[英]Images in loop with different div class in PHP
假設我有像下面這樣的代碼
<?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>';
}
?>
我想在每組5張圖片的div類<div class="single">
中附加first
和last
<div class="single first">
<img src="image1.jpg" alt="title1" />
</div>
<div class="single">
<img src="image2.jpg" alt="title2" />
</div>
<div class="single">
<img src="image3.jpg" alt="title3" />
</div>
<div class="single">
<img src="image4.jpg" alt="title4" />
</div>
<div class="single last">
<img src="image5.jpg" alt="title5" />
</div>
如何通過循環做到這一點,請幫忙,
謝謝 :)
使用模 :
<?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++;
}
?>
<?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>';
}
?>
這個怎么樣:
$index = 0;
while($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++;
}
作為旁注,您是否考慮過改用CSS nth-child
屬性?
您需要計算迭代次數,並使用取模函數得到5的一部分:
$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++;
}
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