我的HTML表：
$table = <<< EOD
<table>
<tbody>
<tr style="border:none;">
<td>1</td>
<td>[[name_21]]</td>
<td>[[charge_2]]</td>
</tr>
<tr style="border:1px solid #aaa;">
<td>2</td>
<td>[[name_13]]</td>
<td>[[charge_5]]</td>
</tr>
<tr style="border:1px solid #ccc;">
<td>3</td>
<td>[[name_24]]</td>
<td>[[charge_13]]</td>
</tr>
<tr style="border:1px solid #555;">
<td>4</td>
<td>[[name_22]]</td>
<td>[[charge_22]]</td>
</tr>
</tbody>
</table>
EOD;
这就是我获取所有charge_X值的方法。
preg_match_all('/'['[charge_('d+)']']/', $table, $charge_ids);
删除单元格中包含charge_13的表行。
if (isset($charge_ids)) {
if (array_key_exists('1', $charge_ids)) {
$charge_ids = $charge_ids[1];
$table_replaced = $table;
foreach ($charge_ids as $charge_id) {
if ($charge_id == '13') {
// this line is removing table row if condition met in table cell.
$table_replaced = preg_replace('/<tr[^>]*>('['[charge_'.$charge_id.'']'])<'/tr>/iUums', 'a', $table_replaced);
}
}
echo $table_replaced;
}
}
此代码仍然不起作用。如果表格单元格中有charge_13，如何删除表格行？
- 在
td中，可能仅包含charge_X或带有文本的charge_X。例如：<td>[[charge_13]] USD</td> - charge_X值可能包含不同顺序的表格单元格。例如：
<tr><td>3</td><td>[[charge_13]]</td><td>[[name_24]]</td></tr> - 表格单元格中可能存在unicode文本，例如中文或泰语字符
- 欢迎使用preg_replace或DOMDocument
使用DOMDocument。
$table = <<< EOD
<table>
<tbody>
<tr style="border:none;">
<td>1</td>
<td>[[name_21]]</td>
<td>[[charge_2]]</td>
</tr>
<tr style="border:1px solid #aaa;">
<td>2</td>
<td>[[name_13]]</td>
<td>[[charge_5]]</td>
</tr>
<tr style="border:1px solid #ccc;">
<td>3</td>
<td>[[name_24]]</td>
<td>[[charge_13]]</td>
</tr>
<tr style="border:1px solid #555;">
<td>4</td>
<td>[[name_22]]</td>
<td>[[charge_22]]</td>
</tr>
</tbody>
</table>
EOD;
$dom = new 'DOMDocument();
$dom->loadHTML($table);
$xpath = new 'DOMXPath($dom);
// loop all <tr> element.
foreach ($xpath->query('//tr') as $tr) {
$tds = $tr->getElementsByTagName('td');
// get total <td> in this <tr>
$total_item = $tds->length;
// loop to all <td> and check.
for ($i = 0; $i <= ($total_item-1); $i++) {
// get table cell value.
$table_cell_value = $tds->item($i)->nodeValue;
preg_match('/'['[charge_('d+)']']/', $table_cell_value, $charge_id);
// check if condition is met, the charge_id is 13.
if (is_array($charge_id) && array_key_exists(1, $charge_id) && $charge_id[1] == 13) {
// condition met. charge_id is 13. remove this table row.
$tr->parentNode->removeChild($tr);
}
unset($charge_id, $table_cell_value);
}
unset($tds, $total_item);
}
// get the result
$saved_html = preg_replace('~<(?:!DOCTYPE|/?(?:html|body))[^>]*>'s*~i', '', $dom->saveHTML());
echo $saved_html;