关于通过mysqli使用更新

Question

currently im so exhausted trying to figure why this function is not working as expected (inside a php class):

function actualizarPromos($nombre,$desc,$motivo,$id){
global $mysqli;
$sql="update promociones set nombre='".utf8_decode($nombre)."', desc='".utf8_decode($desc)."', motivo='".$motivo."' where id='".$id."'";
$mysqli->query($sql);
if($mysqli->insert_id>0){
            //It saved the data
    echo "Salvado";
}
else{
    //It didn't save the data   
        echo "No salvado";
    echo $mysqli->insert_id;
    echo "<br>".$sql;
}

}

I can´t get the function to update the contents of my db. I already tried to write de the SQL statement on phpmyadmin which is:

update promociones set nombre='cumple', desc='muy buen cumple', motivo='mCumple' where id='13';

And it doesn't execute at all. Anyone can help me out?. Thanks in advance!

Answer 1

desc is a Revered Word in MySQL, so your query is most likely failing. You need to escape it using the backtick - `

$sql="update promociones set nombre='".utf8_decode($nombre)."', `desc`='".utf8_decode($desc)."', motivo='".$motivo."' where id='".$id."'";