Separar cadena en multiples secciones para crear filtro

[Alexis88]

A ver, de la forma en que te expliqué en la respuesta anterior, separas esa query string y obtienes cada dato para poder aplicarlo en la sentencia SQL, de modo que solamente te queda insertar los valores.

Código PHP:

$filter = "select_time=1&grade1=1&grade2=2&grade3=3&genre5=5&genre19=19&language0=0";
 
$array1 = explode("&", $filter);
$array2 = array();
 
foreach ($array1 as $cadena){
    $clave = substr($cadena, 0, strpos($cadena, "=") - 1);
    $valor = substr($cadena, strpos($cadena, "=") + 1);
    $array2[$clave] = $valor;
}
 
$select_time = $array2["select_time"];
$grade1 = $array2["grade1"];
$grade2 = $array2["grade2"];
$grade3 = $array2["grade3"];
$genre = $array2["genre5"];
$genre1 = $array2["genre19"];
$language = $array2["language0"];
 
$query_movies = "SELECT * FROM tblmovies 
                 WHERE 
                     (tblmovies.grade = $grade1 OR tblmovies.grade = $grade2 OR tblmovies.grade = $grade3)
                 AND (tblmovies.genre = $genre OR tblmovies.genre = $genre1)
                 AND tblmovies.language = $language 
                 AND tblmovies.select_time = $select_time";
 

Inténtalo así y nos dices cómo te fue, saludos.