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PHP Functions Online


strlen

(PHP 4, PHP 5)

strlenGet string length

int strlen(string $string)

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Preview #

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Description #

int strlen ( string $string )

Returns the length of the given string.

Parameters #

string

The string being measured for length.

Return Values #

The length of the string on success, and 0 if the string is empty.

Examples #

Example #1 A strlen() example

<?php
$str 
'abcdef';
echo 
strlen($str); // 6

$str ' ab cd ';
echo 
strlen($str); // 7
?>

Changelog #

Version Description
5.3.0 Prior versions treated arrays as the string Array, thus returning a string length of 5 and emitting an E_NOTICE level error.

Notes #

Note:

strlen() returns the number of bytes rather than the number of characters in a string.

Note:

strlen() returns NULL when executed on arrays, and an E_WARNING level error is emitted.

See Also #