PHP，卷曲。curl_exec 返回什么？
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PHP, CURL. What does curl_exec return?
提问by shadyhossin
I'm trying to set an API with a payment processor. Below is the code they provided me. There are some information in the $result variable that I want, what I don't understand is what type of variable is '$result' and how can I take certain data from it. printing the $result shows "Transaction ID is : xxxx status is ACCEPTED". What I basicly want is to take only the transaction ID and store it in a variable.
我正在尝试使用支付处理器设置 API。下面是他们提供给我的代码。$result 变量中有一些我想要的信息，我不明白的是什么类型的变量是 '$result' 以及如何从中获取某些数据。打印 $result 显示“交易 ID 为：xxxx 状态为接受”。我基本上想要的是只获取交易 ID 并将其存储在一个变量中。
foreach($_POST as $k=>$v) $$k=urldecode($v);
$urladdress = "https://example.com/accapi/process.php";
$api_id = "dddd";
$api_pwd = "yyyyy";
$api_pwd = md5($api_pwd.'s+E_a*');
$data = "user=".$user. "&testmode=".$testmode."&api_id=".$api_id. "&api_pwd=".$api_pwd."&amount=".$amount."&paycurrency=".$currency."&comments=".$comments."&fee=".$fee."&udf1=".$udf1;
// Call STP API
$ch = curl_init(); curl_setopt($ch, CURLOPT_URL,"$urladdress");
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HEADER, 0); //use this to suppress output
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER,false);// tell cURL to graciously accept an SSL certificate
$result = curl_exec ($ch) or die(curl_error($ch));
echo $result;
echo curl_error($ch);
curl_close ($ch);
Thank you for your help
感谢您的帮助
回答by hek2mgl
From the manual:
从手册：
Returns TRUE on success or FALSE on failure. However, if the CURLOPT_RETURNTRANSFER option is set, it will return the result on success, FALSE on failure.
成功时返回 TRUE，失败时返回 FALSE。但是，如果设置了 CURLOPT_RETURNTRANSFER 选项，它将在成功时返回结果，在失败时返回 FALSE。
Your code already contains this line (which is good):
您的代码已经包含这一行（这很好）：
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
The 1means you will receive an explanatory result back from $result = curl_exec ($ch)instead of just trueor false.
这1意味着您将收到一个解释性结果，$result = curl_exec ($ch)而不仅仅是true或false。
Your error checking code could therefore look like:
因此，您的错误检查代码可能如下所示：
$result = curl_exec ($ch);
if($result === FALSE) {
die(curl_error($ch));
}
You can also check they type of variable returned via var_dump: var_dump($result).
您还可以检查它们通过var_dump返回的变量类型：var_dump($result)。
