Question

我需要从在线时间表（对于学校）中获取课程到数组中。所以我可以将数据插入我的数据库。在线时间表（网址：roosters-hd.stenden.com）如下所示：

在左手边，我们看到时间，并在最上面的学位（Mo，Tu，We，Th，Fr）。非常基本。

每节课包含6个需要获取的值。

除此之外，我还需要获取[startDate]和[endDate]。时间取决于课程单元所在的行以及它具有多少行距。可以通过在开始日期（在顶部打印）上添加列号来计算日期。所以最后数组看起来像这样：

[0] => Array
        (
            [0] => Array
                (
                    [Name] => Financiering
                    [Type] => WC
                    [Code] => DECBE3
                    [Classroom] => E2.053 - leslokaal
                    [Teacher] => Verboeket, Erik (E)
                    [Class] => BE1F, BE1B, BE1A
                    [StartDate] => 04/06/2013 08:30:00
                    [EndDate] => 04/06/2013 10:00:00
                )
                etc.

由于我缺乏获取数据的经验，我将最终得到一个效率极低且不灵活的解决方案。我应该使用XML解析器吗？还是Regex？关于如何解决这个问题的任何想法？

Answer 1

正则表达方式：

<pre><?php
$html = file_get_contents('the_url.html');

$clean_pattern = <<<'LOD'
~
  # definitions
    (?(DEFINE)
        (?<start>         <!--\hSTART\hOBJECT-CELL\h-->                    ) 
        (?<end>           (?>[^<]++|<(?!!--))*<!--\hEND\hOBJECT-CELL\h-->  )

        (?<next_cell>     (?>[^<]++|<(?!td\b))*<td[^>]*+>  ) 
        (?<cell_content>  [^<]*+                           )
    )

  # pattern
    \g<start>
        \g<next_cell>     (?<Name>      \g<cell_content>   )  
        \g<next_cell>     (?<Type>      \g<cell_content>   )
        \g<next_cell>     (?<Code>      \g<cell_content>   )

        \g<next_cell>     (?<Classroom> \g<cell_content>   )
        \g<next_cell>

        \g<next_cell>     (?<Teacher>   \g<cell_content>   )
        \g<next_cell>     
        \g<next_cell>     (?<Class>     \g<cell_content>   )
    \g<end>
~x
LOD;

preg_match_all($clean_pattern, $html, $matches, PREG_SET_ORDER);

foreach ($matches as $match) {
    echo <<<LOD
    Name: {$match['Name']}
    Type: {$match['Type']}
    Code: {$match['Code']}
    Classroom: {$match['Classroom']}
    Teacher: {$match['Teacher']}
    Class: {$match['Class']}<br/><br/>
LOD;
}

DOM / XPath方式：

$doc = new DOMDocument();
@$doc->loadHTMLFile('the_url.html');
$xpath = new DOMXPath($doc);
$elements = $xpath->query("//*[comment() = ' START OBJECT-CELL ']");
$fields = array('Name', 'Type', 'Code', 'Classroom', 'Teacher', 'Class');
$not_needed = array(10,8,6,1,0);    
foreach ($elements as $element) {
    $temp = explode("\n", $element->nodeValue);
    foreach ($not_needed as $val) { unset($temp[$val]); }
    array_walk($temp, function (&$item){ $item = trim($item); });
    $result[] = array_combine($fields, $temp);
}   
print_r ($result);

将HTML表格元素提取到数组中

1 个答案: