count_chars

(PHP 4 , PHP 5)

count_chars --  문자열 안에 사용한 문자에 대한 정보를 반환합니다.

설명

mixed count_chars ( string string [, int mode])

string 안의 모든 바이트값(0..255)의 발견 수를 세고 여러 방법으로 반환합니다. 선택적인 인자 mode의 기본값은 0입니다. mode에 따른 count_chars()의 반환값은 다음과 같습니다:

예 1. count_chars() 예제

<?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";
}

?>

출력은:

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.

참고: strpos(), substr_count().