So, basically, I've been writing this Game of Life PHP script. My output is wack and I can't figure it out!
The whole scheme consists of a 2-dimensional array called $world in which each value corresponds to a 2-state cell that can be 1 or 0(alive or dead). Each cell has 8 neighbors.
The rules to compute the next state of the system are as follows:

1. If you have 2-3 live neighbors(1's), you're alive the next turn.
2. Otherwise you're dead.

My implementation is as follows:
(note: `$j_minus`, `$i_plus`, etc refers to `$j-1`, etc but takes the edges into account) 

```
for($i=0;$i<$size;$i++)
{ 
    for($j=0;$j<$size;$j++) 
    {

            if( ($world[$j_minus][$i] + $world[$j_plus][$i] + $world[$j][$i_minus] + $world[$j][$i_plus]+$world[$j_minus][$i_minus]+$world[$j_minus][$i_plus]+$world[$j_plus][$i_minus]+$world[$j_plus][$i_plus]) > 3 )
            {
                $new_world[$j][$i]=0;

            }

            else if( ($world[$j_minus][$i] + $world[$j_plus][$i] + $world[$j][$i_minus] + $world[$j][$i_plus]+$world[$j_minus][$i_minus]+$world[$j_minus][$i_plus]+$world[$j_plus][$i_minus]+$world[$j_plus][$i_plus])>= 2 )
            {
                $new_world[$j][$i]=1;

            }
            else {$new_world[$j][$i]=0;}
        }

}

```

After these rules have been applied, making $new\_world the new state of the system, I go to print the array to the screen with this:

```
for($i=0;$i<$size;$i++)
{ 
    for($j=0;$j<$size;$j++) 
    {

        echo $new_world[$i][$j]." ";
    }
        echo "</p>";
}

```

What I get, regardless of the initial state of `$world`, is either a completely stagnant state full of lines and big blocks or an oscillation between 2-3 such states. The rules don't seem to be applying correctly!