Course Elementary  14106

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 Intermediate  6191

Course Introduction：This course is a very comprehensive set of courses. The video knowledge covers the basics, advanced, operation and maintenance of MySQL and many other aspects. The course content is comprehensive and in-depth, which can fully meet our daily development, operation and maintenance, interviews, and self-improvement. It also uses a variety of methods during the explanation process to help students understand the key and difficult content in the course more clearly.

Course Elementary  3143

Course Introduction：Reprinted from Bilibili: https://www.bilibili.com/video/BV1Ja411c74f

Course Intermediate  3962

Course Introduction：Digital signature generation and verification principles, AES and RSA encryption and decryption

Course Introduction：Roman Numerals - Based on the ancient Roman system that uses symbols to represent numbers. These numbers are called Roman numerals. The symbols are I, V, X, L, C, D and M, which represent 1, 5, 10, 50, 100, 500 and 1,000 respectively. Integers - An integer is an integer consisting of positive, negative and zero values. Fractions are not whole numbers. Here we set the symbol value based on the integer value. Whenever a Roman numeral is given as input, we divide it into units and then calculate the appropriate Roman numeral. I-1II–2III–3IV–4V–5VI–6…X–10XI–11..XV-15 In this article, we will learn how to convert Roman numerals to integers in Java. Show you some examples - Example 1InputR

2023-08-25 comment 0  966

Course Introduction：Extracting Digits from an IntegerHow can you break down an integer into a list of its individual digits? For instance, transforming 12345 into [1,...

2024-11-06 comment 0  791

Course Introduction：Returning Integer and Numeric Columns from MySQL as PHP Integers and NumericsIssue:Query results are returning all columns as string types,...

2024-12-08 comment 0  978

Course Introduction：Recently, many friends have asked the editor how to round numbers in Microsoft Excel. Next, let us learn how to round numbers in Microsoft Excel. I hope it can help everyone. 1. First open Microsoft Excel, and then enter some numbers, as shown in the figure below. 2. Then you can click "Insert Function" in the upper left corner, as shown in the figure below. 3. Enter "round" in the search bar and select "round", as shown in the figure below. 4. Enter 0 in "Num_digits" in the function parameter menu and click OK, as shown in the figure below. The above is what the editor brings to you how to round up numbers in Microsoft Excel.

2024-03-04 comment 0  843

Course Introduction：In Oracle, you can set a numeric field to retain only the integer part through the following steps: 1. Create a numeric field, specify the precision and decimal places as 0; 2. Insert a number with a decimal part; 3. Use the TO_NUMBER() function to convert the data type is an integer; 4. Update the data in the table; 5. Query the data again to verify whether the update is successful. These steps ensure that numeric fields retain only the integer portion.

2024-04-30 comment 0  777