I tried this but it didn't work, please i need support, i want a situation when i click on the delete button, i will truncate and empty the table.
This is the del.php file
<?php
$servername = "localhost";
$username = "root";
$password = "admin101";
$dbname = "school";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
if (isset($_REQUEST['delete'])) {
$myquery = mysql_query("TRUNCATE TABLE student");
if ($myquery) {
echo "Deleted successfully";
} else {
echo "Error: " . $myquery . "<br>" . $conn->error;
}
}
?>
The HTML below.
<form method="post" action="del.php">
<input type="submit" value="Delete" name="delete">
</form>
Related
What I wan't to do is create buttons that are automatically generated from the database. So when I add a new record in the database the button is created Is this possible with a loop? So yes how do I create the button.
This is what I have so far:
<?php
$servername = "localhost";
$username = "root";
$password = "Iamthebest1009";
$dbname = "dktp";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
$sql = "SELECT * FROM theme";
$result = $conn->query($sql);
if ($result->num_rows > 0) {
// output data of each row
while($row = $result->fetch_assoc()) {
echo "". $row["theme_name"]. "<br>";
}
} else {
echo "no results";
}
$conn->close();
?>
Yes it is possible. you need to echo html
<?php
$servername = "localhost";
$username = "root";
$password = "Iamthebest1009";
$dbname = "dktp";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
$sql = "SELECT * FROM theme";
$result = $conn->query($sql);
if ($result->num_rows > 0) {
// output data of each row
while($row = $result->fetch_assoc()) {
$your_url ="https://www.google.com";
echo "". $row["theme_name"]. "<br>";
echo '<input type="button" name="' . $row["theme_name"]. '" value="'. $row["theme_name"].'">';
}
} else {
echo "no results";
}
$conn->close();
?>
this is form which shows the data which i have to update the data i get correctly i want when i pressed update button the data is update by using up.php file
<?php
$servername = "localhost";
$username = "root";
$password = "";
$dbname = "alurdu_db";
$id = $_GET['id'];
mysql_query('SET CHARACTER SET utf8');
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
if ($conn->connect_error)
{
die("Connection failed: " . $conn->connect_error);
}
mysqli_set_charset($conn,"utf8");
$sql = "SELECT * FROM news WHERE news_id='$id'";
$result = $conn->query($sql);
if ($result->num_rows >0) {
while($row = $result->fetch_assoc()) {
?>
<form action="up.php" method="post" enctype="multipart/form-data">
<div class="form-group">
<input type="text" class="form-control" name="news_title" value="<?=$row["title"]?>">
<div class="col-md-2 text-center">News Title</div>
<button type="submit" class="btn btn-default text-align" style="background-color:#3c8dbc;color:white" value="">Update</button></a>
</form>
<?php
}
} else {
echo "Wrong Page";
}
$conn->close();
?>
this is up.php file i don't know why it does not getting the id if update without id it update all the data of the table
<?php
$news_title = $_POST["news_title"];
$servername = "localhost";
$username = "root";
$password = "";
$dbname = "alurdu_db";
$news_id = $_GET['id'];
mysql_query('SET CHARACTER SET utf8');
$conn = new mysqli($servername, $username, $password, $dbname);
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
mysqli_set_charset($conn,"utf8");
$sql = " UPDATE news SET title='$news_title' WHERE news_id='$news_id' ";
if ($conn->query($sql) === TRUE) {
echo "Updated";
}
else {
echo "Error: " . $sql . "<br>" . $conn->error;
}
$conn->close();
?>
Looks like your SQL statement isn't in closed quotes. It should look like this:
$sql = "UPDATE news SET title='" . $news_title . "' WHERE news_id='" . $news_id . "'";
I need to delete a data on database by using PHP code, i have written the code but there is some error message.
here is the php code(del.php):-
<!DOCTYPE html>
<html>
<body>
<?php
$conn = mysql_connect('localhost', 'root','');
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
$sql = "DELETE FROM register WHERE name='' ";
if ($conn->query($sql) === TRUE)
{
echo "Record deleted successfully";
} else {
echo "Error deleting record: " . $conn->error;
}
$conn->close();
?>
</body>
</html>
The database name is 'selva' and the table name is 'register', in database the file names are "Name,Email,Contact,Address", i need to delete the name or email or contact . how to delete!!
//this will delete the whole row:
<!DOCTYPE html>
<html>
<body>
<?php
$servername = "localhost";
$username = "root";
$password = "your_password"; // add your pw from the here
$dbname = "selva";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
//this will delete the whole row
$sql = "DELETE FROM register WHERE 1 ";
if ($conn->query($sql) === TRUE)
{
echo "Record deleted successfully";
} else {
echo "Error deleting record: " . $conn->error;
}
$conn->close();
?>
</body>
</html>
//this will delete only the COLUMNS you set here:
<!DOCTYPE html>
<html>
<body>
<?php
$servername = "localhost";
$username = "root";
$password = "your_password"; // add your pw from the here
$dbname = "selva";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
$sql = "ALTER TABLE register DROP Name, DROP Email; DROP Contact; ";
if ($conn->query($sql) === TRUE)
{
echo "Record deleted successfully";
} else {
echo "Error deleting record: " . $conn->error;
}
$conn->close();
?>
</body>
</html>
hope it will help you :)
I am trying to store jpg images into MySQL database , The insertion works but I am unable to display the results.
