How to return item from multi dimensional array?

Question

I have a text file with contents such as following which are ids and names.

23414,apple
24323,orange
64563,banana

In a PHP file I read in the content of the text file into an array like

$itemArray = array();

$records = file('/path/to.file/guilds.txt');
foreach ($records as $line) {
$lineArray = explode(',',$line);
array_push($itemArray,$lineArray);  
}

If I know the id of a particular record say 24323, how can I return the associated name, orange. All ids are unique. I tried something like the following with no luck.

$id = 24323;

echo "Result:" . array_search($id, array_column($itemArray,1,0));

Edit: To clarify code.

you can achieve the goal with 2 lines of code

RomanPerekhrest
– RomanPerekhrest

2017-09-06 06:58:51 +00:00
Commented Sep 6, 2017 at 6:58 — RomanPerekhrest
– RomanPerekhrest, Commented Sep 6, 2017 at 6:58

Akshay Hegde · Accepted Answer · 2017-09-06 04:44:35Z

2

If I know the id of a particular record say 2, how can I return the associated name, orange. All ids are unique. I tried something like the following with no luck.

Since you said ids are unique, better you create array like below,

$itemArray = array();

$records = file('/path/to.file/guilds.txt');
foreach ($records as $line) 
{
    $lineArray = explode(',',$line);
    $itemArray[ $lineArray[0] ] = $lineArray;  

   /* Use below if you just want to store name 
      $itemArray[ $lineArray[0] ] = $lineArray[0];  
   */
}

and you can access them easily like below

$id = 24323;
print_r( $itemArray[$id] );

/*You will get below
          Array
          (
            [0] => 24323
            [1] => orange
           )

*/

// and if you want just to print orange then
echo $itemArray[$id][1];   // orange

edited Sep 6, 2017 at 4:44

answered Sep 6, 2017 at 4:40

Akshay Hegde

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4 Comments

Aydin4ik Over a year ago

Why not $itemArray[ $lineArray[0] ] = $lineArray[1];?

Akshay Hegde Over a year ago

@Aydin: see op has edited look at his ids, and OP hasn't made clear so I stored entire array instead of just one element

Aydin4ik Over a year ago

Why not store $itemArray as (23414=>'apple', 24323=>'orange', ...) ? And retrieve it with $itemArray[24323];(will produce 'orange').

Akshay Hegde Over a year ago

@Aydin: please see my edit, you can store, I had put it in comment let OP select whichever he/she want

Orcl_man · Accepted Answer · 2017-09-06 05:04:58Z

0

I think the problem is this, when the text file was read, exploded and pushed into array, each was treated as an individual element of the array which results in array structure like:

$itemArray[0] => 1
$itemArray[1] => Apple
$itemArray[2] => 2
$itemArray[3] => Orange
$itemArray[4] => 3
$itemArray[5] => banana

So I think you should read with index

answered Sep 6, 2017 at 5:04

Orcl_man

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Comments

RomanPerekhrest · Accepted Answer · 2017-09-06 06:58:07Z

0

Short preg_match_all + array_combine functions solution:

preg_match_all('/^(?P<id>[0-9]+),(?P<name>\w+)\s*/m', file_get_contents('/path/to.file/guilds.txt'), $m);
$result = array_combine($m['id'], $m['name']);

print_r($result[24323]);

The output:

orange

answered Sep 6, 2017 at 6:58

RomanPerekhrest

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