PHP strlen()Functions
Examples
The function returns the length of the string "Hello":
<?php
echo strlen("Hello");
?>
echo strlen("Hello");
?>
Run Example »
Definition and Usage
The strlen() function returns the length of a string. For processing Chinese strings, use themb_strlen() function。。
Syntax
strlen(string)
| Parameters | Description |
|---|---|
| string | Required. Specifies the string to be checked. |
Technical Details
| Return Value: | Returns the length of the string on success, or 0 if the string is empty. |
|---|---|
| PHP Version: | 4+ |
| Changelog: | Before PHP 5.3.0, this function treated an array as a stringArray, thus returning a string of length 5 and producing an E_NOTICE level error. |
More Examples
Example 1
Returns the length of the string "Hello World":
<?php
echo strlen("Hello world!");
?>
echo strlen("Hello world!");
?>
Run Example »
PHP String Reference Manual Other Extensions