<?php
// $a = array( 'kaushik', 'kaushik is', 'kaushik is great', 'is', 'is great', 'great' );
$a = array('usb', 'pc', 'cam 168', 'cam', '168', 'cam 168');
$a = array_unique($a);
$s = count($a);
$p = array();
foreach ($a as $key => $b)
{
$x = 0;
for ($i = 0; $i < $s; $i++)
{
if ($key == $i) continue;
$c = $a; unset($c[$key]);
if (strpos($c[$i], $b) === false) $x++;
if ($x == $s - 1) array_push($p, $key);
}
}
foreach ($p as $o => $value) {
echo $a[$value]. ' ';
}
?>
preferences:
42.15 ms | 402 KiB | 5 Q