Please help me > Parse error: syntax error, unexpected '[', expecting ')' in /home/XXXX/public_html/XXXX/functions.php on line 16 [duplicate]

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  Parse error: syntax error, unexpected '[', expecting ')' [duplicate]
  
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Parse error: syntax error, unexpected '[', expecting ')' in /home/XXXX/public_html/XXXX/functions.php on line 16

Hello need help, do not understand what the problem is on line 16. :'(

//This line 16//
$ctx = stream_context_create(['http'=>['timeout' => 5]]);

//This line 17//
$content = file_get_contents("http://api.steampowered.com/ISteamUser/GetPlayerSummaries/v0002/?key={$config['api_key']}&steamids={$steamId}" , false , $ctx);