Online PHP editor | output for SCuj4

<?php $matrix = [[1, 2, 3, 4], [5, 6, 7, 8], [9, 10, 11, 12], [13, 14, 15, 16], // [17, 18, 19, 20] ]; $r = 1; function matrixRotation($matrix, $r) { $m = new Matrix($matrix); $m->rotate(); print_r($m->get()); } class Matrix { private $mx; private $m; private $n; private $a; // i [a,b] private $b; private $c; // j [c,d] private $d; public function get() { return $this->mx; } public function __construct($mx) { try { $this->set($mx); } catch(\Exception $e) { echo $e->getMessage(); // exit(1); } } private function set(array $mx) { $this->m = count($mx); $this->n = count($mx[0]); $this->a = 0; $this->b = m-1; $this->c = 0; $this->d = n-1; $bCtr = ($this->b)/2; $dCtr = ($this->d)/2;; $this->mx = $mx; } public function rotate($r) { $k = 0; while(1) { $this->a += $k; $this->b -= $k; $this->c += $k; $this->d -= $k; if ( $this->a === $this->b || $this->c === $this->d ) { break; } $mult = 2*($this->m-2*$k)+2*($this->n-2*$k)-4; $rm = $r % $mult; while($rm--) { rotateSquare(); } ++$k; } } private function rotateSquare($k) { $t = []; //transite for($i=0; $i<$this->m; ++$i) { for($j=0; $j<$this->n; ++$j) { $t[$i][$j] = [0,0]; } } $j=$this->c; for($i=$this->a; $i<$this->b; ++$i) { $t[$i][$j] = [-1,0]; } $i=$this->b; for($j=$this->c; $j<$this->d; ++$j) { $t[$i][$j] = [0,1]; } $j=$this->d; for($i=$this->b; $i>$this->a; --$i) { $t[$i][$j] = [1,0]; } $i=$this->a; for($j=$this->d; $j<$this->c; --$j) { $t[$i][$j] = [0,-1]; } $temp = []; for($i=0; $i<$this->m; ++$i) { for($j=0; $j<$this->n; ++$j) { $temp[$i + $t[$i][$j][0] ] [$j + $t[$i][$j][1] ] = $this->mx[$i][$j]; } } $this->mx = $this->ksort($temp); return $this; } private function ksort($temp) { foreach($temp as &$ar){ ksort($ar); } ksort($temp); return $temp; } }