Php json _decode function returns null on long data

Question

I pull data from a json file on the remote server. This json file has 97000 Lines of json code. It returns null when I decode the Json file. When I debug the Json errors, I see that there is no error.

Json file : https://opendata.ecdc.europa.eu/covid19/casedistribution/json/

$json = file_get_contents("https://opendata.ecdc.europa.eu/covid19/casedistribution/json/");
$json =  json_decode($json, true);
var_dump($json); // Return Null

But when I decode another json file there is no error

$json = file_get_contents("https://randomuser.me/api/");
$json =  json_decode($json, true);
var_dump($json); // Return Array

Could this be due to the size of the data?

Thanks for advance

When I check for errors (json_last_error_msg()), I get "Syntax error"… — deceze
– deceze ♦, Commented Apr 1, 2020 at 15:18
If there is an error, you should include it in the question. — Aioros
– Aioros, Commented Apr 1, 2020 at 15:19

deceze · Accepted Answer · 2020-04-01 15:23:21Z

4

The file starts with a BOM, which is a syntax error for json_decode.

Ultimately this should be fixed by the host, as a workaround you can strip the first three bytes:

if (substr($json, 0, 3) == "\xEF\xBB\xBF") {
    $json = substr($json, 3);
}

answered Apr 1, 2020 at 15:23

deceze♦

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