json_decode foreach into table - php

Question

Having Issues with nested arrays
I want to get the array title into the first cell of the table, having an issue articulated the nested foreach.
$content = file_get_contents("https://whattomine.com/asic.json");
$data = json_decode($content);
echo "coins";
foreach()
{
echo "<tr>";
echo "<th>".$coins->coinname."</th>";
echo "<th>".$coins->PoW."</th>";
echo "<th>".$coins->PoS."</th>";
echo "<th>".$coins->height."</th>";
echo "<th>".$coins->diff."</th>";
echo "<th>".$coins->supply."</th>";
echo "</tr>";
}

Answer 1

I've looked into the data and think I found what you want.
BUT you try to get values that are not in the data set.
The structure of that json is:
{"coins":
{"LitecoinCash":
{"id":231,"tag":"LCC",...}
},
...
}
So here's how to get that data:
$data = json_decode($content);
#var_dump($data);
echo "<table>";
foreach($data->coins as $title => $coin)
{
echo $title;
echo "<tr>";
echo "<th>".$title."</th>"; // the title as first cell
echo "<th>".$coin->id."</th>"; // added by me, coinname does not exist
echo "<th>".$coin->tag."</th>"; // added by me, PoW does not exist
#echo "<th>".$coin->PoS."</th>"; // all the others do not exist in the dataset.
#echo "<th>".$coin->height."</th>";
#echo "<th>".$coin->diff."</th>";
#echo "<th>".$coin->supply."</th>";
echo "</tr>";
}
echo "</table>";
// output:
// LitecoinCash 231 LCC

Answer 2

There is not keys you provided, but there is next keys:
example of item:
[LitecoinCash] => [
[id] => 231
[tag] => LCC
[algorithm] => SHA-256
[block_time] => 156.0
[block_reward] => 250
[block_reward24] => 250
[last_block] => 1460137
[difficulty] => 470292855.107
[difficulty24] => 396924068.28117
[nethash] => 12948028411711743
[exchange_rate] => 4.1E-6
[exchange_rate24] => 2.9135097493036E-6
[exchange_rate_vol] => 0.34130528
[exchange_rate_curr] => BTC
[market_cap] => $18,382,732.11
[estimated_rewards] => 149.54924
[estimated_rewards24] => 177.15706
[btc_revenue] => 0.00061315
[btc_revenue24] => 0.00072634
[profitability] => 102
[profitability24] => 121
[lagging] =>
[timestamp] => 1533048969
]
Which of them do you need?