here is MySQL table definition:
drop table if exists product_image;
create table product_image(
id_img int not null primary key auto_increment,
name varchar(512),
img LONGBLOB NOT NULL,
id_product int not null
);
PHP script to store User input file:
<!DOCTYPE html>
<html>
<body>
<form action="upload.php" method="post" enctype="multipart/form-data">
Select image to upload:
<input type="file" name="image" >
<input type="submit" value="Upload" name="submit">
</form>
<?php
$servername = "localhost";
$username = "root";
$password = "123456";
$dbname = "store";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
if (isset($_POST['submit'])) {
$imageName = mysql_real_escape_string($_FILES["image"]["name"]);
$imageData = mysql_real_escape_string(file_get_contents($_FILES["image"]["tmp_name"]));
$imageType = mysql_real_escape_string($_FILES["image"]["type"]);
if (substr($imageType, 0, 5) == "image") {
$sql = "insert into product_image (name,img,id_product) values ('$imageName','$imageData','65') ";
if ($conn->query($sql) === TRUE) {
echo "New record created successfully";
} else {
echo "Error: " . $sql . "<br>" . $conn->error;
}
echo $imageName, $imageType;
}
else {
echo "select image type:";
}
}
$conn->close();
?>
</body>
</html>
PHP script to display image:
<?php
header("content-type:image/jpg");
$servername = "localhost";
$username = "root";
$password = "123456";
$dbname = "store";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
$q = "select * from product_image";
$result = $conn->query($q);
if ($result->num_rows > 0) {
// output data of each row
while ($row = $result->fetch_assoc()) {
$img = $row["img"];
#echo "id: " . $row["img"]. "<br>";
#echo '<img src="data:image;base64, '.$row["img"].' height="200" width="200">';
}
}
else {
echo "0 results";
}
echo $img;
$conn->close();
?>
I just see small icon when I call the PHP script to view the image. Is there any thing that i am missing.
thanks.
use something like this
<img src="data:image/jpeg;base64,<?php echo base64_encode($row['img']); ?>" class="latest_images img-responsive img-thumbnail" alt="Cinque Terre" >
I have a html form, say example
<form action="form.php" method="post">
First name:<br>
<input type="text" id="fname" name="fname">
<br>
Last name:<br>
<input type="text" id="lname" name="lname">
<br><br>
<input type="submit" value="Submit">
</form>
and form.php
<?php
$servername = "localhost";
$username = "database1";
$password = "xxxxxxxx";
$dbname = "database1";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
//escape variables for security
$fname = mysqli_real_escape_string($conn, $_POST['fname']);
$lname = mysqli_real_escape_string($conn, $_POST['lname']);
$sql = "INSERT INTO mytable (fname,lname)
VALUES ('$fname','$lname')";
if ($conn->query($sql) === TRUE) {
echo "Successfully Saved";
} else {
echo "Error: Go back and Try Again ! " . $sql . "<br>" . $conn->error;
}
$conn->close();
?>
The form.php is saving that data to database1 .
I want that data to be saved to another database database2 along with database1.
Is it possible ?? If yes then what changes should be made in the code ?
If it is not possible then is it possible to copy data from database1 to database2 automatically? Whenever a new row is added in database1 then it should automatically copied to database2.
I want the same data to be in two different database. How can I achieve any of the above said ??
From php you just have to create new connection to DB.
<?php
$servername = "localhost";
$username = "database1";
$password = "xxxxxxxx";
$dbname = "database1";
$servernameS = "localhost";
$usernameS = "database2";
$passwordS = "xxxxxxxx";
$dbnameS = "database2";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
$connS = new mysqli($servernameS, $usernameS, $passwordS, $dbnameS);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
if ($connS->connect_error) {
die("Connection failed: " . $connS->connect_error);
}
//escape variables for security
$fname = mysqli_real_escape_string($conn, $_POST['fname']);
$lname = mysqli_real_escape_string($conn, $_POST['lname']);
$sql = "INSERT INTO mytable (fname,lname)
VALUES ('$fname','$lname')";
if ($conn->query($sql) === TRUE) {
echo "Successfully Saved";
} else {
echo "Error: Go back and Try Again ! " . $sql . "<br>" . $conn->error;
}
if ($connS->query($sql) === TRUE) {
echo "Successfully Saved";
} else {
echo "Error: Go back and Try Again ! " . $sql . "<br>" . $connS->error;
}
$conn->close();
$connS->close();
?>
What it sounds like you need is to setup replication.
Here is the official documentation on replication. Here is a simpler step-by-step guide setting it up.
If replication isn't what you wanted, you could accomplish the same thing by connecting to database2 in addition to database1 then running the query once on both.
You can use something like using mysqli::selectDB method:
<?php
$mysqli = new mysqli("localhost", "my_user", "my_password", "test");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
/* return name of current default database */
if ($result = $mysqli->query("SELECT DATABASE()")) {
$row = $result->fetch_row();
printf("Default database is %s.\n", $row[0]);
$result->close();
}
/* change db to world db */
$mysqli->select_db("world");
/* return name of current default database */
if ($result = $mysqli->query("SELECT DATABASE()")) {
$row = $result->fetch_row();
printf("Default database is %s.\n", $row[0]);
$result->close();
}
$mysqli->close();
?>
Check out the manual.
Similar question as yours at SO.