Course 19220
Course Introduction:PHP array functions allow you to access and manipulate arrays, supporting single-dimensional and multi-dimensional arrays. Array functions are a core part of PHP. No installation is required to use these functions. "PHP Function: Array Array Function Video Explanation" explains the syntax, parameters, return values, etc. of PHP array functions, and provides examples of functions through the PHP editor to help PHP learners better understand and use array functions.
Course 13195
Course Introduction:PHP string functions belong to the core part of PHP. No installation is required to use these functions. "PHP Function String String Function Video Explanation" explains the syntax, parameters, return values, etc. of PHP string functions, and runs examples of various string functions in the browser through the PHP editor to help PHP learners learn more Good to learn and use string functions.
Course 15144
Course Introduction:There has been a rumor in the world that "PHP is the best language in the world". Is it true or false? Don't you want to find out? This set of courses starts from the most basic PHP syntax, from the shallower to the deeper, giving you a different learning experience.
Course 8011
Course Introduction:Introduction: PHP provides powerful system functions to help us complete functions, but sometimes it is not enough to just use system functions. Custom functions need to be encapsulated according to the business, as explained in "PHP Advanced - Function Video Tutorial" It explains how to customize functions and common problems in custom functions. It is a must-read course for getting started with PHP.
Course 9050
Course Introduction:A function is a block of code that implements a specific function. The direct purpose of defining a function is to divide the program into blocks according to functions, so as to facilitate the use, management, reading and debugging of the program. Functions can be roughly divided into system functions and custom functions. When the functions provided to us in the system cannot achieve a specific function you want to achieve, you need to define a function yourself. This is called a custom function. , of course there are some special forms of functions in PHP, such as recursive functions, callback functions, etc.
如何在 PHP 中使用 while 循环按 ID 列出节中的数据?
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2023-11-16 19:00:36 0 1 277
如何根据角色为每个用户定义一组权限的Laravel Spatie权限设置方法?
2023-11-14 12:58:58 0 1 292
php //给定一个年月日,输出该日期是当年的第几天(注意闰年4 100 400)
2023-11-14 23:55:21 0 1 79
Course Introduction:Excel 连乘函数 PRODUCT 可用于计算一系列数字的乘积。语法为 =PRODUCT(number1, number2, ..., numbern),最多可指定 255 个数字或单元格引用。它可以忽略错误值并与数组常量配合使用。
2024-07-05 comment 947
Course Introduction:PHP框架最常用的扩展有:Aura.Sql(ORM数据库交互)、Guzzle(HTTP客户端)、LaravelSpark(计费和团队管理)、Sentry(错误跟踪),工具有:Composer(包管理器)在Laravel应用程序中,我们可以使用Aura.Sql来连接数据库并执行查询,从而简化代码编写。
2024-07-05 comment 869
Course Introduction:为了编写自定义中间件函数,需要使用express.Router()创建路由器。然后,使用use()方法附加中间件函数,该函数接受req(请求对象)、res(响应对象)和next(下一个中间件或路由处理程序)。例如,可创建一个验证请求中令牌的中间件函数:在中间件函数中检查请求头中是否存在有效的令牌,如果令牌无效,返回401未授权错误。通过将此中间件添加到路由器,可以在请求到达路由处理程序之前验证令牌。
2024-07-04 comment 884
Course Introduction:if 函数嵌套允许在 if 函数中使用另一个 if 函数,以根据多个条件执行不同的操作。嵌套 if 函数的语法为:IF(logical_test1, value_if_true1, IF(logical_test2, value_if_true2, value_if_false2)),其中例如,如果单元格 A1 中的数字小于 0,则公式 =IF(A1<0,"负数",IF(A
2024-07-03 comment 200
Course Introduction:IF 函数可以处理多个条件,通过嵌套或使用 AND/OR 函数组合条件。嵌套 IF 函数可通过逐层判断不同条件来返回指定值。AND 函数要求所有条件均为真才返回指定值,而 OR 函数只要任意一个条件为真即可返回指定值。
2024-07-03 comment 350