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November 3, 2016 12:04
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Atualiza a cotação do dólar com YQL e salva no wp_options
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//cria o wp_cron para checar a cotação a cada hora | |
add_action('wp','brg_agenda_cotacao'); | |
function brg_agenda_cotacao() { | |
if (! wp_next_scheduled ( 'brg_atualiza_cotacao' )) { | |
wp_schedule_event(time(), 'hourly', 'brg_atualiza_cotacao'); | |
} | |
} | |
//função para atualizar a cotação no wp_options | |
add_action('brg_atualiza_cotacao', 'brg_cotacao_dolar'); | |
function brg_cotacao_dolar(){ | |
$url = "https://query.yahooapis.com/v1/public/yql?q=env%20'store%3A%2F%2Fdatatables.org%2Falltableswithkeys'%3B%20select%20*%20from%20yahoo.finance.xchange%20where%20pair%20in%20(%22USDBRL%22)&diagnostics=true&env=store%3A%2F%2Fdatatables.org%2Falltableswithkeys"; | |
$xml_feed_url = $url; | |
$ch = curl_init(); | |
curl_setopt($ch, CURLOPT_URL, $xml_feed_url); | |
curl_setopt($ch, CURLOPT_HEADER, false); | |
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); | |
$xml = curl_exec($ch); | |
curl_close($ch); | |
libxml_use_internal_errors(true); | |
try { | |
$xmlTree = new SimpleXMLElement($xml); | |
} catch (Exception $e) { | |
// Something went wrong. | |
$error_message = 'SimpleXMLElement threw an exception.'; | |
foreach(libxml_get_errors() as $error_line) { | |
$error_message .= "\t" . $error_line->message; | |
} | |
trigger_error($error_message); | |
$xmlTree = false; | |
} | |
if ($xmlTree){ | |
$usd = $xmlTree->results->rate[0]->Rate; | |
$usd = (float)$usd; | |
if ($usd>0){ | |
update_option ('cotacao_dolar',$usd); | |
update_option ('cotacao_atualizada',date('d/m/Y H:i:s')); | |
} | |
} | |
} |
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