Course Introduction：There are four main ways to convert strings to uppercase in PHP, and the specific choice depends on the usage scenario. 1. Use strtoupper() to convert lowercase letters of the entire string to uppercase, which are suitable for English content, but do not support non-English characters with accents; 2. When dealing with multilinguals, mb_strtoupper() is recommended. It belongs to the mbstring extension and can correctly convert special characters such as French and German. It is recommended to specify the character set to UTF-8 when using it; 3. If you only need to convert the first letter, you can use ucfirst() to convert the first character of the string to uppercase; 4. If you want the first letter of each word to uppercase, you can use ucwords() to be used, which is suitable for formatting titles or usernames to display, but it does not recognize underscores by default.
2025-07-12 comment 0 930
Course Introduction：The methods for converting string case in PHP are: 1. strtoupper() convert all strings to uppercase; 2. strtolower() convert all strings to lowercase; 3. ucfirst() convert the first character of the string to uppercase; 4. ucwords() convert the first letter of each word to uppercase; 5. Use regular expressions and preg_replace_callback() to implement custom conversion; 6. Use mbstring extension to process multilingual text.
2025-05-28 comment 0 879
Course Introduction：You can use substr() or mb_substr() to get the first N characters in PHP. The specific steps are as follows: 1. Use substr($string,0,N) to intercept the first N characters, which is suitable for ASCII characters and is simple and efficient; 2. When processing multi-byte characters (such as Chinese), mb_substr($string,0,N,'UTF-8'), and ensure that mbstring extension is enabled; 3. If the string contains HTML or whitespace characters, you should first use strip_tags() to remove the tags and trim() to clean the spaces, and then intercept them to ensure the results are clean.
2025-07-11 comment 0 253
Course Introduction：In PHP, you can use two methods to convert snake_case to camelCase: 1. Use str_replace and ucwords to first uppercase the first letter of the underscore, then remove the underscore, and finally use lcfirst to ensure lowercase; 2. Use preg_replace_callback regular expression to complete the conversion step by step, match the lowercase letters after the underscore and convert them to uppercase; In addition, if the input may be in all uppercase format, it is recommended to convert to lowercase first to ensure consistency. At the same time, pay attention to the underscore when processing strings containing numbers or other symbols, you should ensure that letters are after underscore.
2025-07-11 comment 0 447
Course Introduction：Daily JavaScript Challenge: Capitalize the first letter of every word Hello fellow developers! ? Welcome to today’s JavaScript coding challenge. Let’s keep your programming skills sharp together! challenge Difficulty: Easy Topic: String Operations describe Write a function that receives a string as input and returns a string in which the first letter of each word is capitalized. A word is defined as a sequence of characters separated by spaces. Ready to get started? https://www.dpcdev.com/ Fork this challenge Write your solution Test against the provided test cases Share your methods in the comments below! Want to know more letter
2025-01-24 comment 0 775
Course Elementary 13747
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 82260
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 13131
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 24578
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 27436
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.
javascript - js input box word limit problem
2017-07-05 10:38:10 0 6 1036
2017-06-24 09:42:17 0 7 1049
2017-05-24 11:31:19 0 2 798
How to handle Uncaught Error: PHP/Composer class not found?
2023-09-04 13:46:14 0 1 634
Try using htmlentities to convert latin characters
2023-09-10 20:57:45 0 1 770
