PHP funkce count_chars()

Dostupnost ve verzích: PHP 4.0

Return information about characters used in a string

Parametry

Parametr	Datový typ	Výchozí hodnota	Poznámka
$string	string		The examined string.
$mode	int	null	See return values.

Návratové hodnoty

mixed

Depending on mode count_chars returns one of the following: 0 - an array with the byte-value as key and the frequency of every byte as value. 1 - same as 0 but only byte-values with a frequency greater than zero are listed. 2 - same as 0 but only byte-values with a frequency equal to zero are listed. 3 - a string containing all unique characters is returned. 4 - a string containing all not used characters is returned.

Další zdroje

https://php.net/manual/en/function.count-chars.php