What is the chown() function in PHP?
chown() is a built-in function in PHP that changes the owner or user group of a file. Only the superuser has the privileges to change the ownership of a file.
Syntax
chown(string $filename, string|int $user): bool
Parameters
filename: The name of the file as a string.user: The name of the user as either a string or an integer.
Return value
chown() returns true on success and false on failure.
Code
main.php
temp
<?php$file_name= "temp";$path = "./" . $file_name ;$user_name = "root";chown($path, $user_name);$stat = stat($path);$usr = strval($stat['uid']);print_r("UID: ".$usr."(root)\n");print_r(posix_getpwuid($stat['uid']));?>
The code above shows how the chown() function is used. We provide the user_name and path to chown() and it changes the owner to user_name. The stat() function provides information about a file, which is the temp file in this case. Lastly, we print the UID, which is 0. This denotes that the UID of the file’s owner is indeed root.
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