Binding parameters and binding results does not return item - PHP MySql
In my view this could work (PDO not MySQLi): function get_stock_level($device) { GLOBAL $db; $sql = 'SELECT in_stock FROM stock WHERE device = :device'; $stmt = $db->prepare($sql); $stmt->bindValue(':device', $device,PDO::PARAM_STR); $stmt->execute(); $stock = $stmt->fetch(); return $stock; } I used prepare this way, you can store the result directly into a new...
F# wrapping statements in a do block
f#,functional-programming,conventions,statements
Since it's not really "natural" to work with statements in functional programming, we explicitly wrap the statements in a do block to show that they are side-effects. I agree with you. However, if you look into F# code in the wild, they tend to be loose in that matter....
MySQL Statements
You can do it like this: INSERT INTO tbltable (ROW) SELECT DISTINCT "Value1" FROM tbltable WHERE ROW = "Hello" HAVING COUNT(*) > 1 ...
Java JDBC/SQLite: Export tables to sql statements
To achieve that, you can use outer software, such as SQLDeveloper or SQLAdministrator. IntelliJ in Ultimate edition also supports exporting table data. UPDATE: If you want to export it using only sql you can use sqlite3 db .dump See also this info if you want to export only selected tables....
What is wrong with for loop syntax?
java,loops,for-loop,statements
It is not allowed because the declaration of PlayingCard currentCard has no scope if you don't wrap it with braces. BTW, if you want your loop to do something, you should probably change the condition to currentCardNumber < 51;...
How to get the right variable to get the right user logged in? [closed]
You are doing a mix of ->bind_param() and bind_result(). You only need the 1 param ($user_roll) in ->bind_param(), and the others will be used in ->bind_result() after your ->execute(), for example - $user_roll = $_SESSION['roll']; $stmt = $conn->prepare("SELECT roll, name, course, semester FROM students WHERE roll = ?"); $stmt->bind_param('i',$user_roll); $stmt->execute();...
Mysqli prepared statements register
php,mysqli,fetch,statements,close
UPDATED: more logical statement $result = $mysqli->prepare("SELECT username FROM user WHERE username=?"); $result->bind_param("s", $username); $result->execute(); $found = $result->fetch(); $result->close(); if ($found){ echo "User already exists!"; } else { $register = $mysqli->prepare("INSERT INTO user (username, password, email, rr, rank) VALUES (?, ?, ?, ?, ?)"); $register->bind_param("sssii", $username, $kode, $email, $rr, $rank);...
SQL Alter an value from 1 to 0
You have to use the UPDATE command to update the rows already in the database. That UPDATE command execute against some key for eaxmple in your example that is ID. The UPDATE Command syntax will be like this:- UPDATE tablename SET columnWhichNeedsTObeUpdated = newValueforColumn WHERE KeyColumn = KeyColumnIdentifierValue For eaxmple...
What is the Continue Statements in C++? [closed]
It means that execution should continue with the next iteration of whatever loop the continue statement is inside of (if you have nested loops, the inner-most one that the statement is inside of). For one example, consider something that walks through directory entries, but ignores hidden files (which, for the...
Is class member declaration not a statement?
c#,declaration,terminology,statements
declaration statement can be seen as a subset of declaration. Eventually declaration statement is the intersection of statement and declaration. Now concerning members, you have to know which kind of member you are dealing with. For class you have class member declaration etc... By reading your comment I think you...
Multiple if statements for multiple variables
php,html,forms,if-statement,statements
Try this if (isset($_POST["levelName"])){ if($_POST["levelName"] != ""){ $txt = $levelname . $_POST["levelName"] . "\n"; fwrite($myfile, $txt); } else { $txt = "level-name=NO_NAME_GIVEN"; fwrite($myfile, $txt); } }//submit close ...
nested if statement in C# [closed]
You've got a bunch of problems You are missing an else before the 'C' and 'F' branches. Currently, all positive grades will become 'F's else if (percent >= .7) { grades = "C"; } And again else if (percent >= .0) { grades = "F"; } You are then overwriting...
How to read and compare strings in Java? [closed]
java,string,compare,statements
Replace this line: String figura = scan.nextLine();with String figura = scan.next();and your program will work: see image below Also see here the difference between Scanner.next() and Scanner.nextLine()...
Structuring if statements properly
Replace: double medium_total = base - medium/100 * base; with double medium_total = base - medium/100.0 * base; medium is an int which means that medium / 100 is an integer division. By changing 100 to 100.0 a floating point division will be performed. Same for large_total declaration....
MySQL prepared statements syntax
I think I found it, it's: "INSERT INTO users set email=:email, pass=:pass", ['email'=>$email,'pass'=>$pass] and it should be save query (SQL injectionс-proof), correct me if I'm wrong....
WordPress If statement Feature Image
wordpress,image,if-statement,statements,featured
In this case you just need to use the if statement on whether or not to show the whole style tag or not. It's cleaner to add these sort of things to your functions.php file though so if you add this there: function alternative_bg_img() { global $post; if (has_post_thumbnail()) {...
Can I have two initializing statements in a “for” loop? [duplicate]
No, you can only have one initializing statement. However, frequently you can use the comma operator to achieve the desired result: for(int foo = 7, bar = 42; ...; ...) { ... } or even int foo; double bar; for(foo = 7, bar = 42; ...; ...) { ... }...
if and else statement in laravel 4
php,if-statement,laravel,boolean,statements
This is probably a Laravel issue, it is a PHP issue. If the $result variable has a value, it will return the value. If it doesn't, it will return 0. If you want to test if the $result variable has a value or not, you better use the isset() function...