PHP跳转函数和一个通用的操作提示类的编写
PHP 跳转，即重定向浏览器到指定的 URL，是一个很常见的功能。这种功能也有一些细节性的要求，比如等待多少秒以后跳转，用不用JavaScript实现跳转，等等。下面的跳转方法考虑到很多，并参数化，可以用到具体的项目当中。
<?php
/**
* 重定向浏览器到指定的 URL
*
* @param string $url 要重定向的 url
* @param int $delay 等待多少秒以后跳转
* @param bool $js 指示是否返回用于跳转的 JavaScript 代码
* @param bool $jsWrapped 指示返回 JavaScript 代码时是否使用 <mce:script type="text/javascript"><!--
标签进行包装
* @param bool $return 指示是否返回生成的 JavaScript 代码
*/
function redirect($url, $delay = 0, $js = false, $jsWrapped = true, $return = false)
{
$delay = (int)$delay;
if (!$js) {
if (headers_sent() || $delay > 0) {
echo <<<EOT
<html>
<head>
<meta http-equiv="refresh" content="{$delay};URL={$url}" />
</head>
</html>
EOT;
exit;
} else {
header("Location: {$url}");
exit;
}
}
$out = '';
if ($jsWrapped) {
$out .= '<script language="JavaScript" type="text/javascript">';
}
$url = rawurlencode($url);
if ($delay > 0) {
$out .= "window.setTimeOut(function () { document.location='{$url}'; }, {$delay});";
} else {
$out .= "document.location='{$url}';";
}
if ($jsWrapped) {
$out .= '
// --></mce:script>';
}
if ($return) {
return $out;
}
echo $out;
exit;
}
?>
一个通用的操作提示类的编写
在设计一些系统的时候，经常需要给用户进行操作提示。这种提示很重要，友好的提示能够提升用户对系统的好感度。操作提示有很多设计，下面是我的一个简陋的方案，仅抛砖引玉。
<?php
class Tips{
private $tips;
static private $_instance;
private function __construct($string, $url)
{
$this->tips = "
<meta http-equiv=refresh content=4;url=$url>
<p style='border:1px solid #B4D8F4; width:320px; height:120px; margin:0 auto; font-size:12px;'>
<p style='background-color:#CDE6F9; height:20px;'></p>
<p align='center' style='font-size:14px; font-weight:bold; margin:20px 0 20px 0;'>$string</p>
<p align='center'>返回 （4秒后自动返回）</p>
</p>
";
return $this->tips;
}
public function __toString(){
return $this->tips;
}
private function __clone(){}
public static function get_tips($string, $url)
{
if( FALSE == (self::$_instance instanceof self) )
{
self::$_instance = new self($string, $url);
}
return self::$_instance;
}
}
?>这个类功能很简单，就是实现了4秒后跳转到某个链接，或者点击跳到那个链接。
__toString()这个函数很重要，它可以实现类对象的字符串输出。
如何使用这个类呢？
include_once("./tips_class.php");
$hit = "错误：两次输入的密码不一致";
$jump = "../login.php";
echo $tips = Tips::get_tips($hit, $jump);
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
AI Hentai Generator
Generate AI Hentai for free.
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
Tips for dynamically creating new functions in golang functions
Apr 25, 2024 pm 02:39 PM
Go language provides two dynamic function creation technologies: closure and reflection. closures allow access to variables within the closure scope, and reflection can create new functions using the FuncOf function. These technologies are useful in customizing HTTP routers, implementing highly customizable systems, and building pluggable components.
Considerations for parameter order in C++ function naming
Apr 24, 2024 pm 04:21 PM
In C++ function naming, it is crucial to consider parameter order to improve readability, reduce errors, and facilitate refactoring. Common parameter order conventions include: action-object, object-action, semantic meaning, and standard library compliance. The optimal order depends on the purpose of the function, parameter types, potential confusion, and language conventions.
How to write efficient and maintainable functions in Java?
Apr 24, 2024 am 11:33 AM
The key to writing efficient and maintainable Java functions is: keep it simple. Use meaningful naming. Handle special situations. Use appropriate visibility.
Comparison of the advantages and disadvantages of C++ function default parameters and variable parameters
Apr 21, 2024 am 10:21 AM
The advantages of default parameters in C++ functions include simplifying calls, enhancing readability, and avoiding errors. The disadvantages are limited flexibility and naming restrictions. Advantages of variadic parameters include unlimited flexibility and dynamic binding. Disadvantages include greater complexity, implicit type conversions, and difficulty in debugging.
Complete collection of excel function formulas
May 07, 2024 pm 12:04 PM
1. The SUM function is used to sum the numbers in a column or a group of cells, for example: =SUM(A1:J10). 2. The AVERAGE function is used to calculate the average of the numbers in a column or a group of cells, for example: =AVERAGE(A1:A10). 3. COUNT function, used to count the number of numbers or text in a column or a group of cells, for example: =COUNT(A1:A10) 4. IF function, used to make logical judgments based on specified conditions and return the corresponding result.
What are the benefits of C++ functions returning reference types?
Apr 20, 2024 pm 09:12 PM
The benefits of functions returning reference types in C++ include: Performance improvements: Passing by reference avoids object copying, thus saving memory and time. Direct modification: The caller can directly modify the returned reference object without reassigning it. Code simplicity: Passing by reference simplifies the code and requires no additional assignment operations.
What is the difference between custom PHP functions and predefined functions?
Apr 22, 2024 pm 02:21 PM
The difference between custom PHP functions and predefined functions is: Scope: Custom functions are limited to the scope of their definition, while predefined functions are accessible throughout the script. How to define: Custom functions are defined using the function keyword, while predefined functions are defined by the PHP kernel. Parameter passing: Custom functions receive parameters, while predefined functions may not require parameters. Extensibility: Custom functions can be created as needed, while predefined functions are built-in and cannot be modified.
Advanced usage of reference parameters and pointer parameters in C++ functions
Apr 21, 2024 am 09:39 AM
Reference parameters in C++ functions (essentially variable aliases, modifying the reference modifies the original variable) and pointer parameters (storing the memory address of the original variable, modifying the variable by dereferencing the pointer) have different usages when passing and modifying variables. Reference parameters are often used to modify original variables (especially large structures) to avoid copy overhead when passed to constructors or assignment operators. Pointer parameters are used to flexibly point to memory locations, implement dynamic data structures, or pass null pointers to represent optional parameters.
