📏 strlen() in PHP — String Length Function

The strlen() function in PHP is used to get the number of characters in a string (including spaces and special characters).

✅ Syntax:

strlen(string $string): int

📘 Examples:

1. Basic Usage:

echo strlen("Hello"); 
// Output: 5

2. With Spaces:

echo strlen("Hello World"); 
// Output: 11

3. With Special Characters:

echo strlen("Hi 😊"); 
// Output: 5 (because emojis may count differently depending on encoding)

4. Empty String:

echo strlen(""); 
// Output: 0

⚠️ Note:

• strlen() counts bytes, not characters in multibyte strings (like UTF-8 emojis or some foreign languages).
• For multibyte-safe length, use mb_strlen().