PHP实现顺时针打印矩阵(螺旋矩阵)的方法示例

<?phpfunction printMatrix($matrix){ $row = count($matrix); $col = count($matrix[0]); if($row == 0 || $col == 0)  return $matrix; $result = array(); $left = 0;$right = $col-1; $top = 0;$bottom = $row-1; while($left<=$right && $top<= $bottom){  for($i =$left;$i<=$right;++$i){   array_push($result, $matrix[$top][$i]);  }  for($i =$top+1;$i<=$bottom;++$i)   array_push($result, $matrix[$i][$right]);  if($top!=$bottom){   for($i = $right-1;$i>=$left;--$i)    array_push($result, $matrix[$bottom][$i]);  }  if($left!=$right){   for($i = $bottom-1;$i>$top;--$i)    array_push($result, $matrix[$i][$left]);  }  $left++;$right--;$top++;$bottom--; } return $result;}