[英]How can I resolve the “Resource ID #8” error message in MYSQL/PHP?
[英]How can i resolve this php mysql loop?
<?
$sql = dbquery("SELECT `id`, `title`, `description` FROM `content` LIMIT 0,12 ");
while ($row = mysql_fetch_array($sql)) {
$id = $row["id"];
$title = $row["title"];
$description = $row["description"];
$content = '
<div class="description-box">
<p>page id: ' . $id . '</p>
<p>' . $title . '</p>
<p>' . $description . '</p>
</div>';
}
echo $content;
?>
//注意:div class =“ description-box”
//如何在每3個div輸出之后將其替換為:div class =“ description-box nopadding”?
html生成的代碼示例:
<div class="description-box nopadding">
// content
</div>
<div class="description-box">
// content
</div>
<div class="description-box">
// content
</div>
<div class="description-box">
// content
</div>
//再加上nopadding
的div
<div class="description-box'.(($c++%3==0)?' nopadding':'').'">
記得初始化$c
很簡單:
如果$c
除以3的余數等於0,則添加' nopadding'
字符串,否則添加''
stirng
0 % 3 == 0 // add
1 % 3 == 1
2 % 3 == 2
3 % 3 == 0 // add
4 % 3 == 1
...
句法:
echo true ? "it's true" : "it's false"; // it's true
echo (5 % 3); // 2, remainder of 5/3 division
$c = 0;
echo $c++; // 0
echo $c; // 1
<?
$sql = dbquery("SELECT `id`, `title`, `description` FROM `content` LIMIT 0,12 ");
$counter = 0;
while($row = mysql_fetch_array($sql)){
$id = $row["id"];
$title = $row["title"];
$description = $row["description"];
if($counter%3 == 0)
{
$div = '<div class="description-box nopadding">'
}
else
{
$div = '<div class="description-box">';
}
content = $div.'
<p>page id: '.$id.'</p>
<p>'.$title.'</p>
<p>'.$description.'</p>
</div>';
$counter++;
}
echo $content; ?>
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