temp array array array array array temp_out array array array array ar

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$temp = array(1 => array(), 2 => array(), 3 => array(), 4 => array());
$temp_out = array(1 => array(), 2 => array(), 3 => array(), 4 => array());
$num = array(1 => 0, 2 => 0, 3 => 0, 4 => 0);
$x = 0;
while ($x < 4) {
$y = 0;
while ($y < 4) {
$var = $numbers[$x + 4*$y];
if ($var != 0) {
$temp[$x + 1][] = $var;
$num[$x + 1]++;
}
$y++;
}
if ($num[$x + 1] > 0) {
$b1 = $temp[$x + 1][0];
if ($num[$x + 1] > 1) {
$b2 = $temp[$x + 1][1];
if ($num[$x + 1] > 2) {
$b3 = $temp[$x + 1][2];
if ($num[$x + 1] > 3)
$b4 = $temp[$x + 1][3];
else
$b4 = 0;
}
else
$b3 = $b4 = 0;
}
else
$b2 = $b3 = $b4 = 0;
}
else
$b1 = $b2 = $b3 = $b4 = 0;
if ($b1 == $b2) {
$b1 = $b1 + $b2;
if ($b3 == $b4) {
$b2 = $b3 + $b4;
$b3 = 0;
}
else {
$b2 = $b3;
$b3 = $b4;
}
$b4 = 0;
}
elseif ($b2 == $b3) {
$b2 = $b2 + $b3;
$b3 = $b4;
$b4 = 0;
}
elseif ($b3 == $b4) {
$b3 = $b3 + $b4;
$b4 = 0;
}
$temp_out[$x + 1][0] = $b1;
$temp_out[$x + 1][1] = $b2;
$temp_out[$x + 1][2] = $b3;
$temp_out[$x + 1][3] = $b4;
$x++;
}