Sometimes, we want to check if a row exists in MySQL and PHP.
In this article, we’ll look at how to check if a row exists in MySQL and PHP.
How to check if a row exists in MySQL and PHP?
To check if a row exists in MySQL and PHP, we can run a prepared statement.
For instance, we write
$query = "SELECT `email` FROM `tblUser` WHERE email=?";
if ($stmt = $dbl->prepare($query)){
$stmt->bind_param("s", $email);
if($stmt->execute()){
$stmt->store_result();
$email_check= "";
$stmt->bind_result($email_check);
$stmt->fetch();
if ($stmt->num_rows == 1){
echo "That Email already exists.";
exit;
}
}
}
to run the select $query.
We call $dbl->prepare to create the prepared statement from the $query string.
And we call bind_param to replace the placeholder with the $email value.
We call $stmt->execute() to run the prepared statement.
Next, we use $stmt->num_rows to check if a row is returned.
Conclusion
To check if a row exists in MySQL and PHP, we can run a prepared statement.
