PHP没法对父目录文件操作
PHP无法对父目录文件操作
$t = file_exists('../index.php');
结果为false
但是
$t = file_exists('index.php');
就是true的,很明显没有父目录权限,刚安装的wamp,不知道父目录权限是修改apache配置文件还是php.ini,又是改哪个位置的0和1吗,求指点,百度搜了好像也没有符合的答案..可能我用错关键字了
------解决方案--------------------
../是上层目录
什么都不带是当前目录...
------解决方案--------------------
./ 才表示当前目录。
而且windows下很少因为权限出问题
------解决方案--------------------
file_exist是文件是否存在。。存在返回true 不存在返回false 你看上层目录下有那个文件么。。
windows下修改权限右击属性中安全选项卡里
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
1359
52
Explain late static binding in PHP (static::).
Apr 03, 2025 am 12:04 AM
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.
Explain JSON Web Tokens (JWT) and their use case in PHP APIs.
Apr 05, 2025 am 12:04 AM
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,
What are PHP magic methods (__construct, __destruct, __call, __get, __set, etc.) and provide use cases?
Apr 03, 2025 am 12:03 AM
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.
How to monitor system performance through Debian logs
Apr 02, 2025 am 08:00 AM
Mastering Debian system log monitoring is the key to efficient operation and maintenance. It can help you understand the system's operating conditions in a timely manner, quickly locate faults, and optimize system performance. This article will introduce several commonly used monitoring methods and tools. Monitoring system resources with the sysstat toolkit The sysstat toolkit provides a series of powerful command line tools for collecting, analyzing and reporting various system resource metrics, including CPU load, memory usage, disk I/O, network throughput, etc. The main tools include: sar: a comprehensive system resource statistics tool, covering CPU, memory, disk, network, etc. iostat: disk and CPU statistics. mpstat: Statistics of multi-core CPUs. pidsta
Why can't my code get the data returned by the API? How to solve this problem?
Apr 01, 2025 pm 08:09 PM
Why can't my code get the data returned by the API? In programming, we often encounter the problem of returning null values when API calls, which is not only confusing...
Four ways to implement multithreading in C language
Apr 03, 2025 pm 03:00 PM
Multithreading in the language can greatly improve program efficiency. There are four main ways to implement multithreading in C language: Create independent processes: Create multiple independently running processes, each process has its own memory space. Pseudo-multithreading: Create multiple execution streams in a process that share the same memory space and execute alternately. Multi-threaded library: Use multi-threaded libraries such as pthreads to create and manage threads, providing rich thread operation functions. Coroutine: A lightweight multi-threaded implementation that divides tasks into small subtasks and executes them in turn.
How to efficiently read Windows system logs and get only information from the last few days?
Apr 01, 2025 pm 11:21 PM
Efficient reading of Windows system logs: Reversely traverse Evtx files When using Python to process Windows system log files (.evtx), direct reading will be from the earliest...
Where to download Python .whl files under Windows?
Apr 01, 2025 pm 08:18 PM
Python binary library (.whl) download method explores the difficulties many Python developers encounter when installing certain libraries on Windows systems. A common solution...
