php 错误显示长度,PHP套接字 - 错误的结果长度 - 其他字符

我正在使用以下功能：

function createSocket($host, $script, $request, $method="POST", $port="8080") {

$request_length = strlen($request);

$output="";

$script .= "?$request";

//echo "host=".Middle_Tier;

$header = "$method $script HTTP/1.1\r\n";

$header .= "Host: $host\r\n";

$header .= "Content-Type: application/x-www-form-urlencoded\r\n";

$header .= "Content-Length: $request_length\r\n";

$header .= "Connection: close\r\n\r\n";

$header .= "$request\r\n";

$socket = fsockopen($host, $port, $errno, $errstr);

if ($socket) //if its open, then...

{

fputs($socket, $header); // send the details over

while(!feof($socket)) {

$output[] = fgets($socket); //get the results

}

return $output;

fclose($socket);

}

else {

return false;

}

}

$host = 'my host';

$script = 'path/to/my/function';

$request = "phone=$phone&city_id=$city_id";

$arr = createSocket($host, $script, $request, $method="POST", $port="8080");我从我的目的地得到这个结果：

$arr[9] = unavailable当我打印时：

strlen($arr[9]);输出是14(即3个附加字符)