PHP出现Notice: unserialize() [function.unserialize]: Error a
今天的用PHP的时候无意的出现了用unserialize()函数转换老是返回false,我确认我的字符串是没错的,测试了很多次还是一样,没办法,启用了error_reporting(E_ALL)启用错误信息,没想到发现了Notice: unserialize() [function.unserialize]: Error at offset的信息
今天的用PHP的时候无意的出现了用unserialize()函数转换老是返回false,我确认我的字符串是没错的,测试了很多次还是一样,没办法,启用了error_reporting(E_ALL)启用错误信息,没想到发现了Notice: unserialize() [function.unserialize]: Error at offset的信息, 因为我字符我是从数组转换过来的,所以应该是没有错的, Google了一下,原来是编码问题,在PHP手册的评论中有人讨论了此问题.
原来我serialize后的数组字符串是从数据库里取出来的,而原来插入数据库时,因为美工修改前台视图代码时导致视图编码未保存成UTF8编码而是ANSCII编辑,而我复制出来后用unserialize()的PHP文件是UTF-8编码,编码不同,所以就出现错误了...
例子:
“ 首页以ANSCII方式操作
$arr = array('en' => 'hello', 'cn' => '您好');
$str = serialize($arr);
echo $str;
?>
输出结果: a:2:{s:2:"en";s:5:"hello";s:2:"cn";s:4:"您好";}
然后以UTF-8的编码方式来测试
则以上代码的输出结果为: a:2:{s:2:"en";s:5:"hello";s:2:"cn";s:6:"您好";}
看到有什么不同了吧,在出现中文字符时字符长度就不一样了,也就是strlen('您好')在第一种编码中是4,而在第二种编码中是6,其中原因可以查看相关手册. 而unsrialize()要根据类似 s:6:"您好" 中的6来判断字符长度并进行反序列,但原来的是4,字符长度不符,也就是出现了offset错误
解决办法:
“ 将要反序列的字符串进行一次转换,代码
$data=preg_replace('!s:(\d+):"(.*?)";!se',"'s:'.strlen('$2').':\"$2\";'",$data);
$data=unserialize($data);
如果您的解码数组内容里有类似(的双引号转移字符)的子元素,还需要对特定子元素去除重复的转移双引号(文本编辑器上传图片功能默认对URL内容进行了斜杠转义,解码后需要对其去除重复双引号转移)
a:7{s:8:"nickname";s:10:"4211931411";s:3:"uid";s:6:"481010";s:10:"other_type";s:1:"1";s:8:"other_id";i:2023;s:11:"other_title";s:143:"发布了博文:
中国有个你大爷 巧妙 答记者问 ";s:3:"des";s:232:" 1、记者:大爷,巿长被绑架了,绑匪要赎金一千万,如果不给,他们就用汽油烧死他。现正在";s:11:"content_url";s:53:"/blog/a-log/uid-481010/id-2023";}
$data['des']=stripslashes($data['des']);

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



PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

This tutorial demonstrates how to efficiently process XML documents using PHP. XML (eXtensible Markup Language) is a versatile text-based markup language designed for both human readability and machine parsing. It's commonly used for data storage an

If you are an experienced PHP developer, you might have the feeling that you’ve been there and done that already.You have developed a significant number of applications, debugged millions of lines of code, and tweaked a bunch of scripts to achieve op

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,

A string is a sequence of characters, including letters, numbers, and symbols. This tutorial will learn how to calculate the number of vowels in a given string in PHP using different methods. The vowels in English are a, e, i, o, u, and they can be uppercase or lowercase. What is a vowel? Vowels are alphabetic characters that represent a specific pronunciation. There are five vowels in English, including uppercase and lowercase: a, e, i, o, u Example 1 Input: String = "Tutorialspoint" Output: 6 explain The vowels in the string "Tutorialspoint" are u, o, i, a, o, i. There are 6 yuan in total

Static binding (static::) implements late static binding (LSB) in PHP, allowing calling classes to be referenced in static contexts rather than defining classes. 1) The parsing process is performed at runtime, 2) Look up the call class in the inheritance relationship, 3) It may bring performance overhead.

What are the magic methods of PHP? PHP's magic methods include: 1.\_\_construct, used to initialize objects; 2.\_\_destruct, used to clean up resources; 3.\_\_call, handle non-existent method calls; 4.\_\_get, implement dynamic attribute access; 5.\_\_set, implement dynamic attribute settings. These methods are automatically called in certain situations, improving code flexibility and efficiency.
