PHP中具有不同div类的循环中的图像
假设我有像贝娄这样的代码PHP中具有不同div类的循环中的图像,php,html,css,loops,Php,Html,Css,Loops,假设我有像贝娄这样的代码 <?php $sql = "SELECT * FROM images"; $query = mysql_query($sql); while($row = mysql_fetch_assoc($query)) { echo '<div class="single">'; echo '<img src="'.$row['image'].'" alt="'.$row['title'].' " />'; echo '&
<?php
$sql = "SELECT * FROM images";
$query = mysql_query($sql);
while($row = mysql_fetch_assoc($query)) {
echo '<div class="single">';
echo '<img src="'.$row['image'].'" alt="'.$row['title'].' " />';
echo '</div>';
}
?>
如何通过循环完成,请帮助
谢谢:这个怎么样:
<?php
$sql = "SELECT * FROM images";
$query = mysql_query($sql);
$x=0;
while($row = mysql_fetch_assoc($query)) {
$x++;
if ( $x == 1 ) { $c = ' first'; }
elseif ( $x == 5 ) { $c = ' last'; }
else { $c = ''; }
echo '<div class="single' . $c . '">';
echo '<img src="'.$row['image'].'" alt="'.$row['title'].' " />';
echo '</div>';
}
?>
$index = 0;
while($row = mysql_fetch_assoc($query)) {
$classes = 'single';
switch ($index % 5) {
case 0:
$classes .= ' first';
break;
case 4:
$classes .= ' last';
break;
}
echo <<<HTML
<div class="$classes">
<img src="{$row['image']}" alt="{$row['title']}" />
</div>;
HTML;
$index++;
}
作为旁注,您考虑过使用CSS第n个子属性吗?您需要计算迭代次数,并使用模函数获得5的部分:
$sql = "SELECT * FROM images";
$query = mysql_query($sql);
$i = 0;
while($row = mysql_fetch_assoc($query)) {
if($i % 5 == 0)
echo '<div class="single first">';
else if($i % 5 == 4)
echo '<div class="single last">';
else
echo '<div class="single">';
echo '<img src="'.$row['image'].'" alt="'.$row['title'].' " />';
echo '</div>';
$i++;
}
使用:
您在$clas='last'处有一个输入错误;您需要在class=single'后面添加一个空格,否则这些类将一起运行,例如class=singlelast。感谢您的回答,但它无法显示class=singlelast请帮助查看我的编辑-检查last,您需要检查$i%5==4而不是==-1-PHP不擅长代数:/谢谢您的回答,但它没有显示class=singlefirstright您是!我已经更新了代码,但看起来您已经开始工作了:
$sql = "SELECT * FROM images";
$query = mysql_query($sql);
$i = 0;
while($row = mysql_fetch_assoc($query)) {
if($i % 5 == 0)
echo '<div class="single first">';
else if($i % 5 == 4)
echo '<div class="single last">';
else
echo '<div class="single">';
echo '<img src="'.$row['image'].'" alt="'.$row['title'].' " />';
echo '</div>';
$i++;
}
<?php
$sql = "SELECT * FROM images";
$query = mysql_query($sql);
$i = 0;
$class = "";
while($row = mysql_fetch_assoc($query)) {
if($i % 5 == 0){
$class = 'first';
}else if($i % 5 == 4){
$class = 'last';
}else{
$class = "";
}
echo '<div class="single ' . $class . '">';
echo '<img src="'.$row['image'].'" alt="'.$row['title'].' " />';
echo '</div>';
$i++;
}
?>