Code Examples -> Shows how to parse a file and how to use the new __get magic method (PHP5). The provided class can be used in any unix-like environment to retrieve user information (you must have access to /etc/passwd in order to work).

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PHP Code Examples

Title :	Shows how to parse a file and how to use the new __get magic method (PHP5). The provided class can be used in any unix-like environment to retrieve user information (you must have access to /etc/passwd in order to work).
Categories :	PHP, PHP Classes, Filesystem	Víctor Román Archidona
Date :	Jul 09th 2007
Grade :	5 of 5 (graded 1 times)
Viewed :	2151
File :	4673.zip
Images :	No Images for this code example.

Search :	More code by Víctor Román Archidona
Action :	Grade This Code Example
Tools :	My Examples List

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Usage Example

<?php
require_once "userinfo.class.php";

$user = new UserInfo("apache");

echo "Username: ".$user->username."\n";
echo "User ID: ".$user->uid."\n";
echo "Group ID: ".$user->gid."\n";
echo "Comment: ".$user->comment."\n";
echo "Home: ".$user->home."\n";
echo "Shell: ".$user->shell."\n";
?>

userinfo.class.php

<?php
/*
* Simple script to retrieve the user information from an
* /etc/passwd file for unix-like OSes
*
* Copyright (C) 2007 Victor Roman Archidona
* http://blog.daijo.org
*/

class UserInfo
{
private $_user_info = null;

public function __construct($user)
{
$entry = $this->getUserEntry($user);
$this->processUserEntry($entry);
}

public function getUserInfo()
{
return $this->_user_info;
}

public function __get($var)
{
if (array_key_exists($var, $this->_user_info))
return $this->_user_info[$var];

return null;
}

private function processUserEntry($entry)
{
list($this->_user_info["username"],
$this->_user_info["unused"],
$this->_user_info["uid"],
$this->_user_info["gid"],
$this->_user_info["comment"],
$this->_user_info["home"],
$this->_user_info["shell"]) = explode(":", $entry);

$this->_user_info["shell"] = trim($this->_user_info["shell"]);
}

private function getUserEntry($user)
{
$passwd_file = "/etc/passwd";

if (!is_file($passwd_file))
throw new Exception ("File $passwd_file does not exists");

if (!is_readable($passwd_file))
throw new Exception ("File $passwd_file cannot be read");

$passwd_content = file($passwd_file);

foreach ($passwd_content as $entry) {
$params = explode(":", $entry);

/* We can find by username or by uid: */
$search = is_numeric($user) ? $params[2] : $params[0];

if ($search == $user)
return $entry;
}

return null;
}

}
?>

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