脚本执行后如何保存用户在表单页面输入的数据？

Question

我可以知道是否可以保存用户之前输入的表单中的数据？

这是表单文件：

    <!DOCTYPE html>
    <html>
    <head>
        <meta http-equiv="content-type" content="text/html" />        
        <title>Data</title>
        <style type="text/css">
        input {
            background-color: #999;
            border-style: solid;
            border-color: #999;
            border: 0px 4px 0px 4px;
            padding: 3px 6px 3px 6px;
            margin: 10px 0;
        }
        input:focus {
            border-style: solid;
            border-color: black;
        }
        </style>
    </head>

    <body>

    <form action="count.php" method="post" action="post">
    Name: <input type="text" name="customername" /><br />
    DOB: <input type="text" name="date" /> <input type="text" name="month" /> <input type="text" name="year" /><br />
    First Row: <input type="text" name="rowone" /><br />
    Second Row: <input type="text" name="rowtwo" /><br />
    Third Row: <input type="text" name="rowthree" /><br />
    <input type="submit" value="Go" />
    </form>

    </body>
    </html>

这里是执行用户输入的表单数据的php。

 <?php
    $cname = $_POST['customername'];
    $dob_date = $_POST['date'];
    $dob_month = $_POST['month'];
    $dob_year = $_POST['year'];
    $year = gmdate("Y");
    $month = gmdate("m");
    $day = gmdate("d");
    $age = $year - $dob_year; // $age calculates the user's age determined by only the year
    if ($month < $dob_month) { // this checks if the current month is before the user's month of birth
        $age = $age - 1;
    } else if (
            $month == $dob_month && $day >= $dob_date) { // this checks if the current month is the same as the user's month of birth and then checks if it is the user's birthday or if it is after it
        $age = $age;
    } else if ($month == $dob_month && $day < $dob_date) { //this checks if the current month is the user's month of birth and checks if it before the user's birthday
        $age = $age - 1;
    }

    //add all initial data into an matrix variable for easier access to them later
    //To access rowone use $rows[0][0], rowtwo $rows[1][0] ect.
    //The matrix is an array which contains multiple array. eg. 2-dimensional arrays
    //To get all the variables with $r1X simply retrieve the first array of the matrix eg $rows[0]
    $rows = array(array($_POST['rowone']), array($_POST['rowtwo']), array($_POST['rowthree']), array());

    //Similarities between row1 and row2 made me incoporate modulo value as an argument.
    function incmod($a, $m) {
        return ($a % $m) + 1;
    }

    //Population each row, with $populationCount number of elements, where each element is added with incmod(X, $mod)
    function populateRow($rowId, $populationCount, $mod) {
        //The global keyword is needed in order for the function to access the global variable.
        global $rows;
        $row = $rows[$rowId];
        while (sizeof($row) < $populationCount) {
            $rowInd = sizeof($row) - 1;
            $m = incmod($row[$rowInd], $mod);
            array_push($row, $m);
        }

        //Due to how php works with variables and references we need to set the row back into the global variable.
        $rows[$rowId] = $row;
    }

    //This function makes sure that the values allways are between 1 and 12.
    function bindToRange($v) {
        if ($v == 0)
            return 1;
        return ($v - 1) % 12 + 1;
    }

    //Population the first three rows
    populateRow(0, 7, 7);
    populateRow(1, 12, 12);
    populateRow(2, 12, 12);

    //Creating the forth row by nested forloops.
    //The first loop iterates over the entries in a row (in your example this would be the letters e.g r1a r1b ect)
    //The second (inner) loop iterates of the rows (in you example this would be the number you had in your variables.)
    //The sum over each of the three rows are added, then bound to 1-12 range, before being added to the forth row.
    for ($cId = 0; $cId < 7; $cId++) {
        $sum = 0;
        for ($rId = 0; $rId < 3; $rId++) {
            $sum += $rows[$rId][$cId];
        }
        array_push($rows[3], bindToRange($sum));
    }

    //Same as above, but for the last two remaining values. Should give a total of nine entries in the forth row.
    for ($cId = 7; $cId < 12; $cId++) {
        $sum = 0;
        for ($rId = 1; $rId < 3; $rId++) {
            $sum += $rows[$rId][$cId];
        }
        array_push($rows[3], bindToRange($sum));
    }

    function lower_than_2($var){
        return ($var > 1);
    }
    $cssClassName = "match";

    // array_count_values will count how many times each value is in the array
    $cssBase = array_count_values($rows[3]);
    // remove from array values that are lower than 2
    $cssBase = array_filter($cssBase, "lower_than_2");

