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[英]How to delete multiple rows from mysql database with checkbox using PHP?
[英]How Do I fetch multiple rows from MySQL and and make them the value of checkbox(es) to be inserted to a another table in the database, in php?
我有一個名為subjects和另一個命名的類的表。 建築物的應用程序設計使得用戶首先填寫表格,將學校提供的科目發送到我的表“ subjects”。 然后,他填寫另一張表格在學校中創建班級,從正在創建的新班級中選擇提供哪些科目(從這些表中的“主題”中選擇)。 在提交表單時,他們的輸入將進入表“ classes”,該表具有以下行; id,className,classSubjects。
這是我的代碼:
<?php require_once 'controller/connect.php'; ?>
<!DOCTYPE html>
<html><head><title>TTApp</title></head>
<body>
<form action="controller/classReg.php" method="post">
<label>Class Name</label>
<input type="text" name="className" required="true"><br><br>
<label>Subjects Offered</label>
<?php
$sql = "SELECT * FROM subjects";
$result = $connect->query($sql);
if($result->num_rows > 0) {
while($row = $result->fetch_assoc()) {
echo "<input type='checkbox' name='classSubjects' value=".$row['title'].">
".$row['title']." ";
}
}
?>
<br><br><input type="submit" name="submit" value="Register Class">
</form>
</div>
</body>
</html>
和controller / classReg.php在這里:
<?php
require_once 'connect.php';
if($_POST) {
if(isset($_POST['className'])) {
$className= $_POST['className'];
}
if(isset($_POST['classSubjects'])) {
$classSubjects = array($_POST['classSubjects']);
echo $classSubjects;
} else {
echo "no class subject";
}
$sql = "INSERT INTO classes (className, classSubjects) VALUES ('$className', '$classSubjects')";
if($connect->query($sql) === TRUE) {
echo "<p>New Record Successfully Created</p>";
echo "<a href='../create.php'><button type='button'>Back</button></a>";
echo "<a href='../index.php'><button type='button'>Home</button></a>";
} else {
echo "Error " . $sql . ' ' . $connect->connect_error;
}
$connect->close();
}
?>
這不起作用。 正確顯示,加載表“主題”中的所有主題,但只有最后一個主題進入表“類”。 感覺我需要在某個地方使用數組但是卡住了。
首先更改此行:
echo "<input type='checkbox' name='classSubjects' value=".$row['title'].">
至:
echo "<input type='checkbox' name='classSubjects[]' value=".$row['title'].">
然后你在這里r controller / classReg.php:
<?php
require_once 'connect.php';
if ($_POST) {
if (isset($_POST['className'])) {
$className = $_POST['className'];
}
if (isset($_POST['classSubjects'])) {
$classSubjects = $_POST['classSubjects'];
}else {
echo "no class subject";
}
$sql = "INSERT INTO classes (className, classSubjects) VALUES (?, ?)";
$stmt = $connect->prepare($sql);
foreach ($classSubjects as $key => $subject) {
$stmt->bind_param("ss", $className, $subject);
}
if ($stmt->execute()) {
echo "<p>New Record Successfully Created</p>";
echo "<a href='../create.php'><button type='button'>Back</button></a>";
echo "<a href='../index.php'><button type='button'>Home</button></a>";
} else {
echo "Error " . $connect->error;
}
$stmt->close();
$connect->close();
}
?>
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