【发布时间】：2016-04-11 18:32:53
【问题描述】：
我制作了一个网页，我上传（到数据库）并同时以最新上传的方式显示，就像任何社交网络一样。
我添加了一个“添加过滤器”按钮，单击它会打开一个新页面，我需要在其中显示与相应按钮和具有不同过滤器值的单选按钮关联的图像。我能够正确显示图像和按钮，但单击过滤器按钮时效果不适用。
首先，我在基本 HTML 上测试了按钮，一切都运行良好。但是当我在php中尝试时，效果没有得到应用。我知道原因，即我无法为 div id #myImg 编写正确的语法，在 HTML 中我们将其写为
<img id="myImg" src="cool1.jpg" />
但在 php 中我可以提供 id（我的意思是位置等属性已正确应用）但效果没有得到应用
这是我的代码
<html>
<head><title>Play </title>
<head>
<meta name="viewport" content="width=device-width">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
<title>Img Filtr</title>
<link rel="stylesheet" type="text/css" href="/trystyle.css" />
<script type="text/javascript">
function click_position(obj)
{
change_position(obj.value)
}
function change_position(val)
{
var s="demoDIV";
s="myImg ";
s=s.trim();
document.getElementById(s).style.filter=val;
document.getElementById(s).style.WebkitFilter=val;
var x="filter:<span id='enlargecssprop'>" + val + "</span>";
var y="img#myImg {<br> ###CSSPROP###;<br>}<br>";
var z=y.replace("###CSSPROP###",x);
}
</script>
<style>
.playit {
background-color:#ffffff;
margin-top:1%;
margin-left:55%;
float:left;
font-family:Consolas,'Courier New', Courier, monospace;
}
img#myImg {
filter:none;
width:50%;
height:70%;
line-height:200%;
margin-bottom:15%;
position: absolute;
margin: 15px;
left:0;
}
</style></head>
<body>
<?php
$servername = "localhost";
$username = "root";
$password = "";
$dbname = "databaseimage";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
if(isset($_POST["filter"]))
{
$image = $_POST['imageID'];
$sql = mysqli_query($conn,"SELECT url FROM images where image_id='$image'");
$image = mysqli_fetch_assoc($sql);
$image1= '<img src="data:image/jpeg;base64,'.base64_encode( $image['url'] ).'" width="500" height="500" >';
echo $image1;//how to add the myimg id to give effects
echo " <form class='playit' action='javascript:return false;'>
Filter:<br><br>
<input type='hidden' id='preselectedValue' value='none' />
<div class='radio'><input autocomplete='off' type='radio' name='radio_position' onclick=click_position(this) id='value_1' value='none'/><label for='value_1'>none</label></div>
<div class='radio'><input autocomplete='off' type='radio' name='radio_position' onclick=click_position(this) id='value_2' value='none'/><label for='value_2'>blur(5px)</label></div>
<div class='radio'><input autocomplete='off' type='radio' name='radio_position' onclick=click_position(this) id='value_3' value='none'/><label for='value_3'>contrast(200%)</label></div>
<div class='radio'><input autocomplete='off' type='radio' name='radio_position' onclick=click_position(this) id='value_4' value='none'/><label for='value_1'><label for='value_4'>drop-shadow(8px 8px 10px red)</label></div>
<div class='radio'><input autocomplete='off' type='radio' name='radio_position' onclick=click_position(this) id='value_5' value='none'/><label for='value_5'>grayscale(100%)</label></div>
<div class='radio'><input autocomplete='off' type='radio' name='radio_position' onclick=click_position(this) id='value_6' value='none'/><label for='value_1'><label for='value_6'>hue-rotate(90deg)</label></div>
<div class='radio'><input autocomplete='off' type='radio' name='radio_position' onclick=click_position(this) id='value_7' value='none'/><label for='value_1'><label for='value_7'>invert(100%)</label></div>
<div class='radio'><input autocomplete='off' type='radio' name='radio_position' onclick=click_position(this) id='value_8' value='none'/><label for='value_1'><label for='value_8'>opacity(30%)</label></div>
<div class='radio'><input autocomplete='off' type='radio' name='radio_position' onclick=click_position(this) id='value_9' value='none'/><label for='value_1'><label for='value_9'>saturate(8)</label></div>
<div class='radio'><input autocomplete='off' type='radio' name='radio_position' onclick=click_position(this) id='value_10' value='none'/><label for='value_1'><label for='value_10'>sepia(100%)</label></div>
<div class='radio'><input autocomplete='off' type='radio' name='radio_position' onclick=click_position(this) id='value_11' value='none'/><label for='value_1'><label for='value_11'>contrast(200%) brightness(150%)</label></div>
<div class='radio'><input autocomplete='off' type='radio' name='radio_position' onclick=click_position(this) id='value_12' value='none'/><label for='value_1'><label for='value_12'>brightness(200%)</label></div>
</form>";
}
?>
</body>
</html>
我想我只需要正确的语法。
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标签： php html css imagefilter