<?php
$a = id;
$a = .content;
?><textarea class="content"></textarea><textarea>
\
<form method="post" action="getcont.php">
<textarea name="content"></textarea>
<input type="submit">
</form><?php
echo $_POST["content"]
?>
var a = $('textarea').val();var a = document.getElementsByTagName('textarea')[0].value;
<?php
$text = 'Hello im variable!';
?>
<html>
<title><?=$text?></title>
</html><?php
$a = 'id'
$b = 'content'
echo '<textarea id="'.$a.'" class="'.$b.'"></textarea>'
?>
Простой
