[PHP] pobierz, plaintext 
$text ='
Lorem ipsum dolor sit amet, consectetur
adipiscing elit. Fusce pulvinar sodales purus
quis condimentum. Cras vitae ornare lectus.
Vivamus eros dui, fermentum eu ultricies non,
fringilla quis felis.
 
Lorem ipsum dolor sit amet, consectetur
adipiscing elit. Fusce pulvinar sodales purus
quis condimentum. Cras vitae ornare lectus.
Vivamus eros dui, fermentum eu ultricies non,
fringilla quis felis. ';
 
$text_new = preg_replace_callback(
	'#\n(.*)\n#',
	function($matches){
 
		return '<tag>'.$matches[1].'</tag>';
}, $text);
[PHP] pobierz, plaintext 

[PHP] pobierz, plaintext 
$text="<tag>".str_replace("\r\n","</tag><tag>",$text)."</tag>";
[PHP] pobierz, plaintext 

[PHP] pobierz, plaintext 
$text=str_replace("<tag></tag>","","<tag>".str_replace("\r\n","</tag><tag>",$text)."</tag>"));
[PHP] pobierz, plaintext 

[PHP] pobierz, plaintext 
$text = preg_replace('#^.+$#m', '<tag>\0</tag>', $text);
[PHP] pobierz, plaintext 

[PHP] pobierz, plaintext 
$text = preg_replace('#^.*$#m', '<tag>\0</tag>', $text);
[PHP] pobierz, plaintext 

[HTML] pobierz, plaintext 
<form action="skr.php" method="post">
 <textarea name="formularz" rows="25" cols="100">
    Miejsce tekst
  </textarea>
<input type="submit" value="Wyślij" name="submit"/>
</form>
[HTML] pobierz, plaintext 

[PHP] pobierz, plaintext 
<?php
$text = $_POST['formularz'];
$text = preg_replace('#^.*$#m', '<tag>\0</tag>', $text);
echo $text;
?>
[PHP] pobierz, plaintext