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PHP strlen () function

PHP String Reference PHP String Reference

Examples

Function returns the string "Hello" length:

<?php
echo strlen("Hello");
?>

Running instance »

Definition and Usage

strlen () function returns the length of the string.


grammar

strlen( string )

参数 描述
string 必需。规定要检查的字符串。

technical details

return value: If successful, the length of the string is returned if the string is empty it returns 0.
PHP version: 4+
Update log: Prior to PHP 5.3.0, the function of the array as a string Array, thus returning a string of length 5 and generate a E_NOTICE level error.


More examples

Example 1

Returns the string "Hello World" length:

<?php
echo strlen("Hello world!");
?>

Running instance »


PHP String Reference PHP String Reference