Question

我使用curl运行SQL查询以在数据库中创建表。这是工作代码：

 // defines the post vars
 $apikey = $_POST['apikey'];
 $username = $_POST['username'];
 $tablename = $_POST['tablename'];

 //SQL create table statment
 $sql = "CREATE TABLE " . (string)$tablename . " (post_id integer, post_title text, post_content text, post_date date, post_type text, permalink_guid text);";
 $sql2 = "SELECT cdb_cartodbfytable('" . (string)$tablename . "');";

 // initializing curl
 $ch = curl_init( "https://".$username.".cartodb.com/api/v2/sql" );
 $query = http_build_query(array('q'=>$sql,'api_key'=>$apikey));
 $query2 = http_build_query(array('q'=>$sql2,'api_key'=>$apikey));

 // configuring curl options
 curl_setopt($ch, CURLOPT_POST, TRUE);
 curl_setopt($ch, CURLOPT_POSTFIELDS, $query);
 curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);

 //result
 $result_jsonstring = curl_exec($ch);
 $result = json_decode($result_jsonstring);
 echo(print_r($result));

使用此代码，我可以获得两个成功的响应。如果表创建成功：

stdClass Object
(
[rows] => Array
    (
    )

[time] => 0.013
[fields] => stdClass Object
    (
    )

[total_rows] => 0
)
1

如果数据库中已存在表名，我会得到：

stdClass Object
(
[error] => Array
    (
        [0] => relation "tablename" already exists
    )

)
1

我还可以成功运行第二个查询，将curl_setopt($ch, CURLOPT_POSTFIELDS, $query);替换为curl_setopt($ch, CURLOPT_POSTFIELDS, $query2);

我遇到的问题是如果第一个查询成功，则运行第二个查询（创建表，但如果表存在则不运行）。以下是我试图完成此操作的代码：

// defines the post vars
$apikey = $_POST['apikey'];
$username = $_POST['username'];
$tablename = $_POST['tablename'];

//SQL create table statment
$sql = "CREATE TABLE " . (string)$tablename . " (post_id integer, post_title text, post_content text, post_date date, post_type text, permalink_guid text);";

// initializing curl
$ch = curl_init( "https://".$username.".cartodb.com/api/v2/sql" );
$query = http_build_query(array('q'=>$sql,'api_key'=>$apikey));

// configuring curl options
curl_setopt($ch, CURLOPT_POST, TRUE);
curl_setopt($ch, CURLOPT_POSTFIELDS, $query);
//curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

//result
$result_jsonstring = curl_exec($ch);

//close the curl session
curl_close($ch);

if (TRUE === $result_jsonstring)
        echo "It was true!";
        echo(print_r($result_jsonstring));

        ch2 = curl_init( "https://".$username.".cartodb.com/api/v2/sql" );
        $sql2 = "SELECT cdb_cartodbfytable('" . (string)$tablename . "');";
        $query2 = http_build_query(array('q'=>$sql2,'api_key'=>$apikey));
        curl_setopt($ch, CURLOPT_POST, TRUE);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $query2);
        //curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

        $result_jsonstring2 = curl_exec($ch2);

        echo(print_r($result_jsonstring2));

        curl_close($ch2);

以下是我遇到的问题： 1）第二个卷曲请求不起作用。我收到一条消息说我必须提供一个SQL查询＆＃34;而且我不确定为什么。我确实得到了＃34;这是真的！＆＃34;但是声明。 2）我在回复结束时继续得到数字1。在最后的案例中，我得到两个（11）。

{"rows":[],"time":0.008,"fields":{},"total_rows":0}It was true!11{"error":["You must indicate a sql query"]}11

如果成功创建表，我怎样才能成功运行第二个curl进程？

Answer 1

将最后两个curl_setop更改为使用$ ch2而不是$ ch。

如何根据第一个流程的结果运行第二个cURL流程？

1 个答案: