PHPCon Poland 2024


(PHP 8 >= 8.3.0)

posix_eaccess Determine accessibility of a file


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

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

Liste de paramètres


The name of a file to be tested.


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.

Valeurs de retour

Cette fonction retourne true en cas de succès ou false si une erreur survient.


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


Exemple #1 posix_eaccess() example

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


= 'some_file';

if (
posix_eaccess($file, POSIX_R_OK | POSIX_W_OK)) {
'The file is readable and writable!';

} else {
$error = posix_get_last_error();

"Error $error: " . posix_strerror($error);


Voir aussi

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