K-th Largest Number From 2 Sorted Arrays

kthlargestfrom2arrays.php

<?php

// 2 Arrays $a[m] and $b[n] 

$i = 0;
$j = 0;
$p = 0;
$k = 2;

for($p = 1; $p < $k; $p++)
{
    if( $a[$i] < $b[$j] )
    {
        $i = $i + 1;
    }
    else
    {
        $j = $j + 1;
    }
}

if( $a[$i] < $b[$j] )
{
    return $a[$i];
}
else
{
    return $b[$j];
}

?>