[英]Retrieving data from curl and json_decode
我試圖從 curl 和 json_decode 結果中提取單個數據字符串,但無法正確定位數組元素:
應用程序接口:
$ch = curl_init($uri);
curl_setopt($ch, CURLOPT_HTTPHEADER, array('apisign:'.$sign));
$execResult = curl_exec($ch);
$obj = json_decode($execResult);
結果:
{"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: '.$obj['result']['Last'].'<br/>';
還試過:
echo 'Bid: '.$obj['Bid'].'<br/>';
echo 'Ask: '.$obj['Ask'].'<br/>';
echo 'Last: '.$obj['Last'].'<br/>';
您需要在 json_decode 中添加一個 true 參數
喜歡
json_decode($execResult, true);
否則你會得到一個帶有解碼數據的 stdObject 。
那么你應該可以使用 $obj['result']['Bid'] aso。
json_decode
的使用有一個可選的第二個參數 - 布爾值 - 將數據作為對象或數組返回。
{"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'];
剛剛運行這個作為測試..
$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 $obj['result']['Bid'];
其中顯示:
0.043500030.04350003
使用這種方式:
echo 'Bid: '.$obj->result->Bid.'<br/>';
echo 'Ask: '.$obj->result->Ask.'<br/>';
echo 'Last: '.$obj->result->Last.'<br/>';
讓
$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: '.$obj['result']['Last'].'<br/>';
嘗試使用json_decode($string, true);
作為數組
$ch = curl_init($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);
作為對象
$ch = curl_init($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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