Php bind_param() error not understandable

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Hi I have the following code:

PHP

$stmt="SELECT state FROM branch_info WHERE state = ? AND branch = ?";
							
if($stmt === false)
{
	trigger_error('Wrong SQL: ' . $sql . ' Error: ' . $conn->errno . ' ' . $conn->error, E_USER_ERROR);
}
$param1=$_POST["states"];
$param2=$_POST["exstbr"];
$stmt->bind_param('ss',$param1,$param2);
$stmt->execute();
$result = $stmt->get_result();
while($row = $result->fetch_array(MYSQLI_ASSOC))
{
	if($row["state"] > 0)
		echo "Already Exists";
}
$stmt->close();

I got the following error:

PHP

Fatal error: Call to a member function bind_param() on string in C:\---------------------------------------------- on line 60

Kindly help in this regard. Its urgent. Thanks in advance.

What I have tried:

I have tries to pass in the parameters directly it didnt work.
I used echo $param1; and echo $param2 to check the values presence before bind_param() statement and the values are echoed fine on the web page.
I also tried
$stmt->bind_param("ss", $param1, $param2);
but no wonders.

Posted 10-Jul-16 22:57pm

Member 8057273

Updated 11-Jul-16 4:33am

v2

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Prava-MFS · Accepted Answer · 2016-07-11T04:33:00

Hi,

You missed to prepare the statement. Please try below code.

$stmt = $conn->prepare("SELECT state FROM branch_info WHERE state = ? AND branch = ?");
							
if($stmt === false)
{
	trigger_error('Wrong SQL: ' . $sql . ' Error: ' . $conn->errno . ' ' . $conn->error, E_USER_ERROR);
}

$param1=$_POST["states"];
$param2=$_POST["exstbr"];
$stmt->bind_param('ss',$param1,$param2);
$stmt->execute();
$result = $stmt->get_result();

while($row = $result->fetch_array(MYSQLI_ASSOC))
{
	if($row["state"] > 0)
		echo "Already Exists";
}

$stmt->close();

Hoping $conn is your connection object and it should look like below.

C#

$conn = new mysqli($servername, $username, $password, $dbname);

Hope this will help you :).