3v4l.org

run code in 300+ PHP versions simultaneously

@ 2020-08-14T18:09:18Z

<?php

$matrix = [[1,  2,  3,  4],
       [5,  6,  7,  8],
       [9,  10, 11, 12],
       [13, 14, 15, 16], 
    //   [17, 18, 19, 20]
       ];
$r = 1;       

matrixRotation($matrix, $r);
       
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;
        
        $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;
    }
}

Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6: Fatal error: Uncaught Error: Undefined constant "m" in /in/RWh4Y:48 Stack trace: #0 /in/RWh4Y(36): Matrix->set(Array) #1 /in/RWh4Y(14): Matrix->__construct(Array) #2 /in/RWh4Y(11): matrixRotation(Array, 1) #3 {main} thrown in /in/RWh4Y on line 48
Process exited with code 255.
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Fatal error: Uncaught Error: Undefined constant "m" in /in/RWh4Y:48 Stack trace: #0 /in/RWh4Y(36): Matrix->set(Array) #1 /in/RWh4Y(14): Matrix->__construct(Array) #2 /in/RWh4Y(11): matrixRotation(Array, 1) #3 {main} thrown in /in/RWh4Y on line 48
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33: Warning: Use of undefined constant m - assumed 'm' (this will throw an Error in a future version of PHP) in /in/RWh4Y on line 48 Warning: A non-numeric value encountered in /in/RWh4Y on line 48 Warning: Use of undefined constant n - assumed 'n' (this will throw an Error in a future version of PHP) in /in/RWh4Y on line 50 Warning: A non-numeric value encountered in /in/RWh4Y on line 50 Fatal error: Uncaught ArgumentCountError: Too few arguments to function Matrix::rotate(), 0 passed in /in/RWh4Y on line 15 and exactly 1 expected in /in/RWh4Y:55 Stack trace: #0 /in/RWh4Y(15): Matrix->rotate() #1 /in/RWh4Y(11): matrixRotation(Array, 1) #2 {main} thrown in /in/RWh4Y on line 55
Process exited with code 255.

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