Tez,
<?php
$s = "new\n\line\r\nanother line";
echo $s;
echo "\n------------------\n";
$s = preg_replace('~\s~', '', $s);
echo $s;Результат:
new
\line
another line
------------------
new\lineanotherline
Tez,
<?php
$s = "new\n\line\r\nanother line";
echo $s;
echo "\n------------------\n";
$s = preg_replace('~\s~', '', $s);
echo $s;