I have the following code:
$selectUserQuery = 'SELECT email_address, password FROM user WHERE email_address = :email_address AND password = :password';
$prepSelectUser = $conn->prepare($selectUserQuery);
/*
* HOW DO I ADD MULTIPLE PARAMETERS TO THIS BINDPARAM() FUNCTION?
*/
$prepSelectUser->bindParam(':email_address', $email, PDO::PARAM_INT);
$prepSelectUser->execute();
$userResult = $prepSelectUser->fetchAll();
$userCount = count($userResult);
How can I add multiple parameters to the bindParam() function?
You don't actually need this function at all. as well as most of other code you used.
$sql = 'SELECT 1 FROM user WHERE email_address = ? AND password = ?';
$stmt = $conn->prepare($sql);
$stmt->execute([$email, $password]);
$userCount = $stmt->fetchColumn();
First, change
$prepSelectUser->bindParam(':email_address', $email, PDO::PARAM_INT);
to
$prepSelectUser->bindParam(':email_address', $email, PDO::PARAM_STR);
then call another bindParam, like
$prepSelectUser->bindParam(':password', $password, PDO::PARAM_STR);
Related
I hope you can help. I am trying to use the AES_ENCRYPT on my update query but I am unable to get it to work.
I am trying to encrypt the first_name variable but when I run the query it refuses to update the field. When I remove the AES_ENCRYPT method from the update query it works absolutely fine.
My current code looks as follows:
if(!define('SALT')) define('SALT','4a7s3n3j93n98lk');
$sql = "UPDATE cases
SET first_name=?,
last_name=?
WHERE cases_id=?";
$query = $db->prepare($sql);
$query->execute(array(
AES_ENCRYPT('$first_name','".SALT."'),
$last_name,
$id));
$db = null;
I managed to fix my AES_ENCRYPT update query issue with the following revision:
$encrypt_key = '4a7s3n3j93n98lk';
$statement = $db->prepare("UPDATE cases SET
first_name = AES_ENCRYPT(:first_name, '$encrypt_key'),
last_name = AES_ENCRYPT(:last_name, '$encrypt_key'),
WHERE cases_id = :id");
$statement->bindParam(':id', $id, PDO::PARAM_INT);
$statement->bindParam(':first_name', $first_name, PDO::PARAM_STR);
$statement->bindParam(':last_name', $last_name, PDO::PARAM_STR);
$statement->execute();
$db = null;
First, according to another SO post, I tried combining the two statements into one.
<?php
$conn->setAttribute(PDO::ATTR_EMULATE_PREPARES, 1);
$sql = "UPDATE users SET pass = :password WHERE usrn = :id;
SELECT prim FROM users WHERE usrn = :id;";
$stmt = $conn->prepare($sql);
$stmt->bindParam(":id", $_SESSION["idPersist"]);
$stmt->bindParam(":password", password_hash($_POST["password"], PASSWORD_DEFAULT));
$stmt->execute();
$result = $stmt->fetch(PDO::FETCH_ASSOC); //// line 71
?>
However, this kept throwing the error: Fatal error: Uncaught PDOException: SQLSTATE[HY000]: General error on line 71.
I couldn't find any relevant solutions to this issue, so I decided to simply split up the two statements.
<?php
$sql = "UPDATE users SET pass = :password WHERE usrn = :id";
$stmt = $conn->prepare($sql);
$stmt->bindParam(":id", $_SESSION["idPersist"]);
$stmt->bindParam(":password", password_hash($_POST["password"], PASSWORD_DEFAULT));
$stmt->execute();
$sql = "SELECT prim FROM users WHERE usrn = :id";
$stmt = $conn->prepare($sql);
$stmt->bindParam(":id", $_SESSION["idPersist"]);
$stmt->execute();
$result = $stmt->fetch(PDO::FETCH_ASSOC);
$_SESSION["session"] = $result["prim"];
?>
But a var_dump($result) is returning Bool(false), so obviously something is not working right with fetching the result and storing it as a variable, it seems, in both cases.
I'm new to PHP and MySQL, so I'm at a loss right now.
Change this,
$sql = "SELECT prim FROM users WHERE usrn = :id";
$stmt = $conn->prepare($sql);
$stmt->bindParam(":id", $_SESSION["idPersist"]);
$result = $stmt->fetch(PDO::FETCH_ASSOC);
$_SESSION["session"] = $result["prim"];
To this,
$sql = "SELECT prim FROM users WHERE usrn = :id";
$stmt = $conn->prepare($sql);
$stmt->bindParam(":id", $_SESSION["idPersist"]);
$stmt->execute(); // Your problem
$result = $stmt->fetch(PDO::FETCH_ASSOC);
$_SESSION["session"] = $result["prim"];
You are missing the execution of the query.
The problem is, I have a statement like this one below and i use it in server side of my android app
$statement = mysqli_prepare($con, "SELECT * FROM accounts WHERE email = ? OR username = ?");
mysqli_stmt_bind_param($statement, "ss", $email, $username);
$result = mysqli_stmt_execute($statement);
$rows = mysqli_stmt_fetch($result);
And I want to know how many rows are back from it so I can know if there is already data in the database with the same username and email or not, but it doesn't work.
How to solve this problem? And thanks in advance.
And I want to know how many rows are back
Nope, you don't. That's a false goal.
When working with a database, you should always request the exact data you need, instead of doing some calculations on the client side.
So in your case you need the user info - so select that info. Means this very user info you can use to tell whether your query returned anything or not.
