如何在fpdf中传递会话数据
how to pass session data in fpdf
我正在制作一个 Elearning 网页，网站管理员可以在其中根据用户数据生成报告。我想根据管理员想要报告的内容生成报告。我试过将会话数据传递给 fpdf，就像将会话数据传递给另一个页面一样，但它不起作用。
有必要给我示例代码吗？如果是，我将编辑我的问题并将我的代码放入其中。
对不起我的英语，我希望你能理解我。
我动态生成我的报告，所以我在我的 SELECT 语句中的 WHERE 子句中使用该会话数据。
<?php
require('../fpdf/fpdf.php');
require('includes/dbh.inc.php');
session_start();
class myPDF extends FPDF {
function header() {
$this->Image('../images/logo(dbs).png',10,6);
$this->SetFont('Arial','B',14);
$this->Cell(276,5,'User Report',0,0,'C');
$this->Ln();
$this->SetFont('Times', '',12);
$this->Cell(276,10,'WAREHOUSE DEPARTMENT',0,0,'C');
$this->Ln(20);
}
function footer() {
$this->SetY(-15);
$this->SetFont('Arial','',8);
$this->Cell(0,10,'Page '.$this->PageNo().'/{nb}',0,0,'C');
}
function headertable() {
$this->SetFont('Times','B',12);
$this->Cell(40,20,'WH#1 Finished',0,1,'C');
$this->Cell(34,10,'Firstname',1,0,'C');
$this->Cell(34,10,'Lastname',1,0,'C');
$this->Cell(65,10,'Lesson Title',1,0,'C');
$this->Cell(25,10,'Status',1,0,'C');
$this->Cell(40,10,'Finished',1,0,'C');
$this->Ln();
}
function headertable1() {
$this->SetFont('Times','B',12);
$this->Cell(40,20,'WH#1 Unfinished',0,1,'C');
$this->Cell(34,10,'Firstname',1,0,'C');
$this->Cell(34,10,'Lastname',1,0,'C');
$this->Cell(65,10,'Lesson Title',1,0,'C');
$this->Cell(25,10,'Status',1,0,'C');
$this->Cell(40,10,'Finished',1,0,'C');
$this->Ln();
}
function viewTable($conn) {
$this->SetFont('Times', '',12);
$stmt = $conn->query('SELECT DISTINCT firstname, lastname, lessontitle, status, finished FROM report
WHERE lessontitle!="no lesson taken yet" AND user_type="user" AND whID="1" AND acnt_stats="active"
ORDER BY lessontitle DESC');
while($data = $stmt->fetch_object()) {
$this->Cell(34,10,$data->firstname,1,0,'L');
$this->Cell(34,10,$data->lastname,1,0,'L');
$this->Cell(65,10,$data->lessontitle,1,0,'L');
$this->Cell(25,10,$data->status,1,0,'L');
$this->Cell(40,10,$data->finished,1,0,'L');
$this->Ln();
}
}
function viewTable1($conn) {
$this->SetFont('Times', '',12);
$stmt = $conn->query('SELECT DISTINCT firstname, lastname, lessontitle, status, finished FROM report
WHERE lessontitle="no lesson taken yet" AND user_type="user" AND whID="1" AND acnt_stats="active"
ORDER BY lessontitle DESC');
while($data = $stmt->fetch_object()) {
$this->Cell(34,10,$data->firstname,1,0,'L');
$this->Cell(34,10,$data->lastname,1,0,'L');
$this->Cell(65,10,$data->lessontitle,1,0,'L');
$this->Cell(25,10,$data->status,1,0,'L');
$this->Cell(40,10,$data->finished,1,0,'L');
$this->Ln();
}
}
}
$pdf = new myPDF();
$pdf->AliasNbPages();
$pdf->AddPage('P','Letter',0);
$pdf->headertable();
$pdf->viewTable($conn);
$pdf->AddPage('P','Letter',0);
$pdf->headertable1();
$pdf->viewTable1($conn);
$pdf->Output();
这是我要获取会话数据的地方：
if (!isset($submit)) {
echo 'failed to update!';
} else {
// for insert statement
$acnt_status = $_SESSION['acnt_status'];
$wh = $_SESSION["whID"];
$user_type = $_SESSION['user']['user_type'];
//update report data from database.
