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Course Introduction：This article focuses on converting various smart quotes into regular quotes in PHP. It introduces an enhanced function that addresses shortcomings in previous methods and provides comprehensive mapping for a wide range of smart quote characters. The

2024-10-22 comment 0  630

Course Introduction：Inverting strings can be implemented in PHP through a variety of methods: 1. Use the strrev() function to quickly invert English strings, but are not suitable for multi-byte characters; 2. For strings containing Unicode characters such as Chinese, you can customize the mb_strrev() function, and use mb_strlen() and mb_substr() to operate according to characters to avoid garbled code; 3. You can also use array operations to split the string into an array, invert and then splice it. The logic is clear and suitable for teaching, but the performance may not be optimal. The appropriate method should be chosen for different scenarios.

2025-07-10 comment 0  969

Course Introduction：Using mb_substr() is the correct way to solve the problem of Unicode string interception in PHP, because substr() cuts by bytes and causes multi-byte characters (such as emoji or Chinese) to be truncated into garbled code; while mb_substr() cuts by character, which can correctly process UTF-8 encoded strings, ensure complete characters are output and avoid data corruption. 1. Always use mb_substr() for strings containing non-ASCII characters; 2. explicitly specify the 'UTF-8' encoding parameters or set mb_internal_encoding('UTF-8'); 3. Use mb_strlen() instead of strlen() to get the correct characters

2025-07-27 comment 0  902

Course Introduction：The core method of converting PHP arrays into query strings is to use the http_build_query function, which can automatically handle nested arrays and encoding problems; for simple structures, you can also manually splice them, but you need to pay attention to rawurlencode and ending symbol processing; in addition, characters such as spaces, Chinese and other characters in the parameters will be encoded, and the front and back ends need to uniform encoding specifications to avoid parsing errors. The specific steps are as follows: 1. It is recommended to use the built-in function http_build_query, which will automatically encode the key value and retain the index; 2. For simple arrays, you can manually traverse the splicing, but it needs to be used with rawurlencode; 3. Pay attention to the consistency of special characters in the query string, and you can use parse_

2025-07-07 comment 0  377

Course Introduction：Correctly dealing with JSON slashes and special characters in PHP requires understanding the escape mechanism and using appropriate options. 1.json_encode() will automatically escape double quotes and backslashes. The additional backslashes displayed in the output are required for legal JSON format and will return to normal after parsing; 2. Use JSON_UNESCAPED_SLASHES to avoid slashes being escaped, making the URL clearer; 3. Use JSON_UNESCAPED_UNICODE to retain Unicode characters such as Chinese and emoji instead of converting them to \uXXXX sequences; 4. Ensure that the input is UTF-8 encoding and set header('Content-Type:application/jso

2025-07-28 comment 0  973

Course Elementary  13825

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  82361

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  13181

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  24630

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  27488

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.