Course Introduction：This article aims to provide a solution for processing mobile phone number data pasted in textarea areas in PHP forms. This solution can automatically clean the data in the textarea, retain only 10-digit valid mobile phone numbers, and count the number of valid numbers in real time. It is also compatible with the user's needs to manually enter numbers, ensuring the accuracy of number counting.
2025-08-13 comment 0 383
Course Introduction：Data anonymization can be implemented in MySQL in a variety of ways to protect sensitive information. First, replace the field value and use random data to replace fields such as name and phone number, such as using ELT to generate a new name; second, use hash function to maintain consistency, such as using MD5 to combine salt values to generate fixed substitution values; third, partial masking or fuzzing processing, such as using SUBSTR and CONCAT for ID card numbers to hide the intermediate part; in addition, attention should be paid to backing up the original data, priority operation in the replica library, consideration of performance impact, combination with desensitization tools, and verification of desensitization effects.
2025-07-27 comment 0 173
Course Introduction：SqlParameter Parameters.Add vs. AddWithValue: Choosing the Best MethodWhen working with SQL commands, you may encounter the need to add...
2025-01-10 comment 0 736
Course Introduction：In Dave The Diver, there are some creatures that are not easy to catch. Or, catch alive that is. The spider crab is one of those very species, making it seem like the only way to bring these crustaceans back up to land is to viciously crack them up w
2025-01-10 comment 0 934
Course Introduction：Conditional Column CountingConsider a table named "Jobs" structured as follows:jobId, jobName, Prioritywhere "Priority" is an integer between 1...
2025-01-10 comment 0 932
Course Elementary 13927
Course Introduction：Scala Tutorial Scala is a multi-paradigm programming language, designed to integrate various features of object-oriented programming and functional programming.
Course Elementary 82482
Course Introduction："CSS Online Manual" is the official CSS online reference manual. This CSS online development manual contains various CSS properties, definitions, usage methods, example operations, etc. It is an indispensable online query manual for WEB programming learners and developers! CSS: Cascading Style Sheets (English full name: Cascading Style Sheets) is an application used to express HTML (Standard Universal Markup Language).
Course Elementary 13266
Course Introduction：SVG is a markup language for vector graphics in HTML5. It maintains powerful drawing capabilities and at the same time has a very high-end interface to operate graphics by directly operating Dom nodes. This "SVG Tutorial" is intended to allow students to master the SVG language and some of its corresponding APIs, combined with the knowledge of 2D drawing, so that students can render and control complex graphics on the page.
Course Elementary 24732
Course Introduction：In the "AngularJS Chinese Reference Manual", AngularJS extends HTML with new attributes and expressions. AngularJS can build a single page application (SPAs: Single Page Applications). AngularJS is very easy to learn.
Course Elementary 27566
Course Introduction：Go is a new language, a concurrent, garbage-collected, fast-compiled language. It can compile a large Go program in a few seconds on a single computer. Go provides a model for software construction that makes dependency analysis easier and avoids most C-style include files and library headers. Go is a statically typed language, and its type system has no hierarchy. Therefore users do not need to spend time defining relationships between types, which feels more lightweight than typical object-oriented languages. Go is a completely garbage-collected language and provides basic support for concurrent execution and communication. By its design, Go is intended to provide a method for constructing system software on multi-core machines.
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