<?php
$output = shell_exec ("last | head -10 | grep -ve reboot");
$by_line_res = preg_split(("/\\n/"), $output);

for($i = 0; $i < 5; $i++) {
	preg_match("/ \d+:\d+/ ", $by_line_res[$i], $match);
	echo $match[0];
	echo " - ";
	preg_match("/\w+ /", $by_line_res[$i], $match);
	echo $match[0];
	echo " - ";
	echo "\n";
}
?>