php merge json arrays into one array

Question

I am trying to loop through some json files, and combine them into one json file. My plan is to have a global `$allData` array, and just merge new candidates into them. ``` "; $source_file = file_get_contents('./json/'.$entry); $data = json_decode($source_file,TRUE); if($data != null){ $allData = array_merge($allData,$data); echo "

!!!!

"; print_r($allData); } else{ echo "Invalid Json File"; } //end else } closedir($handle); } echo "

!!!!

"; print_r($allData); ``` However, the merge is overwriting the file. How can I combine multiple json files into one? I would like the following result: 1.json: ``` {"date":"10"},{"comment":"some comment"},{"user":"john"} ``` 2.json: ``` {"date":"11"},{"comment":"another quote"},…

Accepted Answer

Your merge is odd:

```
$result = array_merge($allData,$data);
```

You want to be merging each new `$data` array onto a growing `$allData` array right? I think you want to do this instead:

```
$allData = array_merge($allData,$data);
```

Also you can get rid of this, it's not necessary.

```
if($count == 0){
    $allData = $data;
}
```

php merge json arrays into one array

Solution

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