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MySQLi query in PHP isn't working right, is there a way to get the exact query?


MySQLi query in PHP isn't working right, is there a way to get the exact query?

By : Sonal S
Date : October 15 2020, 11:12 PM
To fix the issue you can do You're using the SQL reserved word "group" as one of the column names.
code :


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PHP mysqli query isnt working

PHP mysqli query isnt working


By : Cameron Small
Date : March 29 2020, 07:55 AM
Hope that helps when the user enters their details they click on login but its not working, my connection to the database is fine its this file that is not working, any help would be appreciated, thanks
code :
<?php

include '../connection.php'; //used to include connection file that is 1 level higher in the directory 

$username = $_REQUEST['username'];
$password = $_REQUEST['password'];

$query = 'SELECT Username FROM login WHERE Username = ? AND Password = ?';

/* set a default value to check against */
$valid_user = '';

/* use prepared statement */
$stmt = mysqli_stmt_init($dbc);
if (mysqli_stmt_prepare($stmt, $query)) {
    /* set question marks equal to values */
    mysqli_stmt_bind_param($stmt, 'ss', $username, $password);
    mysqli_stmt_execute($stmt);

    /* get the valid username only if query is successful */
    mysqli_stmt_bind_result($stmt, $valid_user);
    mysqli_stmt_fetch($stmt);

    /* close the statment */
    mysqli_stmt_close($stmt);
}


/* check if default was overwritten */
if($valid_user != '') {
    echo 'username and password correct';
}
?>
why isnt my mysqli query returning any rows

why isnt my mysqli query returning any rows


By : Vinh Pham
Date : March 29 2020, 07:55 AM
I hope this helps . You should really switch to prepared statements instead of injecting your variables directly in the query, but you problem is caused by mysqli_real_escape_string(). That function needs two parameters, the first one being the mysqli connection.
mysqli - how to get exact ($i) raw field from query

mysqli - how to get exact ($i) raw field from query


By : Expectator
Date : March 29 2020, 07:55 AM
like below fixes the issue Need to receive data of fields from $i raw of mysqli object.
code :
$raw = [];
$sql = "SELECT mood,count(mood) as number FROM em_mood GROUP by mood";
$res = $mysqli->query($sql);
while ($obj = $res->fetch_object())
{
    $raw[$obj->mood] = $obj->number;
}
for ($i = 1; $i <= 10; $i++){
    if (isset($raw[$i])) {
        $mood_result .= "<div class='chart'>$i - $raw[$i]</div>";
    } else {
        $mood_result .= "<div class='chart'>empty</div>";
    }
}
MySQLi- How to return total number of exact matches in a query?

MySQLi- How to return total number of exact matches in a query?


By : David Scotti
Date : March 29 2020, 07:55 AM
Does that help You need to group by the columns that define the "exact match" : in your case "Item", "Color" and "Size"
Try something like this :
code :
SELECT
    COUNT(*) as Qty,
    Item,
    Color,
    Size
FROM [YOUR_TABLE_NAME]
GROUP BY Item, Color, Size
My SQL UPDATE query in ASP.net Isnt working

My SQL UPDATE query in ASP.net Isnt working


By : Terra Adopt
Date : March 29 2020, 07:55 AM
To fix this issue First, Always use parameterized queries, otherwise you are risking Sql injection attacks.
Second, your cmd.Dispose(); is called before your cmd.ExecuteNonQuery();. You should get an exception.
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