$user = $_SESSION['user']['firstname'];
$lname = $_SESSION['user']['lastname'];
$dept = $_GET['dept'];
$ica = $_SESSION['status2'];
$lID = $_SESSION['title'];
$stmt = mysqli_stmt_init($conn);
$result = $conn->query("SELECT * FROM report
WHERE lessontitle = '$lID' AND status='registered' AND lastname='$lname' AND firstname='$user'");
//check of there existing data in the database
if ($result && mysqli_num_rows($result) > 0) {
//if yes, update the data in database
$query = "UPDATE report SET lessontitle='$lID', status='$ica', finished=NOW()
WHERE lastname='$lname' AND firstname='$user' AND status='registered'";
$result = mysqli_query($conn, $query);// use for executing multiple query a single query statement.
echo'yes';
} else {
//check again if there's already data in database
$result = $conn->query("SELECT * FROM report
WHERE lessontitle = '$lID'
AND lastname='$lname' AND firstname='$user'");
//check of there existing data in the database
if ($result && mysqli_num_rows($result) > 0) {
echo'there is';
} else {
//if no, insert new data in database
mysqli_stmt_execute($stmt);
$result = mysqli_stmt_get_result($stmt);
$sql = "INSERT INTO report (firstname, lastname, lessontitle, status, department, acnt_stats, whID, user_type, finished) VALUES (?,?,?,?,?,?,?,?,NOW())";
if (!mysqli_stmt_prepare($stmt, $sql)) {
echo "SQL statement failed";
} else {
mysqli_stmt_bind_param($stmt, "ssssssis", $user, $lname, $lID, $ica, $dept, $acnt_status, $wh, $user_type);
mysqli_stmt_execute($stmt);
echo 'no';
}
}
}
}
这是管理员生成报告的页面：
<div class="listbody">
<div class="list" style="font-size:1.5vw;">
<?php
if (!count($reportOpex)) {
echo 'no record';
} else {
?>
<table>
<thead>
<tr>
<th colspan="5" style=" background-color: #EF3842;" class="uReport">User Report</th>
<tr>
<th>Firstname</th>
<th>LastName</th>
<th>Lesson Title</th>
<th>Status</th>
<th>Date&Time finished</th>
</tr>
</thead>
<tbody>
<form action="GenReport.php" method="post">
<?php
foreach($reportOpex as $r) {
?>
<tr>
<td><?php echo escape($r->firstname)?></td>
<td><?php echo escape($r->lastname); ?></td>
<td><?php echo escape($r->lessontitle); ?></td>
<td><?php echo escape($r->status); ?></td>
<td><?php echo escape($r->finished); ?></td>
</tr>
<?php
}
?>
</tbody>
<tr>
<th colspan="5" style=" background-color: #6495ED"><button class="gReport"><b>Generate Report ►</b></button></th>
</tr>
</form>
</table>
<?php
}
?>
不过我只想获取 whID，因此我可以将它用于 SELECT 语句中的 WHERE 子句。谢谢！
我已经解决了我的问题。我将会话数据放在 require('../fpdf/fpdf.php'); 之前我搜索过 fpdf 不想在 require('../fpdf/fpdf.php'); 之间有一个变量，直到 fpdf 代码结束。
这是我解决问题的方法：
<?php
session_start();
$_SESSION['warehouseID'] = $_POST['warehouseID'];
require('../fpdf/fpdf.php');
require('includes/dbh.inc.php');
class myPDF extends FPDF {
function header() {
$this->Image('../images/logo(dbs).png',10,6);
$this->SetFont('Arial','B',14);
$this->Cell(276,5,'User Report',0,0,'C');
$this->Ln();
$this->SetFont('Times', '',12);
$this->Cell(276,10,'WAREHOUSE DEPARTMENT',0,0,'C');
$this->Ln(20);
}
function footer() {
$this->SetY(-15);
$this->SetFont('Arial','',8);
$this->Cell(0,10,'Page '.$this->PageNo().'/{nb}',0,0,'C');
}
function headertable() {
$this->SetFont('Times','B',12);
$this->Cell(40,20,'WH#1 Finished',0,1,'C');
$this->Cell(34,10,'Firstname',1,0,'C');
$this->Cell(34,10,'Lastname',1,0,'C');
$this->Cell(65,10,'Lesson Title',1,0,'C');
$this->Cell(25,10,'Status',1,0,'C');
