这是我的流程
$sec_id = implode(', ', $_POST['sec_id']);
$stmtSec = $crud->runQuery("SELECT * FROM tbl_section WHERE sec_id IN (':sec_id')");
$stmtSec->execute(array(":sec_id" => $sec_id));
while ($rowSec = $stmtSec->fetch(PDO::FETCH_ASSOC))
{
$section[] = $rowSec['section'];
}

但是没有任何内容可以使用我的代码。
这是我的多选代码。
<select name="sec_id[]" data-live-search="true" class="selectpicker form-control border-input" style="text-align-last:center;" title="Select Section" required multiple>
<?php
$stmtSection = $crud->runQuery('SELECT * FROM tbl_section ORDER BY sec_id DESC');
$stmtSection->execute();
while($rowSection=$stmtSection->fetch(PDO::FETCH_ASSOC))
{
print("<option value='".$rowSection['sec_id']."'>".$rowSection['section']."</option>");
}
?>
</select>
&#13;
还有另一种在数据库中选择多个的方法吗?还是查询? 请帮忙。
答案 0 :(得分:1)
这里我已经包含并更新了代码。
$sec_id = implode(', ', $_POST['sec_id']);
$stmtSec = $crud->runQuery("SELECT * FROM tbl_section WHERE sec_id IN (':sec_id')");
$stmtSec->execute(array(":sec_id" => $sec_id));
while ($rowSec = $stmtSec->fetch(PDO::FETCH_ASSOC)) {
$section[] = $rowSec['sec_id'];
}
$stmtSection = $crud->runQuery('SELECT * FROM tbl_section ORDER BY sec_id DESC');
$stmtSection->execute();
while($rowSection=$stmtSection->fetch(PDO::FETCH_ASSOC))
{
$optionsSelected = in_array($rowSection['sec_id'], $section) ? 'selected="selected"' : '';
print("<option'" . $optionsSelected . "'value='".$rowSection['sec_id']."'>".$rowSection['section']."</option>");
}