This question already has answers here:
When to use single quotes, double quotes, and backticks in MySQL
(13 answers)
Closed 2 years ago.
I want to query one new to sql table, the code run but it doesn't insert anything into the database.
I try to read back the pdo manual but doesn't understand which part I am wrong.
$query = "INSERT INTO 'easycomputing'('STID', 'NAME', 'TONG') VALUES (:STID, :NAME, :TONG)";
$dns = " mysql:host=localhost;dbname=phan1";
$username="root";
$password= "";
// $password="";
try{
//access the database
$db = new PDO($dns, $username, $password);
//execute the query
$statement = $db->prepare($query);
$statement->bindValue(':STID', 137, PDO::PARAM_INT);
$statement->bindValue(':NAME', 'tenten', PDO::PARAM_STR);
$statement->bindValue(':TONG', 5, PDO::PARAM_INT);
//execute the query
if( $statement->execute() ){
echo "record tranfer successfully";
}else{
echo "fail to execute the record";
}
Sorry, but I think that you shouldn't isert the name of columns between codes : (STID, NAME, TONG)
Related
This question already has answers here:
Single result from database using mysqli
(6 answers)
Closed 2 years ago.
I have a query with a parameter to bind stored in the session.
I tested the query on the database and it should return 1 row but it does not!
I tried everything. Its not an issue with the $id because I use it for another query and it is fully working:
$resultReturn = $con->prepare( 'SELECT `returns`.`return_id`, `returns`.`return_status` FROM
`agents` LEFT JOIN `returns` ON `returns`.`agent_id` = `agents`.`id` AND `agents`.`id` = ?');
$resultReturn->bind_param('i', $id);
$resultReturn->execute();
$resultReturn->fetch();
$resultReturn->store_result();
$resultReturn->bind_result($returnID, $returnStatus);
if($resultReturn)
{
echo $resultReturn->num_rows; //zero
while($row = $resultReturn->fetch_row())
{
echo $resultReturn->num_rows; //incrementing by one each time
}
echo $resultReturn->num_rows; // Finally the total count
}
$con -> close();
the first if returns always FALSE; If I set manually the id it works!
Here is my other query at the beginning of the same page (and its perfectly working):
$con = mysqli_connect($DATABASE_HOST, $DATABASE_USER, $DATABASE_PASS, $DATABASE_NAME);
if (mysqli_connect_errno()) {
exit('Failed to connect to MySQL: ' . mysqli_connect_error());
}
// We don't have the password or email info stored in sessions so instead we can get the results from the database.
$stmt = $con->prepare('SELECT password, email, role FROM agents WHERE id = ?');
// In this case we can use the account ID to get the account info.
$stmt->bind_param('i', $id);
$stmt->execute();
$stmt->bind_result($password, $email, $role);
$stmt->fetch();
$stmt->close();
It is because I'm using the same connection for multiple queries?
Move fetch() after bind_result().
The correct order should be:
$resultReturn = $con->prepare(/* */);
$resultReturn->bind_param('i', $id);
$resultReturn->execute();
$resultReturn->store_result();
$resultReturn->bind_result($returnID, $returnStatus);
$resultReturn->fetch();
This question already has answers here:
How do I escape reserved words used as column names? MySQL/Create Table
(4 answers)
Closed 2 years ago.
I am making a prepared statement in PHP and my code is fine until I add in 'id' and 'key' to my parameters. They are definitely in the table that I am requesting too. What is wrong? Thanks in advance!
ERROR: Call to a member function bind_param() on boolean
if($_POST['userx']){
echo '<div id="div2"><div id="font2">Dashboard</div>';
$queryA = "SELECT name,profo,password,id,key FROM collegestudents WHERE email = ?";
$stmt = $connection->prepare($queryA);
$stmt->bind_param('s',$_POST['userx']);
$stmt->bind_result($name1,$profo,$password1,$key,$id);
$stmt->execute();
$stmt->fetch();
$stmt->close();
Key is a reserved keyword in mysql.
It's a good habit to enclose field names and table names in backticks in queries but also to check for errors.
$queryA = "SELECT `name`,`profo`,`password`,`id`,`key` FROM `collegestudents` WHERE `email` = ?";
$stmt = $connection->prepare($queryA);
if ($stmt) {
$stmt->bind_param('s',$_POST['userx']);
...