$this->Cell(40,10,'Finished',1,0,'C');
$this->Ln();
}
function headertable1() {
$this->SetFont('Times','B',12);
$this->Cell(40,20,'WH#1 Unfinished',0,1,'C');
$this->Cell(34,10,'Firstname',1,0,'C');
$this->Cell(34,10,'Lastname',1,0,'C');
$this->Cell(65,10,'Lesson Title',1,0,'C');
$this->Cell(25,10,'Status',1,0,'C');
$this->Cell(40,10,'Finished',1,0,'C');
$this->Ln();
}
function viewTable($conn) {
$this->SetFont('Times', '',12);
$stmt = $conn->query("SELECT DISTINCT firstname, lastname, lessontitle, status, finished FROM report
WHERE lessontitle!='no lesson taken yet' AND user_type='user' AND whID='{$_SESSION['warehouseID']}' AND acnt_stats='active'
ORDER BY lessontitle DESC");
while($data = $stmt->fetch_object()) {
$this->Cell(34,10,$data->firstname,1,0,'L');
$this->Cell(34,10,$data->lastname,1,0,'L');
$this->Cell(65,10,$data->lessontitle,1,0,'L');
$this->Cell(25,10,$data->status,1,0,'L');
$this->Cell(40,10,$data->finished,1,0,'L');
$this->Ln();
}
}
function viewTable1($conn) {
$this->SetFont('Times', '',12);
$stmt = $conn->query("SELECT DISTINCT firstname, lastname, lessontitle, status, finished FROM report
WHERE lessontitle='no lesson taken yet' AND user_type='user' AND whID='{$_SESSION['warehouseID']}' AND acnt_stats='active'
ORDER BY lessontitle DESC");
while($data = $stmt->fetch_object()) {
$this->Cell(34,10,$data->firstname,1,0,'L');
$this->Cell(34,10,$data->lastname,1,0,'L');
$this->Cell(65,10,$data->lessontitle,1,0,'L');
$this->Cell(25,10,$data->status,1,0,'L');
$this->Cell(40,10,$data->finished,1,0,'L');
$this->Ln();
}
}
}
$pdf = new myPDF();
$pdf->AliasNbPages();
$pdf->AddPage('P','Letter',0);
$pdf->headertable();
$pdf->viewTable($conn);
$pdf->AddPage('P','Letter',0);
$pdf->headertable1();
$pdf->viewTable1($conn);
$pdf->Output();
正如您在代码顶部看到的那样，有我从上一页获得的会话数据。我在 SELECT 语句中使用 whID='{$_SESSION['warehouseID']}' 以便 fpdf 将从会话中读取变量。我尝试了一切，但这是 fpdf 读取会话变量的唯一方法（在我的例子中）。我希望这对像我这样的初级程序员有所帮助！
我正在制作一个 Elearning 网页，网站管理员可以在其中根据用户数据生成报告。我想根据管理员想要报告的内容生成报告。我试过将会话数据传递给 fpdf，就像将会话数据传递给另一个页面一样，但它不起作用。
有必要给我示例代码吗？如果是，我将编辑我的问题并将我的代码放入其中。
对不起我的英语，我希望你能理解我。
我动态生成我的报告，所以我在我的 SELECT 语句中的 WHERE 子句中使用该会话数据。
<?php
require('../fpdf/fpdf.php');
require('includes/dbh.inc.php');
session_start();
class myPDF extends FPDF {
function header() {
$this->Image('../images/logo(dbs).png',10,6);
$this->SetFont('Arial','B',14);
$this->Cell(276,5,'User Report',0,0,'C');
$this->Ln();
$this->SetFont('Times', '',12);
$this->Cell(276,10,'WAREHOUSE DEPARTMENT',0,0,'C');
$this->Ln(20);
}
function footer() {
$this->SetY(-15);
$this->SetFont('Arial','',8);
$this->Cell(0,10,'Page '.$this->PageNo().'/{nb}',0,0,'C');
}
function headertable() {
$this->SetFont('Times','B',12);
$this->Cell(40,20,'WH#1 Finished',0,1,'C');
$this->Cell(34,10,'Firstname',1,0,'C');
$this->Cell(34,10,'Lastname',1,0,'C');
$this->Cell(65,10,'Lesson Title',1,0,'C');
$this->Cell(25,10,'Status',1,0,'C');
$this->Cell(40,10,'Finished',1,0,'C');
$this->Ln();
}
function headertable1() {
$this->SetFont('Times','B',12);
$this->Cell(40,20,'WH#1 Unfinished',0,1,'C');
$this->Cell(34,10,'Firstname',1,0,'C');
$this->Cell(34,10,'Lastname',1,0,'C');
$this->Cell(65,10,'Lesson Title',1,0,'C');
$this->Cell(25,10,'Status',1,0,'C');
$this->Cell(40,10,'Finished',1,0,'C');
$this->Ln();
}
function viewTable($conn) {
$this->SetFont('Times', '',12);
$stmt = $conn->query('SELECT DISTINCT firstname, lastname, lessontitle, status, finished FROM report
