Search Results

1. www.php.net › manual › enPHP: strtoupper - Manual

   www.php.net › manual › en

   Bytes in the range "a" (0x61) to "z" (0x7a) will be converted to the corresponding uppercase letter by subtracting 32 from each byte value. This can be used to convert ASCII characters within strings encoded with UTF-8, since multibyte UTF-8 characters will be ignored. To convert multibyte non-ASCII characters, use mb_strtoupper ().

   • Sprintf

     Sprintf - PHP: strtoupper - Manual

   • Printf

     Printf - PHP: strtoupper - Manual

   • Fprintf

     Parameters ¶ stream A file system pointer resource that is...

   • Vsprintf

     Vsprintf - PHP: strtoupper - Manual

   • Vfprintf

     Parameters ¶ stream format The format string is composed of...

   • Functions

     Functions Functions ¶ Table of Contents ¶ User-defined...

   • Strcmp

     strcmp (PHP 4, PHP 5, PHP 7, PHP 8) strcmp — Binary safe...

   • Bin2hex

     Convert binary data into hexadecimal representation

2. www.w3schools.com › PHP › func_string_strtoupperPHP strtoupper () Function - W3Schools

   www.w3schools.com › PHP › func_string_strtoupper

   Definition and Usage The strtoupper () function converts a string to uppercase. Note: This function is binary-safe. Related functions: strtolower () - converts a string to lowercase lcfirst () - converts the first character of a string to lowercase ucfirst () - converts the first character of a string to uppercase ucwords () - converts the first character of each word in a string to uppercase

3. www.geeksforgeeks.org › php › php-strtoupper-functionPHP strtoupper () Function - GeeksforGeeks

   www.geeksforgeeks.org › php › php-strtoupper-function

   Sep 11, 2024 · The PHP strtoupper () function converts all alphabetic characters in a given string to uppercase. It takes a string as an argument and returns a new string with all letters capitalized, leaving non-alphabetic characters unchanged.

4. www.tutorialrepublic.com › php-reference › phpPHP strtoupper () Function - Tutorial Republic

   www.tutorialrepublic.com › php-reference › php

   PHP strtoupper () Function Topic: PHP String Reference Prev | Next Description The strtoupper() function converts a string to uppercase. The following table summarizes the technical details of this function.

   • Return Value: Returns the modified string.

   • Version: PHP 4+

5. www.tutorialspoint.com › php › php_functionPHP strtoupper Function - Online Tutorials Library

   www.tutorialspoint.com › php › php_function

   Learn about the PHP strtoupper function, which converts a string to uppercase. Discover its syntax, usage, and practical examples in this detailed tutorial.

6. www.oujood.com › ref-fonc-php › fonction-strtoupperFonction strtoupper() PHP : Convertir une chaîne en majuscules

   www.oujood.com › ref-fonc-php › fonction-strtoupper

   Guide complet de la fonction strtoupper() en PHP. Apprenez à convertir facilement des chaînes de caractères en majuscules avec exemples pratiques et syntaxe détaillée.

7. People also ask

   What does strtoupper do in PHP?

   • The PHP strtoupper () function converts all alphabetic characters in a given string to uppercase. It takes a string as an argument and returns a new string with all letters capitalized, leaving non-alphabetic characters unchanged. Parameter: The only parameter to this function is a string that is to be converted to upper case.

   PHP strtoupper () Function - GeeksforGeeks

   www.geeksforgeeks.org/php/php-strtoupper-function/

   See all results for this question

   What is strtoupper() function?

   • The strtoupper() function converts a string to uppercase. The following table summarizes the technical details of this function. Returns the modified string. The basic syntax of the strtoupper() function is given with: The following example shows the strtoupper() function in action. $str = "Hello WORLD!";

   PHP strtoupper () Function - Tutorial Republic

   www.tutorialrepublic.com/php-reference/php-strtoupper-function.php

   See all results for this question

   What is strtoupper in JavaScript?

   • The signature is simple: string strtoupper (string $string) The important part is not the signature. It is the behavior boundary. In classic usage, strtoupper() is byte-oriented and reliable for basic Latin letters (a-z). That is perfect for many backend tasks such as normalizing internal keys, environment labels, status flags, and protocol tokens.

   PHP strtoupper () Function: A Production-Focused Guide to Safe

   thelinuxcode.com/php-strtoupper-function-a-production-focused-guide-to-safe-predictable-uppercasing/

   See all results for this question

   How to convert a string to uppercase in PHP?

   • ❮ PHP String Reference Convert all characters to uppercase: echo strtoupper ("Hello WORLD!"); The strtoupper () function converts a string to uppercase. Note: This function is binary-safe. Related functions: Required. Specifies the string to convert

   PHP strtoupper () Function - W3Schools

   www.w3schools.com/PHP/func_string_strtoupper.asp

   See all results for this question

8. thelinuxcode.com › php-strtoupper-function-aPHP strtoupper () Function: A Production-Focused Guide to ...

   thelinuxcode.com › php-strtoupper-function-a

   Feb 13, 2026 · I still see production bugs caused by one small assumption: uppercasing a string is trivial. It looks trivial right until your login identifier contains accented letters, your import job handles mixed encodings, or your audit logs need strict normalization across systems. strtoupper() is one of those tiny PHP functions that can either make your data […]