[英]Read Json Object Using PHP
我正在嘗試使用php讀取json對象,如下所示
$jsonObject = file_get_contents("http://10.12.12.189:9080/NonMotorServices/CommonServices.svc/FetchCurrency");
$jsonres = json_decode($jsonObject, true);
以下是對象的內容
{"Data":"[{\"CurrencySymbol\":\"AU$\",\"CurrencyDescription\":\"Austrailian Dollar\",\"CurrencyRate\":135.42,\"CurrencyType\":\"AUD\",\"RequestDate\":\"\\\/Date(1408041000000)\\\/\",\"PolicyId\":\"\",\"QuotationId\":0,\"SellingRate\":135.42},{\"CurrencySymbol\":\"£.\",\"CurrencyDescription\":\"British pound sterling\",\"CurrencyRate\":212.62,\"CurrencyType\":\"GBP\",\"RequestDate\":\"\\\/Date(1408041000000)\\\/\",\"PolicyId\":\"\",\"QuotationId\":0,\"SellingRate\":212.62},{\"CurrencySymbol\":\"EURO\",\"CurrencyDescription\":\"Euro\",\"CurrencyRate\":171.2,\"CurrencyType\":\"EUR\",\"RequestDate\":\"\\\/Date(1408041000000)\\\/\",\"PolicyId\":\"\",\"QuotationId\":0,\"SellingRate\":171.2},{\"CurrencySymbol\":\"¥.\",\"CurrencyDescription\":\"Japanese yen\",\"CurrencyRate\":1.6809,\"CurrencyType\":\"JPY\",\"RequestDate\":\"\\\/Date(1408041000000)\\\/\",\"PolicyId\":\"\",\"QuotationId\":0,\"SellingRate\":1.6809},{\"CurrencySymbol\":\"SIN$\",\"CurrencyDescription\":\"Singapore Dollar\",\"CurrencyRate\":107.3,\"CurrencyType\":\"SGD\",\"RequestDate\":\"\\\/Date(1408041000000)\\\/\",\"PolicyId\":\"\",\"QuotationId\":0,\"SellingRate\":107.3},{\"CurrencySymbol\":\"Rs.\",\"CurrencyDescription\":\"Sri Lankan Rupees\",\"CurrencyRate\":1,\"CurrencyType\":\"LKR\",\"RequestDate\":\"\\\/Date(1408041000000)\\\/\",\"PolicyId\":\"\",\"QuotationId\":0,\"SellingRate\":1},{\"CurrencySymbol\":\"CHF\",\"CurrencyDescription\":\"Swiss Frank\",\"CurrencyRate\":141.71,\"CurrencyType\":\"CHF\",\"RequestDate\":\"\\\/Date(1408041000000)\\\/\",\"PolicyId\":\"\",\"QuotationId\":0,\"SellingRate\":141.71},{\"CurrencySymbol\":\"US$.\",\"CurrencyDescription\":\"United States dollar\",\"CurrencyRate\":135,\"CurrencyType\":\"USD\",\"RequestDate\":\"\\\/Date(1408041000000)\\\/\",\"PolicyId\":\"\",\"QuotationId\":0,\"SellingRate\":137}]","ID":1}
我需要在html選擇中列出貨幣,我用下面的方法列出了貨幣。
echo '<select>';
foreach($jsonres->Data as $option)
{ echo '<option value=' . $option->CurrencyDescription . '>' . $option->CurrencyDescription . '</option>';
}
echo '</select>';
結果我得到一個空選擇,我需要加載'CurrencyDescription'作為選項值。 請幫我解決一下這個。 並請解釋我犯了什么錯誤,因為我是php和json的新手。
完整代碼如下
<?php
$jsonObject = file_get_contents("http://10.12.12.189:9080/NonMotorServices/CommonServices.svc/FetchCurrency");
$jsonres = json_decode($jsonObject, true);
echo '<select>';
foreach($jsonres->Data as $option)
{ echo '<option value=' . $option->CurrencyDescription . '>' . $option->CurrencyDescription . '</option>';
}
echo '</select>';
?>
$jsonres
實際上是一個數組。
這是因為將true
作為第二個參數傳遞給json_decode
。 實際上,如果您確實希望$jsonres
成為對象,則只需使用json_decode($jsonObject);
。
一種簡單的檢查變量包含內容的方法是使用var_dump
函數。
$jsonres = json_decode($jsonObject);
var_dump($jsonres);
另外,請確保已打開error_reporting並將其設置為E_ALL。 以下代碼$jsonres->Data
應當使PHP發出“ PHP通知”。
最后,我解決了問題。 這是我的解決方案
<select>
<?php
$jsonObject = file_get_contents("http://10.12.12.189:9080/NonMotorServices/CommonServices.svc/FetchCurrency");
$jsonres = json_decode($jsonObject,true);
$val = $jsonres['Data'];
$phpArray = json_decode($val, true);
foreach ($phpArray as $key => $value) {
$curName;
foreach ($value as $k => $v) {
if($k === 'CurrencyDescription'){
$curName=$v;}
}
echo '<option value=' . $curName. '>' . $curName. '</option>';
}
?>
</select>
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