}
else {
echo "MySQL ERROR: " . $connection->error;
}
$stmt = $connection->prepare($queryA);
returns boolean(false)
make sure your query is correct
you can do a simple check like this
$stmt = $connection->prepare($queryA);
if (!$stmt) {
echo "failed to run";
} else {
$stmt->bind_param('s',$_POST['userx']);
$stmt->bind_result($name1,$profo,$password1,$key,$id);
$stmt->execute();
$stmt->fetch();
}
Edit:
if you are using PDO you were doing it wrong it should be like this
$stmt = $conn->prepare("SELECT name,profo,password,id,key FROM
collegestudents WHERE email = :email");
$stmt->bindParam(':email', $email);
Change your database connection file with
<?php $con = new PDO('mysql:host=127.0.0.1;dbname=yourdatabasename;','username',''); ?>
Then change below line
$queryA = "SELECT name,profo,password,id,key FROM collegestudents WHERE email = ?";
$stmt = $connection->prepare($queryA);
$stmt->bind_param('s',$_POST['userx']);
$stmt->bind_result($name1,$profo,$password1,$key,$id);
$stmt->execute();
with
$queryA = "SELECT name,profo,password,id,key FROM collegestudents WHERE email = :v";
$stmt = $connection->prepare($queryA);
$stmt->execute( array('v' => $_POST['userx']) );
This question already has answers here:
When to use single quotes, double quotes, and backticks in MySQL
(13 answers)
Closed 6 years ago.
I've been stuck on this for about 3 days now and asked multiple people about this and no one seems to have an answer to me why this is not working. I cannot figure out why they aren't binding because the bindings work on the select statement but not the update. I know for a fact that $sessCheck['userid'] and $sessCheck['hwid'] are being set because I already printed them out to check if they were null or something.
The request inbound from slim
{"userid": "1000","hwid":"TESTING"}
The function
function updateHWID(){
$request = Slim::getInstance()->request();
//$bsreq = utf8_encode();
$sessCheck = json_decode($request->getBody(), true, 9 );
$db = getConnection();
$sql = "SELECT userid,hwID FROM accounts WHERE userid = :userid";
$stuff = $db->prepare($sql);
$stuff->bindParam("userid", $sessCheck['userid']);
$stuff->execute();
$db = null;
$rows = $stuff->fetch(PDO::FETCH_ASSOC);
if ($rows['hwID'] != $sessCheck['hwid']) {
$sql2 = "UPDATE accounts SET hwID=':hwid' WHERE userID = ':userid';";
try {
$db2 = getConnection();
$stmt = $db2->prepare($sql2);
//these two param's are not binding
$stmt->bindParam("userid", $sessCheck['userid']);
$stmt->bindParam("hwid", $sessCheck['hwid']);
$stmt->execute();
//$rt = $stmt->fetch(PDO::FETCH_ASSOC);
//$stmt->debugDumpParams();
} catch(PDOException $e) {
echo '{"error":{"text":'. $e->getMessage() .'}}';
}
}
}
This is the result incoming on the sql log
1372 Query UPDATE accounts SET hwID=':hwid' WHERE userID = ':userid'
I've also tried this as well as using the which also didn't work
$stmt->bindParam(":userid", $sessCheck['userid']);
$stmt->bindParam(":hwid", $sessCheck['hwid']);
Then I tried this too and it didn't work
$stmt = $db2->prepare("UPDATE accounts SET hwID='?' WHERE userID = '?';");
$stmt->bindParam(1, $sessCheck['hwid'], PDO::PARAM_STR);
$stmt->bindParam(2, $sessCheck['userid'], PDO::PARAM_INT);
Take the binded parameter names out of their single quotes.
so:
$sql2 = "UPDATE accounts SET hwID=:hwid WHERE userID = :userid;";
This question already has answers here:
When to use single quotes, double quotes, and backticks in MySQL
(13 answers)
Closed 8 years ago.
I know the connection works as i have used this to insert data into the tables but i cant seem to pull it out. Any help would be greatly appreciated.
//Gets id from url
$projectid = $_GET['id'];
try{
// DB CONNECTION
$link = $database->connection;
$link->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
// Query for projects
$q = ("SELECT * FROM projects WHERE id=':pid'");
$prep = $link->prepare($q);
$array = array(
':pid' => $projectid
);
$prep->execute($array);
}catch(PDOException $pde){
echo $pde->getMessage();
die();
}
//Method to retrieve results
while ($r = $prep->fetch()) {
echo $r['projectname'];
}
When you are using PDO with prepared statements, you don't need the single quotes around the pid term. PDO automatically inserts those for you. Just do:
$q = ("SELECT * FROM projects WHERE id = :pid");
This question already has answers here:
Table name as parameter using PDO/MySQL prepared statement [duplicate]
(2 answers)
Closed 8 years ago.
$dbh = new PDO('mysql:host=' . $_POST['db_host'], $_POST['db_user'], $_POST['db_user_password']);
$sql = 'CREATE DATABASE :db_name';
$sth = $dbh->prepare($sql);
$sth->bindParam(':db_name', $_POST['db_name']);
var_dump($sth->execute());
It's allways show false. But if directly specify db_name, like this:
$sql = 'CREATE DATABASE database';
$sth = $dbh->prepare($sql);
$sth->execute();
It will work. What I'm doing wrong?
You can only bind data (column values) in parametrized query, not column name and table name. Also, in your code you tried to parametrize connection initialization which I think not correct.
You can alternatively depend on white list of db names:
$databases = array('dbone', 'dbtwo');
then check
if(in_array($_POST['db_name'], $databases) ){
$dbname = $_POST['db_name'];
}