    $cssNumber = array();
    $cssCounter = 1;
    // make $cssNumber be a mirror of $cssBase (same keys), but with serial values
    foreach ($cssBase as $key => $value) {
        $cssNumber[$key] = $cssCounter;
        $cssCounter++;
    }
    unset($cssCounter);
    // ------------------------------------------------

    ?>
    <!DOCTYPE HTML>
    <html>
        <head>
            <meta http-equiv="content-type" content="text/html" />
            <title>Result</title>
            <link rel="stylesheet" type="text/css" href="./css/style.css" />
        </head>

        <body>
            Customer Name: <?php echo $cname; ?><br />
            DOB: <?php echo $dob_date; ?> / <?php echo $dob_month; ?> / <?php echo $dob_year; ?><br />
            <b><?php echo $age; ?></b> Years Old
            <table>
                <?php
                //Instead of listing up (hard-coded) I've used nested forloops to generate the html.
                //The loops are similar to the ones above, but use sizeof keyword to figure out how many iterations it needs.

                $lines = sizeof($rows)+1; // $rows have 4 rows, we will need 1 more
                for ($rId = 0; $rId < $lines; $rId++) {
                    echo "<tr>
";

                    if($rId < 3){
                        $row = $rows[$rId];
                        $rowSize = sizeof($row);

                        for ($cId = 0; $cId < $rowSize; $cId++) {
                            echo "<td>" . $row[$cId] . "</td>
";
                        }
                    } else if($rId == 3){
                        $row = $rows[$rId];
                        $rowSize = sizeof($row);

                        for ($cId = 0; $cId < $rowSize; $cId++) {
                            echo "<td"; // open td
                            // if the value is in cssBase array, we will apply a css class
                            if(array_key_exists($row[$cId], $cssBase))
                                echo ' class="'. $cssClassName . $cssNumber[$row[$cId]] .'"';
                            echo ">"; // close td
                            echo $row[$cId];
                            echo "</td>
";
                        }
                    } else if($rId == 4){
                        for ($cId = 0; $cId < 12; $cId++) {
                            if($cId == (($age-1)%12)){
                                echo '<td>'. "$age Years Old" .'</td>'."
";
                            } else {
                                echo "<td></td>
";
                            }
                        }
                    }
                    echo "</tr>
";
                }

    // ------------------------------------------------

                ?>
            </table><br /><br />
            <a href="./" target="_blank" title="Calculate Again">Calculate Again</a>

        </body>
    </html>

是否可以在count.php页面上添加一个保存按钮，该值将是表单页面中较早的用户键。保存按钮将回显“数据已保存”，或者如果存在，它将在同一页面上回显“已存在的数据”。如果是，我需要使用的方法是什么？我是全新的，因为我搜索谷歌，我无法找到我需要的答案。我已经在mysql中创建表来存储数据。

我想要存储的数据是出生日期，rowone，rowtwo和第三行。在mysql中创建表，dob为date，rowone，rowtwo和rowthree为varchar（255），id为int（11）。

这是我的insertdata.php

  <?php

    $dbhost = "localhost";

    $dbuser = "root";

    $dbpass = "";

    $dbname = "mama";

    class dob {
        public function set_dob($dob_date, $dob_month, $dob_year) {
            $this->dob = $dob_date.'/'.$dob_month.'/'.$dob_year;
        }
    }

    $con=mysqli_connect($dbhost,$dbuser,$dbpass,$dbname);
    $sql="INSERT INTO profile (dob,rowone,rowtwo,rowthree) VALUES ('$_POST[dob]','$_POST[rowone]','$_POST[rowtwo]','$_POST[rowthree]')";

    if (!mysqli_query($con,$sql))
      {
      die('Error: ' . mysqli_error($con));
      }
    echo "1 record added";

    /* close connection */
    $mysqli->close();
    ?>

它显示如下错误：注意：未定义的索引：第18行的C： xampp htdocs mama inc insertdata.php中的dob

注意：未定义的索引：第18行的C： xampp htdocs mama inc insertdata.php中的rowone

注意：未定义的索引：第18行的C： xampp htdocs mama inc insertdata.php中的rowtwo

注意：未定义的索引：第18行的C： xampp htdocs mama inc insertdata.php中的rowthree 1添加了记录注意：未定义的变量：C： xampp htdocs mama inc insertdata.php中的mysqli在线27

致命错误：在第27行的C： xampp htdocs mama inc insertdata.php中的非对象上调用成员函数close（）

Answer 1

另一答案

Answer 2

另一答案

Answer 3

另一答案