[英]Using a PHP foreach loop within another foreach loop
我試圖用數據庫中的行填充表。 但是,列之一是一個下拉列表,需要使用多個值填充該下拉列表,因此需要使用fetchAll。 但是,我遇到了麻煩,因為我在另一個foreach構造內部使用了一個foreach構造。
我猜這是不可能的,還是我做錯了什么? 如何找到一種解決方法,以便既可以填充整個表,又可以使用多個值填充下拉列表,但仍將其默認設置為數據庫中的值?
<?php
$sql = "SELECT TOP 100 *
FROM Table_OS_List
ORDER BY [CURRENT_SKU] ASC";
$drops = "SELECT [Purchasing_Group]
FROM Table_OS_List
GROUP BY [Purchasing_Group]";
$drop = $dbh->query($drops);
?>
<?php
/* Foreach loop that brings in information to populate table */
foreach ($dbh->query($sql) as $rows) {
?>
<tr class="row">
<td class="old_sku" id="old_sku"><?php echo intval ($rows['OLD_SKU'])?></td>
<td class="current_sku" id="current_sku"><?php echo intval ($rows['CURRENT_SKU'])?></td>
<td class="id" id="id" style="display: none;"><?php echo intval ($rows['ID'])?></td>
<td class="dropdown-select" id="purchgroup">
<select id="selected_group" class="selected_group" disabled>
<?php foreach($drop->fetchAll() as $dropdown) { ?>
<option class="choice" value="Purchasing Group"><?php echo $dropdown['Purchasing_Group'];?></option>
<?php } ?>
</select>
</td>
<td><input type="button" class="edit" name="edit" value="Edit"></td>
<td><input type="button" class="delete" name="delete" id="<?php echo intval ($rows['ID'])?>" value="Delete"></td>
</tr>
<?php
}
?>
注意:此代碼正確填充了整個表,但是如果我需要選擇其他內容,則下拉列表僅包含每一行中的值,並且不填充其他值選項:
<?php
/* Foreach loop that brings in information to populate table */
foreach ($dbh->query($sql) as $rows) {
?>
<tr class="row">
<td class="old_sku" id="old_sku"><?php echo intval ($rows['OLD_SKU'])?></td>
<td class="current_sku" id="current_sku"><?php echo intval ($rows['CURRENT_SKU'])?></td>
<td class="id" id="id" style="display: none;"><?php echo intval ($rows['ID'])?></td>
<td class="dropdown-select" id="purchgroup">
<select id="selected_group" class="selected_group" disabled>
<option class="choice" value="Purchasing Group"><?php echo $rows['Purchasing_Group'];?></option>
</select>
</td>
<td><input type="button" class="edit" name="edit" value="Edit"></td>
<td><input type="button" class="delete" name="delete" id="<?php echo intval ($rows['ID'])?>" value="Delete"></td>
</tr>
<?php
}
?>
編輯:
即使該行不應為Bowling Green,每個下拉列表也會自動默認為Bowling Green。 大多數行位於東南或密歇根州,但不管是什么行,由於某種原因,它默認為Bowling Green
是的,做錯了,您正在使用外部foreach的第一次迭代完成時使用第二個結果集,因此取而代之的是將下拉內容檢索到數組中,以便可以多次重用它
<?php
$sql = "SELECT TOP 100 *
FROM Table_OS_List
ORDER BY [CURRENT_SKU] ASC";
$drops = "SELECT [Purchasing_Group]
FROM Table_OS_List
GROUP BY [Purchasing_Group]";
$drop = $dbh->query($drops);
$allDrops = $drop->fetchAll();
?>
<?php
/* Foreach loop that brings in information to populate table */
foreach ($dbh->query($sql) as $rows) {
?>
<tr class="row">
<td class="old_sku" id="old_sku"><?php echo intval ($rows['OLD_SKU'])?></td>
<td class="current_sku" id="current_sku"><?php echo intval ($rows['CURRENT_SKU'])?></td>
<td class="id" id="id" style="display: none;"><?php echo intval ($rows['ID'])?></td>
<td class="dropdown-select" id="purchgroup">
<select id="selected_group" class="selected_group" disabled>
<?php
foreach($allDrops as $dropdown) {
//--------------^^^^^^^^^
// Also changed the way you fill the option tag below
?>
<option class="choice"
value="<?php echo $dropdown['Purchasing_Group'];?>">
<?php echo $dropdown['Purchasing_Group'];?>
</option>
<?php } ?>
</select>
</td>
<td><input type="button" class="edit" name="edit" value="Edit"></td>
<td><input type="button" class="delete" name="delete" id="<?php echo intval ($rows['ID'])?>" value="Delete"></td>
</tr>
<?php
}
?>
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