Search results for: "uppercase umlauts"

How can you ensure that only letters are converted to uppercase in a PHP string, while leaving numbers unchanged?

To ensure that only letters are converted to uppercase in a PHP string while leaving numbers unchanged, you can use the `preg_replace_callback` functi...

How can PHP code be optimized to handle user input in different formats, such as lowercase and uppercase?

When handling user input in different formats, such as lowercase and uppercase, it is important to normalize the input to a consistent format for proc...

Are there any specific PHP functions or methods that can simplify the process of extracting lowercase strings surrounded by uppercase characters in a given string?

To extract lowercase strings surrounded by uppercase characters in a given string, we can use regular expressions in PHP. Specifically, we can use the...

How can regular expressions be used effectively to extract specific patterns from PHP strings, such as lowercase strings between uppercase strings?

Regular expressions can be used effectively in PHP to extract specific patterns from strings by using functions like `preg_match()` or `preg_match_all...

How can the strtoupper() function in PHP be used effectively to convert strings to uppercase, especially when dealing with special characters?

When dealing with special characters, the strtoupper() function in PHP may not always convert them to uppercase correctly. To address this issue, you...