Question

I’m reading an XML data from a PHP input and i’m receving the number 1 instead of the XML data.

the PHP code for reading the XML Data from PHP input:

            $xmlStr="";
            $file=fopen('php://input','r');
            while ($line=fgets($file) !== false) {
              $xmlStr .= $line;
            }
            fclose($file);

the PHP code for sending the XML:

public static function xmlPost($url,$xml) {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_VERBOSE, 1); // set url to post to
    curl_setopt($ch, CURLOPT_URL, $url); // set url to post to
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); // return into a variable
    curl_setopt($ch, CURLOPT_HTTPHEADER, Array("Content-Type: text/xml"));
    curl_setopt($ch, CURLOPT_HEADER, 1);
    curl_setopt($ch, CURLOPT_TIMEOUT, 40); // times out after 4s
    curl_setopt($ch, CURLOPT_POSTFIELDS, $xml); // add POST fields
    curl_setopt($ch, CURLOPT_POST, 1);
    $result=curl_exec ($ch);
    return $result;
}

no matter what XML i’m sending, the receiving end is getting the number 1 instead
of the XML data. any ideas?

any information regarding the issue would be greatly appreciated.

update

the following code works:

$xmlStr = file_get_contents('php://input');

but why my code doesn’t ?
why my code returns 1 instead of the actual xml ?

Answer 1

Though I’d suggest using file_get_contents, too, to answer your question:
Because of operator precedence the line

while ($line=fgets($file) !== false)

doesn’t work the way you want it to. The result of the comparison fgets($file) !== false is assigned to $line. When you append it to $xmlStr the boolean value is cast to string. Since the condition of the while loop is that $line is true (string)$line will always be 1 “within” that loop.
You’d need

while ( ($line=fgets($file)) !== false)

to change the precedence