is to make a "for each loop" for each top-level array so that I can make an invoice page, where I can then use each top-level array as a separate invoice/order page in the html markup for that page.

Rudra Thakkar :

You can process array like this

$arr = [];
//$csv is your array
foreach($csv as $key => $value){
  $arr[$value[0]][] = $value;  
}
print_r($arr);

this code will append all nested arrays with same [0]th index.

then you can use other php functions to make your array unique.

if you want a result with merged arrays you can try below code.

$arr = [];
//$csv is your array
foreach($csv as $key => $value){
  if(!array_key_exists($value[0],$arr)){
    $arr[$value[0]] = [];
  }
  $arr[$value[0]] = array_merge($arr[$value[0]],$value);  
}
print_r($arr);

I have not tested code so please correct any error if there is.

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