PHP+Mysql+jQuery实现动态展示信息_PHP
jQuery
在本站前面有文章介绍了如何实现发表微博说说:PHP+Mysql+jQuery实现发布微博程序--jQuery篇,本例将基于其数据库结构,用动态的方式展示发表的说说信息。查看示例:DEMO
XHTML复制代码 代码如下:
上述HTML结构由N个.saylist构成,用于展示用户的评论信息,当然在本例中,将由PHP负责生成这段XHTML代码。
CSS
复制代码 代码如下:
#demo{width:400px; height:80px; margin:80px auto; border-bottom:1px dotted #d3d3d3}
.saylist{margin:8px auto; height:80px; padding:4px 0;}
.saylist img{float:left; width:50px; margin:4px}
.saytxt{float:right; width:320px; overflow:hidden}
.saytxt p{line-height:18px}
.saytxt p strong{margin-right:6px}
.saytxt p span{color:#999}
.say{margin-top:3px; font-size:14px; font-weight:bold}
使用上述CSS渲染HTML外观,当然你也可以自己定制你喜欢的外观样式。
PHP
在function.php中有两个函数,formatSay()用来输出用户评论列表,即输出上文中的HTML。
复制代码 代码如下:
function formatSay($say,$dt,$uid){
$say=htmlspecialchars(stripslashes($say));
return'
';
}
时间轴函数tranTime()将时间转换成如“1小时前”的格式,详情可阅读本站文章:PHP实现时间轴函数
复制代码 代码如下:
function tranTime($stime) {
$rtime = date("m-d H:i",$stime);
$htime = date("H:i",$stime);
$day_time = date("j",$stime);
$today=date("j",time());
$ds = $today - $day_time;
$time = time() - $stime;
if ($time $str = '刚刚';
}
elseif ($time $min = floor($time/60);
$str = $min.'分钟前';
}
elseif ($time $h = floor($time/(60*60));
$str = $h.'小时前 '.$htime;
if($ds==1)
$str = '昨天 '.$rtime;
}
elseif ($time $str = '昨天 '.$rtime;
if($ds==2)
$str = '前天 '.$rtime;
}elseif($time $str = '前天 '.$rtime;
if($ds>2)
$str = $rtime;
}
else {
$str = $rtime;
}
return $str;
}
然后在index.php中调用funciton.php,并连接MySQL数据库输出评论列表。
复制代码 代码如下:
require_once('connect.php'); //连接数据库文件
require_once('function.php'); //函数文件
$query=mysql_query("select * from say order by id desc limit 0,15");
while ($row=mysql_fetch_array($query)) {
$sayList.=formatSay($row[content],$row[addtime],$row[userid]);
}
在div#demo中输出评论列表。
复制代码 代码如下:
这样一来,运行index.php会出现一个列表,我们只需要一条一条展示,下面就需要jQuery来办了。
jQuery
复制代码 代码如下:
$(function(){
//除了显示第一个saylist,其他的都隐藏
$(".saylist").hide().eq(0).show();
//自循环函数,循环展示信息
(function showNextSay(){
//每条信息展示7.5秒
$(".saylist:visible").delay(7500).fadeOut("slow",function(){
$(this).appendTo("#demo");
//展示下一条
$(".saylist:first").fadeIn("slow",function(){
//再次调用函数
showNextSay();
});
});
})();
});

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics











PHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.

PHP is widely used in e-commerce, content management systems and API development. 1) E-commerce: used for shopping cart function and payment processing. 2) Content management system: used for dynamic content generation and user management. 3) API development: used for RESTful API development and API security. Through performance optimization and best practices, the efficiency and maintainability of PHP applications are improved.

In PHP, password_hash and password_verify functions should be used to implement secure password hashing, and MD5 or SHA1 should not be used. 1) password_hash generates a hash containing salt values to enhance security. 2) Password_verify verify password and ensure security by comparing hash values. 3) MD5 and SHA1 are vulnerable and lack salt values, and are not suitable for modern password security.

PHP is a scripting language widely used on the server side, especially suitable for web development. 1.PHP can embed HTML, process HTTP requests and responses, and supports a variety of databases. 2.PHP is used to generate dynamic web content, process form data, access databases, etc., with strong community support and open source resources. 3. PHP is an interpreted language, and the execution process includes lexical analysis, grammatical analysis, compilation and execution. 4.PHP can be combined with MySQL for advanced applications such as user registration systems. 5. When debugging PHP, you can use functions such as error_reporting() and var_dump(). 6. Optimize PHP code to use caching mechanisms, optimize database queries and use built-in functions. 7

PHP handles file uploads through the $\_FILES variable. The methods to ensure security include: 1. Check upload errors, 2. Verify file type and size, 3. Prevent file overwriting, 4. Move files to a permanent storage location.

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.

PHP is still dynamic and still occupies an important position in the field of modern programming. 1) PHP's simplicity and powerful community support make it widely used in web development; 2) Its flexibility and stability make it outstanding in handling web forms, database operations and file processing; 3) PHP is constantly evolving and optimizing, suitable for beginners and experienced developers.

PHP and Python each have their own advantages, and the choice should be based on project requirements. 1.PHP is suitable for web development, with simple syntax and high execution efficiency. 2. Python is suitable for data science and machine learning, with concise syntax and rich libraries.
