PHP strlen()

Get string length

Function Signature

int strlen(string $string)

Description

Get string length. The strlen() function is commonly used in PHP for string operations and provides reliable functionality across all PHP versions.

Return Value

Returns the length of the string

Example Usage

Important Notes

Returns 0 for empty strings. Counts bytes, not characters (important for multibyte strings).

Common Use Cases

The strlen() function is particularly useful when you need to get string length. It's frequently used in data processing, validation, transformation, and manipulation tasks throughout PHP applications.

strlen() FAQ

What does strlen() return?

Returns the length of the string

When should I use strlen()?

Use strlen() when you need to get string length in your PHP code. It's a reliable built-in function available in all PHP versions.

Are there any gotchas with strlen()?

Returns 0 for empty strings. Counts bytes, not characters (important for multibyte strings).