posix_eaccess

(PHP 8 >= 8.3.0)

posix_eaccess Determine accessibility of a file

Description

posix_eaccess(string $filename, int $flags = 0): bool

posix_eaccess() checks the effective user's permission of a file

Parameters

filename

The name of a file to be tested.

flags

A mask consisting of one or more of POSIX_F_OK, POSIX_R_OK, POSIX_W_OK and POSIX_X_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.

Return Values

Returns true on success or false on failure.

Changelog

Version Description
8.3.0 Checks the effective user/group for a file, differing from posix_access() which checks from the real user/group.

Examples

Example #1 posix_eaccess() example

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

<?php

$file
= 'some_file';

if (
posix_eaccess($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);
}

?>

Notes

See Also

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