[PHP] Flexi Login Class

PHP Code:

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<?php
    class Login{
        private $Table;
        private $Structure;
        
        function __construct($Table="", $Structure=""){
            $this->Table = ($Table) ? $Table : "accounts";
            $this->Structure = ($Structure) ? $Structure : Array("name", "password", "salt");
        }
        
        function __destruct(){
            unset($this->Table);
            unset($this->Structure);
            unset($this);
        }
        
        function Login($Username, $Password){
            global $MySQL;
            
            $Username = $MySQL->Escape($Username);
            $Password = $MySQL->Escape($Password);
            
            $MySQL->Query("SELECT `{$this->Structure['0']}`, `{$this->Structure['1']}`, `{$this->Structure['2']}` FROM `{$this->Table}` WHERE `{$this->Structure['0']}` = '{$Username}';");
            
            if($Row = $MySQL->Fetch_Array()){
                if((sha1($Password . $Row[$this->Structure['2']])) == $Row[$this->Structure['1']]){
                    return true;
                }
            }
            
            return false;
        }
    }
?>

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Password stored in database must be hashed with SHA-1.

It is flexible so it uses any table and any field names.