get_current_user()

(PHP 4, PHP 5, PHP 7)

获取当前 PHP 脚本所有者名称

说明

get_current_user(void): string

返回当前 PHP 脚本所有者名称。

返回值

以字符串返回用户名。

范例

Example #1get_current_user()例子

<?php
echo 'Current script owner: ' . get_current_user();
?>

以上例程的输出类似于：

Current script owner: SYSTEM

参见

• getmyuid() 获取 PHP 脚本所有者的 UID
• getmygid() 获取当前 PHP 脚本拥有者的 GID
• getmypid() 获取 PHP 进程的 ID
• getmyinode() 获取当前脚本的索引节点（inode）
• getlastmod() 获取页面最后修改的时间

to get the username of the process owner (rather than the file owner), you can use:
<?php
$processUser = posix_getpwuid(posix_geteuid());
print $processUser['name'];
?>

On Centos, the Red Hat linux clone, this instruction gives the file's OWNER (the first parameter in instruction 'chown'). It does not reveal the file's GROUP.
get_current_user() does NOT reveal the current process' user's identity.
See: posix_getuid() - Return the real user ID of the current process

The information returned by get_current_user() seems to depend on the platform.
Using PHP 5.1.1 running as CGI with IIS 5.0 on Windows NT, get_current_user() returns the owner of the process running the script, *not* the owner of the script itself.
It's easy to test - create a file containing:
<?php
  echo get_current_user();
?>
Then access it through the browser. I get: IUSR_MACHINE, the Internet Guest Account on Windows, which is certainly not the owner of the script.

If you have userdir enabled, get_current_user() returns the username of the user hosting the public_html. For example, http://example.com/~bobevans/somescript.php will return bobevans when calling get_current_user().

Since this only returns the file owner and not the actual user running the script, an alternative in Linux is:
<?php
$current_user = trim(shell_exec('whoami'));
?>

If you want to get the name of the user who executes the current PHP script, you can use
<?php
$username = getenv('USERNAME') ?: getenv('USER');
echo $username; // e.g. root or www-data
?>