[英]How can i extract ul tag content and p tag content inside <dd> tag using regular expresstion in php
[英]How can I extract the content of a <tr> tag in PHP?
我是正則表達式的新手。 我想問一下這個html標簽的正確組合是什么:
<tr class="calendar_row" data-eventid="39654">
<td class="alt1 eventDate smallfont" align="center"/></td>
<td class="alt1 smallfont" align="center">3:34am</td>
<td class="alt1 smallfont" align="center">CNY</td>
</tr>
我用這個:
$html = website html from a url
$match = array();
$pattern = "/(<tr.*?\data-eventid\>.*?<\/tr>)/ims";
preg_match_all($pattern, $html, $match);
但它不起作用:| 我只想選擇那個tr元素的所有內容..
最好的祝福。
你不應該在這樣的事情上使用正則表達式; 而是從您的標記創建一個DOMDocument ,然后從該特定元素中選擇子元素。 例如,以下內容將為您提供標記中每個<td>
標記的集合html:
// Our HTML will eventually go here
$innerHTML = "";
// Create a new DOMDocument based on our HTML
$document = new DOMDocument;
$document->loadHTML($html);
// Get a NodeList of all <td> Elements
$cells = $document->getElementsByTagName("td");
// Cycle over each <td>, adding its HTML to $innerHTML
foreach ($cells as $cell) {
$innerHTML .= $document->saveHTML($cell);
}
// Output our glorious HTML
echo $innerHTML;
如果你真的想要使用preg_match
來獲取tr
標簽之間的內容,則以下內容應該有效:
// Our pattern for capturing all that is between <tr> and </tr>
$pattern = "/<tr[^>]*>(.*)<\/tr>/s";
// If a match is found, store the results in $match
if (preg_match($pattern, $html, $match)) {
// Show the captured value
echo $match[1];
}
其結果如下:
<td class="alt1 eventDate smallfont" align="center"></td>
<td class="alt1 smallfont" align="center">3:34am</td>
<td class="alt1 smallfont" align="center">CNY</td>
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