Course Elementary  29833

Course Introduction：A classic introduction to PHP string operations, including how to declare, type conversion, variable parsing, commonly used string functions and practical cases

Course Elementary  17328

Course Introduction："Memcached Command Operation Manual" is the latest official Memcached online reference manual. In this Memcached document, various Memcached operation commands are provided with Chinese explanations. You will learn how to use Memcached to reduce database load and improve performance. It is a must-have online query reference document tutorial for Memcached learners and users!

Course Intermediate  22868

Course Introduction：Many students do not know enough about the operation of PHP files when they are basic in PHP. This lesson will take you to learn the basic operations of PHP files. The main functions used in PHP file operations are PHP file-related functions. So we will mainly talk about That is, various functions related to PHP files. I believe this course will make you more interested in PHP!

Course Intermediate  1617

Course Introduction：Many students do not know enough about the operation of PHP files when they are basic in PHP. This lesson will take you to learn the basic operations of PHP files. The main functions used in PHP file operations are PHP file-related functions. So we will mainly talk about That is, various functions related to PHP files. I believe this course will make you more interested in PHP!

Course Introduction：The new operator is a keyword used in programming languages ​​to dynamically allocate memory space. The function of the new operator is to allocate memory for an object or data type in the heap (Heap) and return a pointer to the memory space. The general syntax of the new operator is "new type; new type[size];". The new operator returns a pointer to the newly allocated memory space through which the object or array can be accessed and manipulated.

2023-11-14 comment 0  1018

Course Introduction：The new operator can do: 1. Allocate memory space: the new operator will allocate a memory space of sufficient size in the heap memory to store the object's data; 2. Call the constructor: after allocating the memory space, the new operator The constructor of the object will be called and the member variables of the object will be initialized; 3. Return pointer: The new operator returns a pointer to the newly allocated memory space through which the object can be accessed and manipulated.

2023-11-14 comment 0  1745

Course Introduction：The role of the new operator is to create objects, allocate memory space, inheritance, constructor execution, error handling, etc. Detailed introduction: 1. Create an object. The most common function of the new operator is to create a new object in object-oriented programming. It is implemented by calling the constructor of the object. The constructor is a special method used to initialize the object. Properties and methods, when using the new operator to create an object, the constructor will first be called, and then a reference to the newly created object will be returned; 2. Allocate memory space, the new operator will be used when creating the object, etc.

2023-11-13 comment 0  2054

Course Introduction：The principle of the new operator is to create an object instance by creating an empty object, pointing the this keyword to the new object, executing the constructor code and returning the new object. The working principle of the new operator: 1. Create an empty object. The new operator will first create an empty object, which will inherit from the prototype of the constructor; 2. Point this to the new object, and the new operator will create an empty object in the constructor. The this keyword points to this new object; 3. Execute the constructor code, the new operator will execute the code in the constructor, etc.

2023-11-13 comment 0  1323