Determine whether the version number is continuous in PHP

Preface

Doing it excel Data import into database tables requires validation excel Is the version number in the column of version number in continuous .
Version number format ：1,1.1,1.2,1.2.1,2,2.1,2.2,2.2.1（ correct ）
Version number format ：1,1.1,1.1,1.2.1,2,2.1,2.2,2.2.1（ error ）
Version number format ：1,1.2,1.1,1.2.1,2,2.2,2.1,2.1.1（ error ）

I need to use php String functions in ,strpos,strrpos,substr.

    /** *  Judge whether the number is continuous , Number format ：1,1.1,1.2,1.2.1,2,2.1,2.2,2.2.1 * @param $data * @param string $mark * @return void */
    function judge_code_continuity($data, $errData = [], $mark = '.')
    {
    
        foreach ($data as $key => $val) {
    
            if (!empty($val)) {
    
                // Determine whether there are duplicate numbers 
                if (in_array($val, array_slice($data, 0, $key))) {
    
                    $errData[] = " Number " . $key . " Repetition exists , Please check and upload again ";
                    break;
                }
                if ($key == 0) {
    
                } else if (!strpos($val, $mark)) {
    
                    if (!in_array($val - 1, array_slice($data, 0, $key))) {
    
                        $errData[] = $val . " There is a sequence error in the number , Please check and upload again ";
                        break;
                    }
                } else {
    
                    $position = strrpos($val, $mark, 0);
                    $temp = substr($val, $position + 1, strlen($val) - $position) - 1;
                    $profit = substr($val, 0, $position);
                    $pointPosition = strrpos($profit, $mark, 0);
                    $pointBefore = substr($profit, 0, $pointPosition);
                    $pointAfter = substr($profit, -1, $pointPosition);
                    if ($temp == 0) {
    
                        if (!in_array(substr($val, 0, $position), array_slice($data, 0, $key))) {
    
                            $errData[] = $val . " There is a sequence error in the number , Please check and upload again ";
                            break;
                        }
                    } else {
    
                        if (!in_array(substr($val, 0, $position) . "." . ($temp), array_slice($data, 0, $key))) {
    
                            $errData[] = $val . " There is a sequence error in the number , Please check and upload again ";
                            break;
                        }
                    }
                    if ($pointBefore && in_array($pointBefore . "." . ($pointAfter + 1), array_slice($data, 0, $key))) {
    
                        $errData[] = $val . " There is a sequence error in the number , Please check and upload again ";
                    }
                }
            } else {
    
                continue;
            }

        }
        return $errData;
    }

Here, a series of incorrect version numbers will be returned with error messages .