WHERE lessontitle!="no lesson taken yet" AND user_type="user" AND whID="1" AND acnt_stats="active"
ORDER BY lessontitle DESC');
while($data = $stmt->fetch_object()) {
$this->Cell(34,10,$data->firstname,1,0,'L');
$this->Cell(34,10,$data->lastname,1,0,'L');
$this->Cell(65,10,$data->lessontitle,1,0,'L');
$this->Cell(25,10,$data->status,1,0,'L');
$this->Cell(40,10,$data->finished,1,0,'L');
$this->Ln();
}
}
function viewTable1($conn) {
$this->SetFont('Times', '',12);
$stmt = $conn->query('SELECT DISTINCT firstname, lastname, lessontitle, status, finished FROM report
WHERE lessontitle="no lesson taken yet" AND user_type="user" AND whID="1" AND acnt_stats="active"
ORDER BY lessontitle DESC');
while($data = $stmt->fetch_object()) {
$this->Cell(34,10,$data->firstname,1,0,'L');
$this->Cell(34,10,$data->lastname,1,0,'L');
$this->Cell(65,10,$data->lessontitle,1,0,'L');
$this->Cell(25,10,$data->status,1,0,'L');
$this->Cell(40,10,$data->finished,1,0,'L');
$this->Ln();
}
}
}
$pdf = new myPDF();
$pdf->AliasNbPages();
$pdf->AddPage('P','Letter',0);
$pdf->headertable();
$pdf->viewTable($conn);
$pdf->AddPage('P','Letter',0);
$pdf->headertable1();
$pdf->viewTable1($conn);
$pdf->Output();
这是我要获取会话数据的地方：
if (!isset($submit)) {
echo 'failed to update!';
} else {
// for insert statement
$acnt_status = $_SESSION['acnt_status'];
$wh = $_SESSION["whID"];
$user_type = $_SESSION['user']['user_type'];
//update report data from database.
$user = $_SESSION['user']['firstname'];
$lname = $_SESSION['user']['lastname'];
$dept = $_GET['dept'];
$ica = $_SESSION['status2'];
$lID = $_SESSION['title'];
$stmt = mysqli_stmt_init($conn);
$result = $conn->query("SELECT * FROM report
WHERE lessontitle = '$lID' AND status='registered' AND lastname='$lname' AND firstname='$user'");
//check of there existing data in the database
if ($result && mysqli_num_rows($result) > 0) {
//if yes, update the data in database
$query = "UPDATE report SET lessontitle='$lID', status='$ica', finished=NOW()
WHERE lastname='$lname' AND firstname='$user' AND status='registered'";
$result = mysqli_query($conn, $query);// use for executing multiple query a single query statement.
echo'yes';
} else {
//check again if there's already data in database
$result = $conn->query("SELECT * FROM report
WHERE lessontitle = '$lID'
AND lastname='$lname' AND firstname='$user'");
//check of there existing data in the database
if ($result && mysqli_num_rows($result) > 0) {
echo'there is';
} else {
//if no, insert new data in database
mysqli_stmt_execute($stmt);
$result = mysqli_stmt_get_result($stmt);
$sql = "INSERT INTO report (firstname, lastname, lessontitle, status, department, acnt_stats, whID, user_type, finished) VALUES (?,?,?,?,?,?,?,?,NOW())";
if (!mysqli_stmt_prepare($stmt, $sql)) {
echo "SQL statement failed";
} else {
mysqli_stmt_bind_param($stmt, "ssssssis", $user, $lname, $lID, $ica, $dept, $acnt_status, $wh, $user_type);
mysqli_stmt_execute($stmt);
echo 'no';
}
}
}
}
这是管理员生成报告的页面：
<div class="listbody">
<div class="list" style="font-size:1.5vw;">
<?php
if (!count($reportOpex)) {
echo 'no record';
} else {
?>
<table>
<thead>
<tr>
<th colspan="5" style=" background-color: #EF3842;" class="uReport">User Report</th>
<tr>
<th>Firstname</th>
<th>LastName</th>
<th>Lesson Title</th>
<th>Status</th>
<th>Date&Time finished</th>
</tr>
</thead>
<tbody>
