我想在一个页面上运行两个单独的foreach循环,但只写一次我的SQL。例如,请参阅下面的代码,只有第一次运行的id为ul,第二次ul为空。
<?php
$mylist = 'SELECT * FROM myTable';
$showlist = $pdo->prepare($mylist);
$showlist->execute();
?>
<ul id="first">
<?php foreach ($showlist as $rowid):;?>
<li><?php echo $rowid['id'] ?></li>
<?php endforeach; ?>
</ul>
<ul id="second">
<?php foreach ($showlist as $rowname):;?>
<li><?php echo $rowname['name'] ?></li>
<?php endforeach; ?>
</ul>
我认为重命名as会允许我再次使用它但这似乎并非如此?这里最好的方法是什么?
答案 0 :(得分:2)
尝试:
<?php
$mylist = 'SELECT * FROM myTable';
$showlist = $pdo->prepare($mylist);
$showlist->execute();
$result = $showlist->fetchAll();
foreach ($result as $rowid) {
// do stuff
}
foreach ($result as $rowname) {
// do stuff
}
答案 1 :(得分:1)
首先需要将元素堆叠在一个额外的数组中:
$mylist = 'SELECT * FROM myTable';
$showlist = $pdo->prepare($mylist);
$showlist->execute();
$rows = array();
foreach($showlist as $row) {
array_push($rows, $row);
}
echo "<ul>";
foreach($rows as $row) {
echo "<li>".$row['id']."</li>";
}
echo "</ul><ul>";
foreach($rows as $row) {
echo "<li>".$row['name']."</li>";
}
echo "</ul>";