PHP使用file_get_contents函数POST数据

function http_post($url,$data = null)

{

$cxContext = NULL;

if($data!=null)

{

$opts = array(

‘http‘=>array(

‘method‘=>"POST",

‘header‘=>"Content-type: application/x-www-form-urlencoded\r\n".

"Content-length:".strlen($data)."\r\n" .

"\r\n",

‘content‘ => $data,

)

);

$cxContext = stream_context_create($opts);

}

$output = file_get_contents($url, false, $cxContext);

return $output;

}