<form action="GenReport.php" method="post">
<?php
foreach($reportOpex as $r) {
?>
<tr>
<td><?php echo escape($r->firstname)?></td>
<td><?php echo escape($r->lastname); ?></td>
<td><?php echo escape($r->lessontitle); ?></td>
<td><?php echo escape($r->status); ?></td>
<td><?php echo escape($r->finished); ?></td>
</tr>
<?php
}
?>
</tbody>
<tr>
<th colspan="5" style=" background-color: #6495ED"><button class="gReport"><b>Generate Report ►</b></button></th>
</tr>
</form>
</table>
<?php
}
?>
不过我只想获取 whID，因此我可以将它用于 SELECT 语句中的 WHERE 子句。谢谢！
我已经解决了我的问题。我将会话数据放在 require('../fpdf/fpdf.php'); 之前我搜索过 fpdf 不想在 require('../fpdf/fpdf.php'); 之间有一个变量，直到 fpdf 代码结束。
这是我解决问题的方法：
<?php
session_start();
$_SESSION['warehouseID'] = $_POST['warehouseID'];
require('../fpdf/fpdf.php');
require('includes/dbh.inc.php');
class myPDF extends FPDF {
function header() {
$this->Image('../images/logo(dbs).png',10,6);
$this->SetFont('Arial','B',14);
$this->Cell(276,5,'User Report',0,0,'C');
$this->Ln();
$this->SetFont('Times', '',12);
$this->Cell(276,10,'WAREHOUSE DEPARTMENT',0,0,'C');
$this->Ln(20);
}
function footer() {
$this->SetY(-15);
$this->SetFont('Arial','',8);
$this->Cell(0,10,'Page '.$this->PageNo().'/{nb}',0,0,'C');
}
function headertable() {
$this->SetFont('Times','B',12);
$this->Cell(40,20,'WH#1 Finished',0,1,'C');
$this->Cell(34,10,'Firstname',1,0,'C');
$this->Cell(34,10,'Lastname',1,0,'C');
$this->Cell(65,10,'Lesson Title',1,0,'C');
$this->Cell(25,10,'Status',1,0,'C');
$this->Cell(40,10,'Finished',1,0,'C');
$this->Ln();
}
function headertable1() {
$this->SetFont('Times','B',12);
$this->Cell(40,20,'WH#1 Unfinished',0,1,'C');
$this->Cell(34,10,'Firstname',1,0,'C');
$this->Cell(34,10,'Lastname',1,0,'C');
$this->Cell(65,10,'Lesson Title',1,0,'C');
$this->Cell(25,10,'Status',1,0,'C');
$this->Cell(40,10,'Finished',1,0,'C');
$this->Ln();
}
function viewTable($conn) {
$this->SetFont('Times', '',12);
$stmt = $conn->query("SELECT DISTINCT firstname, lastname, lessontitle, status, finished FROM report
WHERE lessontitle!='no lesson taken yet' AND user_type='user' AND whID='{$_SESSION['warehouseID']}' AND acnt_stats='active'
ORDER BY lessontitle DESC");
while($data = $stmt->fetch_object()) {
$this->Cell(34,10,$data->firstname,1,0,'L');
$this->Cell(34,10,$data->lastname,1,0,'L');
$this->Cell(65,10,$data->lessontitle,1,0,'L');
$this->Cell(25,10,$data->status,1,0,'L');
$this->Cell(40,10,$data->finished,1,0,'L');
$this->Ln();
}
}
function viewTable1($conn) {
$this->SetFont('Times', '',12);
$stmt = $conn->query("SELECT DISTINCT firstname, lastname, lessontitle, status, finished FROM report
WHERE lessontitle='no lesson taken yet' AND user_type='user' AND whID='{$_SESSION['warehouseID']}' AND acnt_stats='active'
ORDER BY lessontitle DESC");
while($data = $stmt->fetch_object()) {
$this->Cell(34,10,$data->firstname,1,0,'L');
$this->Cell(34,10,$data->lastname,1,0,'L');
$this->Cell(65,10,$data->lessontitle,1,0,'L');
$this->Cell(25,10,$data->status,1,0,'L');
$this->Cell(40,10,$data->finished,1,0,'L');
$this->Ln();
}
}
}
$pdf = new myPDF();
$pdf->AliasNbPages();
$pdf->AddPage('P','Letter',0);
$pdf->headertable();
$pdf->viewTable($conn);
$pdf->AddPage('P','Letter',0);
$pdf->headertable1();
$pdf->viewTable1($conn);
$pdf->Output();
正如您在代码顶部看到的那样，有我从上一页获得的会话数据。我在 SELECT 语句中使用 whID='{$_SESSION['warehouseID']}' 以便 fpdf 将从会话中读取变量。我尝试了一切，但这是 fpdf 读取会话变量的唯一方法（在我的例子中）。我希望这对像我这样的初级程序员有所帮助！