Why the sql could not execute the insert query? [duplicate] - php

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When to use single quotes, double quotes, and backticks in MySQL
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Why I am getting an error when using w3school tutorial? [duplicate]
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Closed 6 years ago.
I am trying to execute below code but I keep receiving below error :
"Could not execute the insert query."
It seem like the insert into Employees isn't working.
I am not sure what is missing.
Below is my code:
if(isset($_POST['submit'])) {
$fname = $_POST['fname'];
$minitial = $_POST['minitial'];
$lname = $_POST['lname'];
$gender = $_POST['gender'];
$phone = $_POST['phone'];
$dob = $_POST['dob'];
$ssn = $_POST['ssn'];
$address = $_POST['address'];
$city = $_POST['city'];
$state = $_POST['state'];
$zip = $_POST['zip'];
$email = $_POST['email'];
$username = $_POST['username'];
$password = $_POST['password'];
if($fname == "" || $minitial == "" || $lname == "" || $gender == "" ||
$phone == "" || $dob == "" || $ssn == "" || $address == "" ||
$city == "" || $state == "" || $zip == "" || $email == "" ||
$username == "" || $password == "") {
echo "All fields should be filled. Either one or many fields are empty.";
echo "<br/>";
echo "<a href='register.php'>Go back</a>";}
else {
mysqli_query($mysqli, "INSERT INTO 'Employees'('fname', 'minitial', 'lname', 'gender', 'phone', 'dob', 'ssn', 'address', 'city', 'state', 'zip', 'email', 'username', 'password') VALUES('$fname', '$minitial', '$lname', '$gender', '$phone', '$dob', '$ssn', '$address', '$city', '$state', '$zip', '$email', '$username', md5('$password'))")
or die("Could not execute the insert query.");
echo "Registration successfully";
echo "<br/>";
echo "<a href='login.php'>Login</a>";
}

Answer 1

That's cause you are quoting the table name as pointed below. Don't single quote column names else it's treated as string literal rather a actual table/column name
INSERT INTO 'Employees'
You actually meant to escape it like
INSERT INTO `Employees`
Re-write your INSERT statement to be like
"INSERT INTO `Employees`(`fname`, `minitial`, `lname`, `gender`, `phone`, `dob`, `ssn`, `address`, `city`, `state`, `zip`, `email`, `username`, `password`) VALUES('$fname', '$minitial', '$lname', '$gender', '$phone', '$dob', '$ssn', '$address', '$city', '$state', '$zip', '$email', '$username', md5('$password'))"

Answer 2

Replace ' into ` or remove ' in filed list in insert query.
So you query will be
mysqli_query($mysqli, "INSERT INTO `Employees`(`fname`, `minitial`, `lname`, `gender`, `phone`, `dob`, `ssn`, `address`, `city`, `state`, `zip`, `email`, `username`, `password`) VALUES('$fname', '$minitial', '$lname', '$gender', '$phone', '$dob', '$ssn', '$address', '$city', '$state', '$zip', '$email', '$username', md5('$password'))")

Answer 3

try this query.
Because you put Table name and field name in single quote.
mysqli_query($mysqli, "INSERT INTO Employees(fname, minitial, lname, gender, phone, dob, ssn, address, city, state, zip, email, username, password) VALUES('$fname', '$minitial', '$lname', '$gender', '$phone', '$dob', '$ssn', '$address', '$city', '$state', '$zip', '$email', '$username', md5('$password'))")

Answer 4

The mysqli_error() won't solve your problem, but it will at least tell you where it is. Replace:
mysqli_query($mysqli, "INSERT INTO 'Employees'('fname', 'minitial', 'lname', 'gender', 'phone', 'dob', 'ssn', 'address', 'city', 'state', 'zip', 'email', 'username', 'password') VALUES('$fname', '$minitial', '$lname', '$gender', '$phone', '$dob', '$ssn', '$address', '$city', '$state', '$zip', '$email', '$username', md5('$password'))")
or die("Could not execute the insert query.");
with:
mysqli_query($mysqli, "INSERT INTO 'Employees'('fname', 'minitial', 'lname', 'gender', 'phone', 'dob', 'ssn', 'address', 'city', 'state', 'zip', 'email', 'username', 'password') VALUES('$fname', '$minitial', '$lname', '$gender', '$phone', '$dob', '$ssn', '$address', '$city', '$state', '$zip', '$email', '$username', md5('$password'))")
or die(mysqli_error($mysqli));