[英]Retrieving data from curl and json_decode
我试图从 curl 和 json_decode 结果中提取单个数据字符串,但无法正确定位数组元素:
应用程序接口:
$ch = curl_init($uri);
curl_setopt($ch, CURLOPT_HTTPHEADER, array('apisign:'.$sign));
$execResult = curl_exec($ch);
$obj = json_decode($execResult);
结果:
{"success":true,"message":"","result":{"Bid":0.04350003,"Ask":0.04395399,"Last":0.04350003}}
PHP:
echo 'Bid: '.$obj['result']['Bid'].'<br/>';
echo 'Ask: '.$obj['result']['Ask'].'<br/>';
echo 'Last: '.$obj['result']['Last'].'<br/>';
还试过:
echo 'Bid: '.$obj['Bid'].'<br/>';
echo 'Ask: '.$obj['Ask'].'<br/>';
echo 'Last: '.$obj['Last'].'<br/>';
您需要在 json_decode 中添加一个 true 参数
喜欢
json_decode($execResult, true);
否则你会得到一个带有解码数据的 stdObject 。
那么你应该可以使用 $obj['result']['Bid'] aso。
json_decode
的使用有一个可选的第二个参数 - 布尔值 - 将数据作为对象或数组返回。
{"success":true,"message":"","result":{"Bid":0.04350003,"Ask":0.04395399,"Last":0.04350003}}
$obj = json_decode( $execResult ); /* will return an object */
echo $obj->result->Bid;
$obj = json_decode( $execResult, true ); /* will return an array */
echo $obj['result']['Bid'];
刚刚运行这个作为测试..
$data='{"success":true,"message":"","result":{"Bid":0.04350003,"Ask":0.04395399,"Last":0.04350003}}';
$obj = json_decode( $data ); /* will return an object */
echo $obj->result->Bid;
$obj = json_decode( $data, true ); /* will return an array */
echo $obj['result']['Bid'];
其中显示:
0.043500030.04350003
使用这种方式:
echo 'Bid: '.$obj->result->Bid.'<br/>';
echo 'Ask: '.$obj->result->Ask.'<br/>';
echo 'Last: '.$obj->result->Last.'<br/>';
让
$json = '{"success":true,"message":"","result":{"Bid":0.04350003,"Ask":0.04395399,"Last":0.04350003}}';
$obj = json_decode($json, true);// decode and convert it in array
echo 'Bid: '.$obj['result']['Bid'].'<br/>';
echo 'Ask: '.$obj['result']['Ask'].'<br/>';
echo 'Last: '.$obj['result']['Last'].'<br/>';
尝试使用json_decode($string, true);
作为数组
$ch = curl_init($uri);
curl_setopt($ch, CURLOPT_HTTPHEADER, array('apisign:'.$sign));
$execResult = curl_exec($ch);
$obj = json_decode($execResult, true);
echo 'Bid: '.$obj['result']['Bid'].'<br/>';
echo 'Ask: '.$obj['result']['Ask'].'<br/>';
echo 'Last: '.$obj['result']['Last'].'<br/>';
或使用json_decode($string);
作为对象
$ch = curl_init($uri);
curl_setopt($ch, CURLOPT_HTTPHEADER, array('apisign:'.$sign));
$execResult = curl_exec($ch);
$obj = json_decode($execResult);
echo 'Bid: '.$obj->result->Bid.'<br/>';
echo 'Ask: '.$obj->result->Ask.'<br/>';
echo 'Last: '.$obj->result->Last.'<br/>';
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