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



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,

In PHP8, match expressions are a new control structure that returns different results based on the value of the expression. 1) It is similar to a switch statement, but returns a value instead of an execution statement block. 2) The match expression is strictly compared (===), which improves security. 3) It avoids possible break omissions in switch statements and enhances the simplicity and readability of the code.

In PHP, you can effectively prevent CSRF attacks by using unpredictable tokens. Specific methods include: 1. Generate and embed CSRF tokens in the form; 2. Verify the validity of the token when processing the request.

In PHP, the final keyword is used to prevent classes from being inherited and methods being overwritten. 1) When marking the class as final, the class cannot be inherited. 2) When marking the method as final, the method cannot be rewritten by the subclass. Using final keywords ensures the stability and security of your code.

Solving the problem of slow Photoshop startup requires a multi-pronged approach, including: upgrading hardware (memory, solid-state drive, CPU); uninstalling outdated or incompatible plug-ins; cleaning up system garbage and excessive background programs regularly; closing irrelevant programs with caution; avoiding opening a large number of files during startup.

How to implement Windows-like in front-end development...

How to distinguish between closing tabs and closing entire browser using JavaScript on your browser? During the daily use of the browser, users may...

The... (splat) operator in PHP is used to unpack function parameters and arrays, improving code simplicity and efficiency. 1) Function parameter unpacking: Pass the array element as a parameter to the function. 2) Array unpacking: Unpack an array into another array or as a function parameter.
