Question

Hey guys i want to use two arrays in on mysql UPDATE query. So here is what i have:

For example:

$ergebnis:
Array ( [0] => 100 [1] => 200 [2] => 15 )


$Index:
Array ( [0] => 3 [1] => 8 [2] => 11 )

And this is what i tried:

UPDATE `lm_Artikel` 
SET Bestand='".$ergebnis."' 
WHERE `Index` = '".$Index."'

This query seems not to work. I don’t know why i enabled php error reporting and there are no errors and when i run the query it doesn’t change anything in my database. Can anyone see what i did wrong?

Answer 1

You need to do it for each element of your arrays, hence, you can use the foreach() function:

foreach($ergebnis as $key => $value){
    $sql = "UPDATE lm_Artikel SET Bestand='".$value."' WHERE `Index` = '".$Index[$key]."'";
    mysqli_query($sql);
}

P.S. There could well be a pure-sql alternative but I’m not too SQL-hot, so I’ll leave it to someone who has more expertise.

Also, please note that it may be easier for you to set the index as the array keys:

$ergebnis = Array(3=>100, 8=>200, 11=>15);

And then the foreach() would look a little better:

foreach($ergebnis as $key => $value){
    $sql = "UPDATE lm_Artikel SET Bestand='".$value."' WHERE `Index` = '".$key."'";
    mysqli_query($sql);
}