[英]How to convert html table columns to table rows, dom object, php
我有一個html表,我想將其列轉換為行。 列可以包含計划文本,表單元素(輸入,選擇,復選框)或html標簽(span,div)。 考慮以下html:
<html>
<body>
<table>
<tr>
<td>Cell 1</td>
<td>Cell 2</td>
<td>Cell 3</td>
</tr>
<tr>
<td>Cell 4</td>
<td>Cell 5</td>
<td>Cell 6</td>
</tr>
</table>
</body>
</html>
dom操作后,我需要以下內容:
<html>
<body>
<table>
<tr>
<td>Cell 1</td>
</tr>
<tr>
<td>Cell 2</td>
</tr>
<tr>
<td>Cell 3</td>
</tr>
<tr>
<td>Cell 4</td>
</tr>
<tr>
<td>Cell 5</td>
</tr>
<tr>
<td>Cell 6</td>
</tr>
</table>
</body>
</html>
$rows = $xpath->query('xpath to table/tr');
foreach ($rows as $row){
$cols = $xpath->query('xpath to table/tr/*');
$row->parentNode->removeChild($row);
foreach ($cols as $col){
$newNode = $this->createElement('tr');
$newNode->appendChild($col);
$node->appendChild($newNode);
}
}
echo $dom->saveHTML();
它的工作正常,但添加了空行:
<table>
<tr></tr>
<tr></tr>
<tr>
<td>Cell 1</td>
</tr>
<tr>
<td>Cell 2</td>
</tr>
<table>
知道我在做什么錯嗎?
您可以使用DOM解析HTML和XML,這是讀取表的方式:
$dom = new DOMDocument;
$dom->loadHTML( $table );
$tds = array();
foreach( $dom->getElementsByTagName( 'td' ) as $td ) {
$tds[] = $td->nodeValue;
}
要打印展平的結構:
foreach($tds as $td){
print '<td>'.$td.'</td>';
}
您可以將每個<td>
元素移動到其當前祖先<table>
元素的新<tr>
子元素中:
foreach($xpath->query('//td') as $td)
$xpath->query('ancestor::table[1]', $td)->item(0)
->appendChild($doc->createElement('tr'))->appendChild($td);
{{;;}}
之后,您可以刪除不再具有任何<td>
子級的所有<tr>
元素:
foreach($xpath->query('//tr[0 = count(td)]') as $tr)
$tr->parentNode->removeChild($tr);
{{;;}}
您的文檔現已轉換:
<table>
<tr><td>Cell 1</td></tr>
<tr><td>Cell 2</td></tr>
<tr><td>Cell 3</td></tr>
<tr><td>Cell 4</td></tr>
<tr><td>Cell 5</td></tr>
<tr><td>Cell 6</td></tr>
</table>
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