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; $rId++) {
echo "<tr>\n";
if($rId < 3){
$row = $rows[$rId];
$rowSize = sizeof($row);
for ($cId = 0; $cId < $rowSize; $cId++) {
echo "<td>" . $row[$cId] . "</td>\n";
}
} 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>\n";
}
} else if($rId == 4){
for ($cId = 0; $cId < 12; $cId++) {
if($cId == (($age-1)%12)){
echo '<td>'. "$age Years Old" .'</td>'."\n";
} else {
echo "<td></td>\n";
}
}
}
echo "</tr>\n";
}
// ------------------------------------------------
?>
</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，该值将是用户在表单页面中键入的值。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 添加了1条记录 注意：未定义的变量：第27行的C：\ xampp \ htdocs \ mama \ inc \ insertdata.php中的mysqli
致命错误：在第27行的C：\ xampp \ htdocs \ mama \ inc \ insertdata.php中调用非对象的成员函数close（）
答案 0 :(得分：0)
要存储从您的视图页面发送的数据，我认为您需要先在您的count.php中建立应用程序与数据库MySQL之间的连接，然后创建一个存储数据的方法。
您可能希望看到此链接：
http://www.w3schools.com/php/php_mysql_insert.asp
希望有所帮助
答案 1 :(得分：0)
有很多方法可以做到这一点...使用可以使用AJAX调用进行验证的客户端库（jQuery，AngularJS，DOJO等），或者如果你想在php中使用普通的html，你可以使用类似的东西：
<form action="count.php" method="post" action="post">
Name: <input type="text" name="customername" value="<?php echo $prevCName; ?>" /><br />
DOB: <input type="text" name="date" value="<?php echo $prevDate; ?>" /> <input type="text" name="month" value="<?php echo $prevMonth; ?>" /> <input type="text" name="year" value="<?php echo $prevYear; ?>" /><br />
First Row: <input type="text" name="rowone" value="<?php echo $prevROne; ?>" /><br />
Second Row: <input type="text" name="rowtwo" value="<?php echo $prevRTwo; ?>" /><br />
Third Row: <input type="text" name="rowthree" value="<?php echo $prevRThree; ?>" /><br />
<input type="submit" value="Go" />
</form>
这个表单文件必须是一个php文件，你应该确保保存以前的值...要么在$ _SESSION中保存，要么在前一个文件中使用包含...要求...等等。
答案 2 :(得分：0)
最后，您只想执行以下操作：
$con=mysqli_connect($host,$user,$password,$db);
$sql = "INSERT INTO tablename (dob,rowone,rowtwo,rowthree)
VALUES (".$_POST['customername'].",".$_POST['date'].",".$_POST['month'].",".$_POST['year'].");"
mysqli_query($con,$sql);
我在我的例子中使用了mysqli。当然，方法更好的方法是PDO：http://tw1.php.net/manual/en/book.pdo.php
最终你会想要安全性，所以你将使用准备好的陈述：http://php.net/manual/en/pdo.prepared-statements.php
答案 3 :(得分：0)
也许你可以通过使用find（＆＃39; first＆＃39;）或找到（＆＃39; all＆＃39;）来获得你想要的东西。
$ex = $this->find('first' , array(
'condition' => array ('model_name.id' => 22 //specific id
)));
您可以从具有特定位置（id）的表/表中获取任何值。 为了更清楚，例如：第i行的第j列元素。
答案 4 :(得分：0)
查看错误堆栈跟踪，您的 php 代码中有 2 个错误：
我会这样做：
try {
// Create connection
$conn = new mysqli($dbhost, $dbuser, $dbpass, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
$insertSQL = "INSERT INTO profile (dob, rowone, rowtwo, rowthree) VALUES (?, ?, ?, ?)";
$stmt = $conn->prepare($insertSql);
$stmt->bind_param("ssss", $_POST[dob], $_POST[rowone], $_POST[rowtwo], $_POST[rowthree]); // the four "s" are used to indicate the 4 strings to be set in the parametric query
if ($stmt->execute() === false) {
$errMsg = "";
foreach (mysqli_errors() as $error) {
$errMsg.= "SQLSTATE: ".$error[ 'SQLSTATE']." - ";
$errMsg.= "code: ".$error[ 'code']." - ";
$errMsg.= "message: ".$error[ 'message']."\n";
}
throw new Exception($errMsg);
}
} catch (Exception $e) {
error_log("Error during saving record: ".$e->getMessage());
} finally {
$stmt->close();
}