Course 2454
Course Introduction:This set of courses is based on the design concept and data structure of MySQL index, index usage scenarios, index classification, index usage scenarios, index performance analysis, query optimization, slow query of MySQL index, etc. It mainly describes the solution of MySQL index optimization. It is very suitable for students who have basic knowledge of MySQL or have certain work experience. The course explains how to solve the problem of slow large-volume queries, how to write an efficient SQL, how to optimize query statements, what is the implementation principle of indexes, how to optimize indexes... and many other difficulties and interview points in SQL index optimization.
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 22957
Course Introduction:Functions of smarty template engine
Course 8149
Course Introduction:In any programming language, arrays are a very important data organization type. Especially in PHP, the functions of arrays are more powerful. PHP has a large number of preset array functions, which greatly facilitates the development work of PHP programmers. . This course selects different types of very representative array functions to show everyone the charm of arrays in PHP~~
Course 3005
Course Introduction:The data visualization project uses the most popular chart engine ECharts to display all aspects of data that need to be presented in the e-commerce platform. Used to analyze the operation of e-commerce platforms in more detail in order to make correct decisions. The front-end of this project uses the Vue technology stack, the back-end uses the Koa2 framework, and the front-end and back-end data interaction uses WebSocket to ensure the real-time nature of the data. The project also supports theme switching to display cool chart effects. It also supports switching between large and small screens, ensuring that charts are presented on different screens.
How to access $vuetify instance in setup function
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Best way to preload route data before accessing the route.
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Course Introduction:PHP supports indexed arrays; indexed arrays are also called numeric arrays. By default, they are represented by index numbers. All elements of the array are represented by index numbers starting from 0. Indexed arrays can store numbers, strings, or any objects. Use "$array=array("array element", "array element"...);" to define the index array.
2022-07-22 comment 0 1542
Course Introduction:In PHP programming, array is a very important data type, which facilitates us to store, process and operate data. Among them, the index array is one of the most commonly used array types. It uses a number as the key name, corresponding to a numerical value or a string value. Here, we will discuss how to perform permutations on indexed arrays. 1. Array sorting method In PHP, we can use the sort() function to sort the index array in ascending order, and the rsort() function to sort the index array in descending order, as shown below: ```//Ascending order $numbers
2023-04-26 comment 0 253
Course Introduction:In PHP, an associative array is an array composed of key-value pairs, while an indexed array is an array with integer values as keys. Sometimes we may need to convert an associative array into an indexed array, which can facilitate some array operations. The following are some methods that can be used to convert an associative array into an indexed array: 1. array_values() function The PHP built-in function array_values() can return all the values in the array and reconstruct them into a new indexed array. Example:```php$asso
2023-05-06 comment 0 332
Course Introduction:PHP is a widely used server-side scripting language for developing dynamic websites and applications. In PHP, array is a common data type used to store multiple values. There are two types of arrays: indexed arrays and associative arrays. Indexed arrays use numbers as indexes, while associative arrays use strings as indexes. In some cases, we may need to convert an indexed array into an associative array. In this article we will discuss how to do this in php. First, let's look at how to create an indexed array. In php we can
2023-05-06 comment 0 388
Course Introduction:In PHP, an array is a data structure that can store multiple values. Among them, there are two different types of arrays: indexed arrays and associative arrays. The main difference between them is the way they are indexed. Indexed Arrays Indexed arrays are the most common array type in PHP. This type of array uses numeric indexing to access and manipulate array elements. Numeric indexing starts at zero, with the first element in the array having index 0, the second element having index 1, and so on. For example, a simple indexed array can be created and accessed using the following code: $fruits = array
2023-05-11 comment 0 542