$statement = mysqli_prepare($con, "SELECT * FROM accounts WHERE email = ? OR username = ?");
mysqli_stmt_bind_param($statement, "ss", $email, $username);
mysqli_stmt_execute($statement);
$result = mysqli_get_result($statement);
$user = mysqli_fetch_assoc($result);
//now you have the very $user variable to tell whether anything was found
if ($user) {
//user exists
}
All you are missing is to use the num_rows function with the resulting mysqli object:
$statement = mysqli_prepare($con,
"SELECT * FROM accounts WHERE email = ? OR username = ?");
mysqli_stmt_bind_param($statement, "ss", $email, $username);
$result = mysqli_stmt_execute($statement);
$numbRows = $result->num_rows;
//printing the result:
echo "number of rows = {$numbRows}<br>";
So I'm checking to see if a user already liked a post. Here's what I'm doing
$id = 65;
//Get likes count
$stmt = $con->prepare("SELECT * FROM likes WHERE liked_post_id = :liked_post_id");
$stmt->bindValue(':liked_post_id', $id, PDO::PARAM_STR);
$stmt->execute();
$return = $stmt->fetchAll(PDO::FETCH_ASSOC);
?>
<pre>
<?php
print_r($return);
?>
</pre>
<?php
//Get user IP
$ip = $_SERVER['SERVER_ADDR'];
//Check if user liked post
$result = $con->prepare("SELECT * FROM likes WHERE liked_post_user = :username");
$result->bindParam(':username', $_SESSION['user']);
$result->execute();
$reprint = $result->fetch(PDO::FETCH_ASSOC);
echo $reprint['liked_post_user'];
$return_cnt = count($reprint);
if($return_cnt < 1){
//Insert like
$query = $con->prepare("INSERT INTO likes (liked_post_id, liked_post_user, liked_post_ip) VALUES (:usr_id, :user, :ip)");
$query->bindValue(':usr_id', $id, PDO::PARAM_STR);
$query->bindValue(':user', $_SESSION['user']);
$query->bindValue(':ip', $ip, PDO::PARAM_STR);
$query->execute();
}
The problem is $query never gets ran. Even though I have no record of the username in the DB. So I'd expect it to run once, and insert $query into the DB, once. But it isn't. I'm not getting any errors either. Any ideas?
First of all you can simply count $reprint. To answer your second issue, you need to select the post, or else it'll simply check all the posts. So do
$result = $con->prepare("SELECT * FROM likes WHERE liked_post_user = :username AND liked_post_id = :post_id");
$result->bindParam(':username', $_SESSION['user']);
$result->bindParam(':post_id', $_GET['id']);
$result->execute();
$reprint = $result->fetch(PDO::FETCH_ASSOC);
Note that if no user is logged in it'll still input an empty value. So make sure to figure a way around that.
The second query should look for a specific liked_post_id. It's currently looking for any posts that the user liked, not just this one.
//Check if user liked post
$result = $con->prepare("SELECT * FROM likes WHERE liked_post_user = :username AND liked_post_id = :id");
$result->bindParam(':username', $_SESSION['user']);
$result->bindParam(':id', $id);
$result->execute();
$reprint = $result->fetch(PDO::FETCH_ASSOC);
And then you should test whether the query found anything by testing whether $reprint is an array or false:
if ($reprint) {
echo $reprint['liked_post_user'];
} else {
//Insert like
$query = $con->prepare("INSERT INTO likes (liked_post_id, liked_post_user, liked_post_ip) VALUES (:usr_id, :user, :ip)");
$query->bindValue(':usr_id', $id, PDO::PARAM_STR);
$query->bindValue(':user', $_SESSION['user']);
$query->bindValue(':ip', $ip, PDO::PARAM_STR);
$query->execute();
}
I have two stored procedures in my database Postgres, both have the same name but the difference are the parameters.
procedure1(::string, ::integer, ::string, ::integer)
procedure1(::string, ::integer, ::integer)
In PDO doing bindParam correct, is coming STR, INT, INT but the prepere always performs procedure1.
How do I get him to understand what I call the procedure2?
Some information for more help? I clear? thanks
EDIT ===
...
$bounds = null; // forced for debug
if(!is_null($bounds)){
$query = "SELECT procedure1(:name, :domain, :geo, :userid)";
$stmt = $db->prepare($query);
$stmt->bindParam('name', $name, PDO::PARAM_STR);
$stmt->bindParam('domain', $idDomain, PDO::PARAM_INT);
$stmt->bindParam('geo', $geoString, PDO::PARAM_STR);
$stmt->bindParam('userid', $userId, PDO::PARAM_INT);
}else{
$query = "SELECT procedure1(:name, :domain, :userid)";
$stmt = $db->prepare($query);
$stmt->bindParam('name', $name, PDO::PARAM_STR);
$stmt->bindParam('domain', $idDomain, PDO::PARAM_INT);
$stmt->bindParam('userid', $userId, PDO::PARAM_INT);
}
$result = $stmt->execute();
...
The error it gives is that he is running a procedure that requires four parameters
Try changing your $query statements to explicitly tell PDO the types, and to avoid extra code switch to bindValue (PDO uses the PARAM flags to format SQL, not to cast data types):
$bounds = null; // forced for debug
if(!is_null($bounds)){
$query = "SELECT procedure1(:name::VARCHAR, :domain::INTEGER, :geo::VARCHAR, :userid::INTEGER)";
$stmt = $db->prepare($query);
$stmt->bindValue('name', $name);
$stmt->bindValue('domain', $idDomain);
$stmt->bindValue('geo', $geoString);
$stmt->bindValue('userid', $userId);
}else{
$query = "SELECT procedure1(:name::VARCHAR, :domain::INTEGER, :userid::INTEGER)";
$stmt = $db->prepare($query);
$stmt->bindValue('name', $name);
$stmt->bindValue('domain', $idDomain);
$stmt->bindValue('userid', $userId);
}
$result = $stmt->execute();