PHP $_POST接受不到数据,但$_GET可以接受数据
新手一枚,代码如下,把post 改成 get 就没问题,但如果是post 就会提示
Notice: Undefined index: a in D:\xampp\htdocs\myphp\add.php on line 3
add.html
<code> <meta charset="UTF-8"> <title>Title</title> <form action="add.php" method="post"> a:<input type="text" name="a"> <br> b:<input type="text" name="b"><br> <input type="submit" value="提交"> </form> </code>
add.php
<code> <?php if($_POST['a'] && $_POST['b']){ echo $_POST['a'] + $_POST['b']; }else{ echo ' 请输入数字'; } ?></code>
回复内容:
新手一枚,代码如下,把post 改成 get 就没问题,但如果是post 就会提示
Notice: Undefined index: a in D:\xampp\htdocs\myphp\add.php on line 3
add.html
<code> <meta charset="UTF-8"> <title>Title</title> <form action="add.php" method="post"> a:<input type="text" name="a"> <br> b:<input type="text" name="b"><br> <input type="submit" value="提交"> </form> </code>
add.php
<code> <?php if($_POST['a'] && $_POST['b']){ echo $_POST['a'] + $_POST['b']; }else{ echo ' 请输入数字'; } ?></code>
我也是类似的问题,只有一种可能,就是你得phpstrom配置的端口与phpinfo()端口不符。先看一下phpinfo()?>的端口在哪里比如localhost,那么就配置phpstrom-》Tools-》Dployment-》Configuration-》
新建比如Name=localhost,然后设置Web sever root url为http://localhost,端口与phpinfo()端口一致即可
php.ini 中配置 enable_post_data_reading 为 On, 这样才会自动将 POST 数据填入 $_POST 数组中。
<code>; Whether PHP will read the POST data. ; This option is enabled by default. ; Most likely, you won't want to disable this option globally. It causes $_POST ; and $_FILES to always be empty; the only way you will be able to read the ; POST data will be through the php://input stream wrapper. This can be useful ; to proxy requests or to process the POST data in a memory efficient fashion. ; http://php.net/enable-post-data-reading ; enable_post_data_reading = Off</code>
判断是否输入a和b的值,应该使用:
<code>isset($_POST['a']) && isset($_POST['b']</code>
你的写法在a或b输入0值时,不会走相加分支。
打印 $_REQUEST
数组,
如果查验是否有数据POST过来,如果没有确定的条件下,推荐在业务处理前先进行打印数据。
上面可以直接var_dump($_POST);
看下是否有值。
post有好几种方式,你看你是什么方式提交的?
php配置问题吧

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

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 is a scripting language widely used on the server side, especially suitable for web development. 1.PHP can embed HTML, process HTTP requests and responses, and supports a variety of databases. 2.PHP is used to generate dynamic web content, process form data, access databases, etc., with strong community support and open source resources. 3. PHP is an interpreted language, and the execution process includes lexical analysis, grammatical analysis, compilation and execution. 4.PHP can be combined with MySQL for advanced applications such as user registration systems. 5. When debugging PHP, you can use functions such as error_reporting() and var_dump(). 6. Optimize PHP code to use caching mechanisms, optimize database queries and use built-in functions. 7

PHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.

PHP and Python each have their own advantages, and the choice should be based on project requirements. 1.PHP is suitable for web development, with simple syntax and high execution efficiency. 2. Python is suitable for data science and machine learning, with concise syntax and rich libraries.

PHP is widely used in e-commerce, content management systems and API development. 1) E-commerce: used for shopping cart function and payment processing. 2) Content management system: used for dynamic content generation and user management. 3) API development: used for RESTful API development and API security. Through performance optimization and best practices, the efficiency and maintainability of PHP applications are improved.

PHP is still dynamic and still occupies an important position in the field of modern programming. 1) PHP's simplicity and powerful community support make it widely used in web development; 2) Its flexibility and stability make it outstanding in handling web forms, database operations and file processing; 3) PHP is constantly evolving and optimizing, suitable for beginners and experienced developers.

PHP is suitable for web development, especially in rapid development and processing dynamic content, but is not good at data science and enterprise-level applications. Compared with Python, PHP has more advantages in web development, but is not as good as Python in the field of data science; compared with Java, PHP performs worse in enterprise-level applications, but is more flexible in web development; compared with JavaScript, PHP is more concise in back-end development, but is not as good as JavaScript in front-end development.

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP and Python have their own advantages and disadvantages, and the choice depends on project needs and personal preferences. 1.PHP is suitable for rapid development and maintenance of large-scale web applications. 2. Python dominates the field of data science and machine learning.
