Web Reference: See Also ¶ strtoupper () - Make a string uppercase ucfirst () - Make a string's first character uppercase ucwords () - Uppercase the first character of each word in a string mb_strtolower () - Make a string lowercase Definition and Usage The strtolower () function converts a string to lowercase. Note: This function is binary-safe. Related functions: strtoupper () - converts a string to uppercase lcfirst () - converts the first character of a string to lowercase ucfirst () - converts the first character of a string to uppercase Jan 10, 2024 · This tutorial provides an in-depth look at converting strings to both lowercase and uppercase, demonstrating functions like strtolower() and strtoupper() as well as more nuanced approaches suitable for multibyte character encodings.
YouTube Excerpt: In this video we show how to convert characters to lowercase and to uppercase.
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