好的,所以我正在一个PHP网站上工作,我在图像下有产品的描述,我需要做的是限制页面上的字符数并添加单击此处或..以便将查看者定向到该产品页面以查看完整说明。仅供参考,我对PHP非常陌生,这是我到目前为止所拥有的。所以问题是我是否使用 PHP 或 JavaScript 或两者兼而有之,我该怎么做?
<?php
// Include need php scripts
require_once ("Includes/simplecms-config.php");
require_once ("Includes/connectDB.php");
include ("Includes/header.php");
if (!empty($_GET['cat'])) {
$category = $_GET['cat'];
$query = mysqli_query($db, "SELECT * FROM products WHERE category = '".$category."'");
} else {
$query = mysqli_query($db, "SELECT * FROM products");
}
if (!$query) {
die('Database query failed: ' . $query->error);
}
?>
<section>
<div id="productList">
<?php
$row_count = mysqli_num_rows($query);
if ($row_count == 0) {
echo '<p style="color:red">There are no images uploaded for this category</p>';
} elseif ($query) {
while($products = mysqli_fetch_array($query)){
$file = $products['image'];
$product_name = $products['product'];
$image_id = $products['id'];
$price = $products['price'];
$desc = $products['description'];
echo '<div class="image_container">';
echo '<a href="viewProduct.php?id=' . $image_id . '"><p><img src="Images/products/'.$file.'" alt="'.$product_name.'" height="250" /></p>';
echo $product_name . "</a><br>$" . $price . "<br>" . $desc;
echo '</div>';
if (is_admin()){
echo "<a href='deleteproduct.php'><button>delete</button></a>";
}
}
} else {
die('There was a problem with the query: ' .$query->error);
}
mysqli_free_result($query);
?>
</div>
</section>
<?php include ("Includes/footer.php"); ?>
使用 strlen 和 substr 我们可以实现这一点
$length = 150
$x = 'string';
if(strlen($x)<=$length)
{
echo $x;
}
else
{
$y=substr($x,0,$length) . '...';
echo $y;
}