如何使用 cURL/PHP 将当前 twitter 趋势主题转储到 mySQL

Question

尝试每隔几个小时运行一次读取此处列出的当前 Twitter 趋势主题的 cron 作业：

http://search.twitter.com/trends.json

然后将前 10 个趋势转储到我服务器上的 mySQL 表中

如何做到这一点？谢谢

Answer 1

这里有几个可以帮助你的建议：

要使用curl：您需要initialize一个连接，configure它，和execute它。

例如，这样的事情可能会做（非常基本的例子）：

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, "http://search.twitter.com/trends.json");
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

$json = curl_exec($ch);

curl_close($ch);

// $json contains the data you want
var_dump($json);

你会得到这样的输出：

string '{"as_of":"Fri, 21 Aug 2009 20:59:54 +0000","trends":[{"name":"Follow Friday","url":"http:\/\/search.twitter.com\/search?q=%22Follow+Friday%22"},{"name":"#BrutalLegend","url":"http:\/\/search.twitter.com\/search?q=%23BrutalLegend"},{"name":"#shoutout","url":"http:\/\/search.twitter.com\/search?q=%23shoutout"},{"name":"#fact","url":"http:\/\/search.twitter.com\/search?q=%23fact"},{"name":"Inglourious","url":"http:\/\/search.twitter.com\/search?q=Inglourious"},{"name":"Which Horror Movie","url":"http:\/\/search.twitter.com\/search?q=%22Which+Horror+Movie%22"},{"name":"Cataclysm","url":"http:\/\/search.twitter.com\/search?q=Cataclysm"},{"name":"Inglourious Basterds","url":"http:\/\/search.twitter.com\/search?q=%22Inglourious+Basterds%22+OR+%22Inglorious+Basterds%22"},{"name":"District 9","url":"http:\/\/search.twitter.com\/search?q=%22District+9%22"},{"name":"Twitter Besides","url":"http:\/\/search.twitter.com\/search?q=%22Twitter+Besides%22"}]}' (length=955)

当然，您可能还想设置几个其他选项；如需完整列表，请查看curl_setopt 的文档。

解析 JSON 字符串：

如果你使用 PHP >= 5.2，你可以使用json_decode 来解析 json 数据：

$data = json_decode($json);

var_dump($data);

然后你会得到这样的东西：

object(stdClass)[1]
  public 'as_of' => string 'Fri, 21 Aug 2009 21:01:48 +0000' (length=31)
  public 'trends' => 
    array
      0 => 
        object(stdClass)[2]
          public 'name' => string 'Follow Friday' (length=13)
          public 'url' => string 'http://search.twitter.com/search?q=%22Follow+Friday%22' (length=54)
      1 => 
        object(stdClass)[3]
          public 'name' => string '#BrutalLegend' (length=13)
          public 'url' => string 'http://search.twitter.com/search?q=%23BrutalLegend' (length=50)
      2 => 
        object(stdClass)[4]
          public 'name' => string '#shoutout' (length=9)
          public 'url' => string 'http://search.twitter.com/search?q=%23shoutout' (length=46)
      3 => 
        object(stdClass)[5]
          public 'name' => string '#fact' (length=5)
          public 'url' => string 'http://search.twitter.com/search?q=%23fact' (length=42)
      4 => 
        object(stdClass)[6]
          public 'name' => string 'Inglourious' (length=11)
          public 'url' => string 'http://search.twitter.com/search?q=Inglourious' (length=46)
      5 => 
        object(stdClass)[7]
          public 'name' => string 'Cataclysm' (length=9)
          public 'url' => string 'http://search.twitter.com/search?q=Cataclysm' (length=44)
      6 => 
        object(stdClass)[8]
          public 'name' => string 'Which Horror Movie' (length=18)
          public 'url' => string 'http://search.twitter.com/search?q=%22Which+Horror+Movie%22' (length=59)
      7 => 
        object(stdClass)[9]
          public 'name' => string 'Inglourious Basterds' (length=20)
          public 'url' => string 'http://search.twitter.com/search?q=%22Inglourious+Basterds%22+OR+%22Inglorious+Basterds%22' (length=90)
      8 => 
        object(stdClass)[10]
          public 'name' => string 'District 9' (length=10)
          public 'url' => string 'http://search.twitter.com/search?q=%22District+9%22' (length=51)
      9 => 
        object(stdClass)[11]
          public 'name' => string 'Hurricane Bill' (length=14)
          public 'url' => string 'http://search.twitter.com/search?q=%22Hurricane+Bill%22' (length=55)

这包含从 twitter 获得的全部数据。

将数据插入数据库：

现在，您必须遍历这个“趋势”数组，并且对于每一行，将其插入到您的 MySQL 数据库中。

为此，您可以使用：

• mysqli
• 或PDO

使用准备好的语句也可能有帮助 (mysqli, pdo) ;-)
无论如何，如果您不使用准备好的语句，则必须使用mysqli_real_escape_string 或PDO::quote 转义数据。

在这里，您当然需要已经有一个表格，并且结构正确；我还假设您知道如何在 MySQL 表中插入数据。

如果您有更具体的问题，请随时提出一些您正在使用但不起作用的代码示例（当然还有说明什么不起作用/您收到的错误消息) ！

玩得开心！

Answer 2

<?php

$curl = curl_init();
curl_setopt_array($curl, Array(
    /* CURLOPT_HEADER         => true,
    CURLOPT_POSTFIELDS     => $postdata,
    CURLOPT_POST           => $method == 'POST',
    CURLOPT_HTTPHEADER     => $headers,
    CURLOPT_USERAGENT      => "Mozil.....", */
    CURLOPT_URL            => "http://search.twitter.com/trends.json",
    CURLOPT_TIMEOUT        => 300,
    CURLOPT_CONNECTTIMEOUT => 60,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_SSL_VERIFYHOST => false,
    CURLOPT_SSL_VERIFYPEER => false,
    CURLOPT_ENCODING       => 'gzip,deflate'
));
$json = curl_exec($curl);
$json = json_decode($json);
echo "<pre>";
print_r($json);

?> 玩得开心。