curl 下载 图片

function http_get_data($url) {

$ch = curl_init ();
curl_setopt ( $ch, CURLOPT_CUSTOMREQUEST, 'GET' );
curl_setopt ( $ch, CURLOPT_SSL_VERIFYPEER, false );
curl_setopt ( $ch, CURLOPT_URL, $url );
ob_start ();
curl_exec ( $ch );
$return_content = ob_get_contents ();
ob_end_clean ();

$return_code = curl_getinfo ( $ch, CURLINFO_HTTP_CODE );
return $return_content;
}

$return_content = http_get_data($url);
$filename = './test.jpg';
$fp= @fopen($filename,"a"); 
fwrite($fp,$return_content); //写入文件