关于特殊字符的过滤...我这有80分。。
我现遇到一个问题,在提交表单时,对提交的内容要过滤掉特殊字符如:~!@#$%^&*()_+ ..这些
如我有一提交内容:生活*&)可以)(_更美的
如何过滤成:生活可以更美的。
我的做法是:
$str=str_replace("&","",$str);
$str=str_replace(">","",$str);
$str=str_replace(" $str=str_replace("=","",$str);
$str=str_replace("(","",$str);
$str=str_replace(")","",$str);
$str=str_replace("[","",$str);
$str=str_replace("]","",$str);
$str=str_replace(".","",$str);
$str=str_replace("*","",$str);
$str=str_replace("#","",$str);
$str=str_replace("$","",$str);
$str=str_replace("@","",$str);
$str=str_replace("-","",$str);
$str=str_replace("+","",$str);
$str=str_replace("&","",$str);
$str=str_replace("!","",$str);
$str=str_replace("~","",$str);
$str=str_replace("^","",$str);
$str=str_replace("%","",$str);
$str=str_replace("'","",$str);
$str=str_replace("\"","",$str);
有没有更简便的方法。。求指教。。我这有80分。。
回复讨论(解决方案)
为何:$str=preg_replace("[`~!@#$%^&*()+=|{}':;',//[//]./?~!@#¥%……&*()??+|{}【】‘;:”“’。,、?]",'',$str);这样写,不行呢?
为何:$str=preg_replace("[`~!@#$%^&*()+=|{}':;',//[//]./?~!@#¥%……&*()??+|{}【】‘;:”“’。,、?]",'',$str);这样写,不行呢?
1.最大问题是正则没有边界符
2.转义不是//而是\,双引号内是\\
3.|被看作是或选择了
4.双引号内还有双引号么
……
大哥,那要怎么弄才行呀。
$p = str_split("&><=()[].*#$@-+&! ~ ^%'\"_");$s = '生活*&)可以)(_更美的';echo str_replace($p, '', $s);
明白了,多谢指点...只是不知全角的特符字符如¥)(,这些是否也能适用。。我试下
明白了,多谢指点...只是不知全角的特符字符如¥)(,这些是否也能适用。。我试下
全角的话改成用下面的函数
<?php function mb_str_split( $string, $encoding='UTF-8' ) { # Split at all position not after the start: ^ # and not before the end: $ mb_regex_encoding($encoding); mb_internal_encoding($encoding); return preg_split('/(?<!^)(?!$)/u', $string, ); } $string = '火车票'; $charlist = mb_str_split( $string ); // 如果是gbk的话使用// $charlist = mb_str_split( $string,'GBK' ); print_r( $charlist ); ?> # Prints: Array ( [0] => 火 [1] => 车 [2] => 票 )
对于切割串为数组,全角不适合
但手工书写的数组就是一样的了

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



Alipay PHP...

JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,

The application of SOLID principle in PHP development includes: 1. Single responsibility principle (SRP): Each class is responsible for only one function. 2. Open and close principle (OCP): Changes are achieved through extension rather than modification. 3. Lisch's Substitution Principle (LSP): Subclasses can replace base classes without affecting program accuracy. 4. Interface isolation principle (ISP): Use fine-grained interfaces to avoid dependencies and unused methods. 5. Dependency inversion principle (DIP): High and low-level modules rely on abstraction and are implemented through dependency injection.

How to automatically set the permissions of unixsocket after the system restarts. Every time the system restarts, we need to execute the following command to modify the permissions of unixsocket: sudo...

How to debug CLI mode in PHPStorm? When developing with PHPStorm, sometimes we need to debug PHP in command line interface (CLI) mode...

Article discusses late static binding (LSB) in PHP, introduced in PHP 5.3, allowing runtime resolution of static method calls for more flexible inheritance.Main issue: LSB vs. traditional polymorphism; LSB's practical applications and potential perfo

Sending JSON data using PHP's cURL library In PHP development, it is often necessary to interact with external APIs. One of the common ways is to use cURL library to send POST�...

Article discusses essential security features in frameworks to protect against vulnerabilities, including input validation, authentication, and regular updates.
