count_chars

(PHP 4 , PHP 5)

count_chars --  Retorna informações sobre os caracteres usados numa string

Descrição

mixed count_chars ( string string [, int mode] )

Conta o número de ocorrências de cada byte-value (0..255) na string e retorna ela de várias maneiras. O parâmetro original Mode por definição 0. A depender do mode count_chars() pode retornar os seguintes:

Exemplo 1. Exemplo count_chars()

<?php

$data
= "Two Ts and one F.";

$result = count_chars($data, 0);

for (
$i=0; $i < count($result); $i++) {
   if (
$result[$i] != 0)
       echo
"There were $result[$i] instance(s) of \"" , chr($i) , "\" in the string.\n";
   }

?>

Isto irá mostrar:

There were 4 instance(s) of " " in the string.
There were 1 instance(s) of "." in the string.
There were 1 instance(s) of "F" in the string.
There were 2 instance(s) of "T" in the string.
There were 1 instance(s) of "a" in the string.
There were 1 instance(s) of "d" in the string.
There were 1 instance(s) of "e" in the string.
There were 2 instance(s) of "n" in the string.
There were 2 instance(s) of "o" in the string.
There were 1 instance(s) of "s" in the string.
There were 1 instance(s) of "w" in the string.

Veja também strpos() e substr_count().