shadyhossin shadyhossin - 3 years ago 317
PHP Question

PHP, CURL. What does curl_exec return?

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.

foreach($_POST as $k=>$v) $$k=urldecode($v);
$urladdress = "";
$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

Answer Source

from the manual:

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.

As your code actually contains the line:

curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

what means that the CURLOPT_RETURNTRANSFER option isset, it will return either a string or false on error. Your error checking code should therefore look like:

$result = curl_exec ($ch);
if($result === FALSE) {
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