方法1:
直接取出想要取出的标记
复制代码 代码如下:
//取出br标记
function strip($str)
{
$str=str_replace("
","",$str);
//$str=htmlspecialchars($str);
return strip_tags($str);
}
?>
方法2.
PHP 中有个 strip_tags 函数可以方便地去除 HTML 标签。
echo strip_tags(“Hello World”); // 去除 HTML、XML 以及 PHP 的标签。
对于非标准的 HTML 代码也能正确的去除:
echo strip_tags(“\”>cftea”); //输出 cftea
在PHP中可以使用strip_tags函数去除HTML标签,看下面示例:
复制代码 代码如下:
$str = ‘www
dreamdu
.com';echo(htmlspecialchars($str).”
”);
echo(strip_tags($str));
?>
方法3.
strtr() 函数转换字符串中特定的字符。
语法
strtr(string,from,to)
或者
strtr(string,array)
参数 | 描述 |
---|---|
string1 | 必需。规定要转换的字符串。 |
from | 必需(除非使用数组)。规定要改变的字符。 |
to | 必需(除非使用数组)。规定要改变为的字符。 |
array | 必需(除非使用 from 和 to)。一个数组,其中的键是原始字符,值是目标字符。 |
例子1:
复制代码 代码如下:
echo strtr("Hilla Warld","ia","eo");
?>
例子2:
复制代码 代码如下:
$arr = array("Hello" => "Hi", "world" => "earth");
echo strtr("Hello world",$arr);
?>

To protect the application from session-related XSS attacks, the following measures are required: 1. Set the HttpOnly and Secure flags to protect the session cookies. 2. Export codes for all user inputs. 3. Implement content security policy (CSP) to limit script sources. Through these policies, session-related XSS attacks can be effectively protected and user data can be ensured.

Methods to optimize PHP session performance include: 1. Delay session start, 2. Use database to store sessions, 3. Compress session data, 4. Manage session life cycle, and 5. Implement session sharing. These strategies can significantly improve the efficiency of applications in high concurrency environments.

Thesession.gc_maxlifetimesettinginPHPdeterminesthelifespanofsessiondata,setinseconds.1)It'sconfiguredinphp.iniorviaini_set().2)Abalanceisneededtoavoidperformanceissuesandunexpectedlogouts.3)PHP'sgarbagecollectionisprobabilistic,influencedbygc_probabi

In PHP, you can use the session_name() function to configure the session name. The specific steps are as follows: 1. Use the session_name() function to set the session name, such as session_name("my_session"). 2. After setting the session name, call session_start() to start the session. Configuring session names can avoid session data conflicts between multiple applications and enhance security, but pay attention to the uniqueness, security, length and setting timing of session names.

The session ID should be regenerated regularly at login, before sensitive operations, and every 30 minutes. 1. Regenerate the session ID when logging in to prevent session fixed attacks. 2. Regenerate before sensitive operations to improve safety. 3. Regular regeneration reduces long-term utilization risks, but the user experience needs to be weighed.

Setting session cookie parameters in PHP can be achieved through the session_set_cookie_params() function. 1) Use this function to set parameters, such as expiration time, path, domain name, security flag, etc.; 2) Call session_start() to make the parameters take effect; 3) Dynamically adjust parameters according to needs, such as user login status; 4) Pay attention to setting secure and httponly flags to improve security.

The main purpose of using sessions in PHP is to maintain the status of the user between different pages. 1) The session is started through the session_start() function, creating a unique session ID and storing it in the user cookie. 2) Session data is saved on the server, allowing data to be passed between different requests, such as login status and shopping cart content.

How to share a session between subdomains? Implemented by setting session cookies for common domain names. 1. Set the domain of the session cookie to .example.com on the server side. 2. Choose the appropriate session storage method, such as memory, database or distributed cache. 3. Pass the session ID through cookies, and the server retrieves and updates the session data based on the ID.


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

Zend Studio 13.0.1
Powerful PHP integrated development environment

SublimeText3 Chinese version
Chinese version, very easy to use

MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool

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