- [Exchange Properties](./examples/php/) ```php 2) { $id = $argv[1]; $exchange_found = in_array ($id, $exchanges); if ($exchange_found) { echo 'Instantiating ', $id, ' exchange', "\n"; $symbol = $argv[2]; // instantiate the exchange by id $exchange = '\\ccxt\\' . $id; $exchange = new $exchange(array( // 'verbose' => true, // uncomment for debug output // set custom headers if needed // 'headers' => array( // 'YOUR_HEADER' => 'YOUR_VALUE', // ), )); // load all markets from the exchange $markets = $exchange->load_markets (); // you can also set any of the exchange properties after instantiation // $exchange->verbose = true; $ticker = $exchange->fetch_ticker ($symbol); // output a list of all market symbols print_r ($ticker); } else { echo 'Exchange ', $id, ' not found', "\n"; print_supported_exchanges (); } } else { echo 'Usage: php -f ', __FILE__, ' id symbol', "\n"; print_supported_exchanges (); } ?> ```