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Course Introduction：This article discusses a technique to extract text between two distinct strings, using regular expressions. By defining a pattern to match the desired text between the specified strings, the article presents Python code that employs the re module to

2024-10-21 comment 0  813

Course Introduction：Parsing JSON with PHPJSON is a popular data format that is often used to exchange data between web applications and APIs. In PHP, the json_decode() function can be used to parse JSON strings into PHP arrays or objects.To parse JSON as an object, simp

2024-10-21 comment 0  1131

Course Introduction：To convert PHP arrays into strings, the most common method is to use the implode() function 1.implode() accepts connectors and arrays as parameters, and concatenates array elements into strings with specified characters; 2. For multi-dimensional arrays, they must be "flattened" into one-dimensional arrays through array_column() or recursively before converting; 3. To preserve the key-value pair relationship, you can use http_build_query() to generate a string in the form of URL query parameters; in addition, before processing, you should ensure that the array elements are of string type, and if necessary, you can use array_map('strval',$array) to convert.

2025-07-02 comment 0  866

Course Introduction：This article details how to efficiently and accurately extract the corresponding values of a specified key (such as name2) from complex strings containing key-value pairs (such as key:value) and mixed formats using regular expressions. The article will provide a common data extraction solution through a concrete PHP example, which deeply parses each component of the regular expression pattern used and provides implementation code to ensure that an empty string is returned when the target value does not exist.

2025-08-18 comment 0  1014

Course Introduction：Key Points PHP provides a large number of built-in string processing functions that can manipulate strings in various ways. These functions include changing the case of a string, finding the length of a string, replacing part of the string, and so on. Key functions include strlen(), str_replace(), strpos(), strtolower(), strtoupper(), and substr(). The trim() function in PHP can remove spaces at the beginning and end of a string or other specified characters, which helps to clean up user input before processing. The ltrim() and rtrim() functions perform similar operations, but only remove the left or right side of the string, respectively

2025-03-01 comment 0  527

Course Elementary  13899

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  82448

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  13242

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  24702

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  27544

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.