octdec

(PHP 4, PHP 5, PHP 7)

octdec8진수를 10진수로

설명

number octdec ( string $octal_string )

octal_string 인수로 표현되는 8진수에 해당하는 10진수를 반환합니다.

인수

octal_string

변환할 8진 문자열

반환값

octal_string의 10진 표현

변경점

버전 설명
4.1.0부터 플랫폼의 integer형에 들어가지 않은 큰 수도 변환할 수 있게 되었습니다. 큰 수는 float로 반환합니다.

예제

Example #1 octdec() 예제

<?php
echo octdec('77') . "\n";
echo 
octdec(decoct(45));
?>

위 예제의 출력:

63
45

참고

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User Contributed Notes 3 notes

up
6
contato at andersonfraga dot net
12 years ago
Number is octal?

Simple and easy:

<?php

function is_octal($x) {
    return
decoct(octdec($x)) == $x;
}

echo
is_octal(077); // true
echo is_octal(195); // false

?>

Thanks
[]'s
up
0
Anonymous
18 years ago
The 'S' flag for Unix file access rights is badly computed in the above sample.
If the corresponding 'x' bit (exec) is not set, and the 's' bit (setgid/setuid/sticky) is set, then the flag should not be displayed as and uppercase 'S', but as a lower case 's'. Also the sticky bit (mainly used for folders with public right access rights such as /tmp to protect against deletion by non owner) is badly named ("text"?).
up
-3
harry at disgruntledgoat dot com
13 years ago
Calling the sticky bit "text" is not erroneous: On UNIX back in 1974, it instructed the operating system to retain the text segment of the program in swap space after the process exited. This speeded subsequent executions by allowing the kernel to make a single operation of moving the program from swap to real memory.
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