POSIX 함수 목록
posix_ctermid
POSIX 함수 목록
PHP Manual

# posix_access

(PHP 5 >= 5.1.0)

posix_access — Determine accessibility of a file

### 설명

bool posix_access ( string `$file` [, int `$mode`= POSIX_F_OK ] )

posix_access() checks the user's permission of a file.

### 인수

`file`

  The name of the file to be tested.

`mode`

  A mask consisting of one or more of `POSIX_F_OK`, `POSIX_R_OK`, `POSIX_W_OK` and `POSIX_X_OK`. Defaults to `POSIX_F_OK`.

  `POSIX_R_OK`, `POSIX_W_OK` and `POSIX_X_OK` request checking whether the file exists and has read, write and execute permissions, respectively. `POSIX_F_OK` just requests checking for the existence of the file.

### 반환값

성공할 경우 `TRUE`를, 실패할 경우 `FALSE`를 반환합니다.

### 예제

Example #1 posix_access() example

This example will check if the $file is readable and writable, otherwise will print an error message.

`<?php
$file = 'some_file';
if (posix_access($file, POSIX_R_OK | POSIX_W_OK)) {
echo 'The file is readable and writable!';
} else {
$error = posix_get_last_error();
echo "Error $error: " . posix_strerror($error);
}
?>`

### 주의

> Note: 안전 모드일 때, PHP는 조작하려는 파일이나 디렉토리가 실행중인 스크립트와 같은 UID(owner)인지 확인합니다.

### 참고

- posix_get_last_error() - Retrieve the error number set by the last posix function that failed
- posix_strerror() - Retrieve the system error message associated with the given errno

POSIX 함수 목록
posix_ctermid
POSIX 함수 목록
PHP Manual