<?php
header('Content-Type: text/html; charset="UTF-8"'); // Кодировка
$f = file($_SERVER['DOCUMENT_ROOT'].'/config.php');
$stroka = $f[2];
// $enter = substr($stroka, 6).;
$mb = mb_substr($stroka, 6, -4);
if(isset($_POST['GoValuev']))
{
	
}
echo '<form action="" method="post">
	<input type="text" name="Mmas" value="'.$mb.'" size="30">
	<input type="submit" name="GoValuev" value="Сменить">
</form>';
?>

file_put_contents('fileName.txt', $_POST['Mmas'], FILE_APPEND);

$mas = file("fileName.txt");

echo '<form action='.$_SERVER['PHP_SELF'].' method="post" >
<textarea name="text" rows="10" cols="50">';
foreach ($mas as $val) {
	echo $val;
}
echo '</textarea>
<input type="submit" name="n" value="go"
</form>';


if (isset($_POST['text'])) {
$hand = fopen("fileName.txt","w+");
fwrite($hand,$_POST['text']);
echo '<script type="text/javascript"  language="javascript"> document.location.reload(); </script>';
}

<?php
header('Content-Type: text/html; charset="UTF-8"'); // Кодировка
echo 'Сменить';
define('HOST', 'localhost');
define('USER', 'root');
define('PASS', 'vertrigo');
define('TABLE', 'fantastisch');
$q = mysql_connect(HOST, USER, PASS);
mysql_select_db(TABLE, $q);
mysql_set_charset('utf8');
$query_peremens = mysql_query("SELECT * FROM `config`") or die(mysql_error()); // Запрашиваем переменные
while($peremens = mysql_fetch_assoc($query_peremens))
{
	$$peremens['peremens'] = $peremens['content'];
}
?>

<?php
header('Content-Type: text/html; charset="UTF-8"'); // Кодировка
$f = file($_SERVER['DOCUMENT_ROOT'].'/config.php');
$stroka = $f[2];
// $enter = substr($stroka, 6).;
$mb = mb_substr($stroka, 6, -4);
if(isset($_POST['GoValuev']))
{
	$f[2] = str_replace($mb, $_POST['GoValuev'], $stroka);
	file_put_contents($_SERVER['DOCUMENT_ROOT'].'/config.php', $f);
}
echo '<form action="" method="post">
	<input type="text" name="Mmas" value="'.$mb.'" size="30">
	<input type="submit" name="GoValuev" value="Сменить">
</form>';
?>

<?php
error_reporting(E_ALL | E_STRICT);
ini_set('dispay_errors', 'On');

header('Content-Type: text/html; charset="UTF-8"'); // Кодировка
// ....

$title = 'Mail Site';

title = "Заголовок"
description = "Описание"

$data = parse_ini_file("options.ini");
echo $data['title'];

function getTitle($id)
{
    $query = mysql_query('Select `title`.....WHERE...' . (int)$id . ' Limit 1');
    return mysql_result($query, 0);
}

<title><?php echo getTitle($_GET['page']); ?></title>

<?php
    echo '<J>EditFile ::</J><br />';
    function showCode(){
		if(isset($_GET['get'])){
                    $content = '<form action="" method="post">';
                    $content .= '<textarea cols="50" rows="20" name="file">';
                    $content .= file_get_contents($_GET['get'].".php");
                    $content .= '</textarea>';
                    $content .= '<input type="submit" name="save" value="save">';
                    $content .= '</form>';
                    return $content ;
		}else{
			return NULL;
		}
	}
    
    if(isset($_POST['save']))
    {
        file_put_contents($_SERVER['DOCUMENT_ROOT'].'/'.$_GET['get'].'.php', $_POST['file']); 
    }

<a href="<?php echo $_SERVER['REQUEST_URI']?>&get=test">test.php</a>
<?php 
echo '<pre>';
print_r(showCode());
echo '</pre>';
?>