thinkphp's I() method is called on other php
The content of this article is about thinkphp's I() method being called on other PHP. It has a certain reference value. Now I share it with you. Friends in need can refer to it.
/** * 获取输入参数 支持过滤和默认值 * 使用方法: * <code> * I('id',0); 获取id参数 自动判断get或者post * I('post.name','','htmlspecialchars'); 获取$_POST['name'] * I('get.'); 获取$_GET * </code> * @param string $name 变量的名称 支持指定类型 * @param mixed $default 不存在的时候默认值 * @param mixed $filter 参数过滤方法 * @return mixed */ function I($name,$default='',$filter=null) { if(strpos($name,'.')) { // 指定参数来源 //判断参数$name中是否包括.号 list($method,$name) = explode('.',$name,2); //如果包括.号将.号前后分隔,并且分别赋值给$method以及$name }else{ // 默认为自动判断 //如果没有.号 $method = 'param'; } switch(strtolower($method)) {//将$method转换为小写 //如果$method为get,则$input为$_GET case 'get' : $input =& $_GET;break; //如果$method为get,则$input为$_POST case 'post' : $input =& $_POST;break; //如果为put,则将post的原始数据转参数给$input case 'put' : parse_str(file_get_contents('php://input'), $input);break; //如果是param case 'param' : //判断$_SERVER['REQUEST_METHOD'] switch($_SERVER['REQUEST_METHOD']) { //如果为post,则$input的内容为$_POST的内容 case 'POST': $input = $_POST; break; //如果为PUT.则input的内容为PUT的内容 case 'PUT': parse_str(file_get_contents('php://input'), $input); break; //默认为$_GET的内容 default: $input = $_GET; } break; //如果$method为request,则$input为$_REQUEST case 'request' : $input =& $_REQUEST; break; //如果$method为session,则$input为$_SESSION case 'session' : $input =& $_SESSION; break; //如果$method为cookie,则$input为$_COOKIE case 'cookie' : $input =& $_COOKIE; break; //如果$method为server,则$input为$_SERVER case 'server' : $input =& $_SERVER; break; //如果$method为globals,则$input为$GLOBALS case 'globals' : $input =& $GLOBALS; break; //默认返回空 default: return NULL; } /** * 到此为止,已经根据传入的参数的需要(第一个参数.号前面的),把所有的变量都取到了。下面就是返回变量的内容了。 **/ //如果$name为空,也就是I()第一个参数的.号后面为空的时候 if(empty($name)) { // 获取全部变量 //获取到的变量$input全部复制给$data $data = $input; //array_walk_recursive — 对数组中的每个成员递归地应用用户函数 //将$data的键值作为filter_exp函数的第一个参数,键名作为第二个参数 //如果$data的键值中含有or或者exp这两个字符,自动在后面加一个空格 array_walk_recursive($data,'filter_exp'); //判断过滤参数是否有,如果有的话,就直接使用过滤方法,如果没有的话,就使用配置中的过滤方法 $filters = isset($filter)?$filter:C('DEFAULT_FILTER'); if($filters) { $filters = explode(',',$filters); //将过滤参数中的每个方法都应用到$data中 foreach($filters as $filter){ //将$data的每个值使用$filters过滤 $data = array_map_recursive($filter,$data); // 参数过滤 } } }elseif(isset($input[$name])) { // 取值操作 $data = $input[$name]; is_array($data) && array_walk_recursive($data,'filter_exp'); //$filters = isset($filter)?$filter:C('DEFAULT_FILTER');'htmlspecialchars' $filters = isset($filter)?$filter:'htmlspecialchars'; if($filters) { $filters = explode(',',$filters); foreach($filters as $filter){ if(function_exists($filter)) { $data = is_array($data)?array_map_recursive($filter,$data):$filter($data); // 参数过滤 }else{ $data = filter_var($data,is_int($filter)?$filter:filter_id($filter)); if(false === $data) { return isset($default)?$default:NULL; } } } } }else{ // 变量默认值 $data = isset($default)?$default:NULL; } return $data; }
Related recommendations :
Some basic usage methods of ThinkPHP
Detailed explanation of ThinkPHP’s behavioral extensions and plug-ins
The above is the detailed content of thinkphp's I() method is called on other php. For more information, please follow other related articles on the PHP Chinese website!

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











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,

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.

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 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 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 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.

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.
