(PHP 4, PHP 5, PHP 7)
Get string length
int strlen ( string $string )
Returns the length of the given string.
Parameters:
string
The string being measured for length.
Returns:
The length of the string on success, and 0 if the string is empty.
Changelog:
5.3.0
Prior versions treated arrays as the string Array, thus returning a string length of 5 and emitting an E_NOTICE level error.
Notes:
strlen() returns the number of bytes rather than the number of characters in a string.
strlen() returns NULL when executed on arrays, and an E_WARNING level error is emitted.
Examples:
A strlen() example
1 2 3 4 5 6 7 | <?php$str = 'abcdef';echo strlen($str); // 6$str = ' ab cd ';echo strlen($str); // 7?> |
See also:
count() -
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