Esto es lo que uso para hacer mysqli preparado estados con una cantidad variable de params. Es parte de una clase que escribí. Es exageradamente exagerado para lo que necesita, pero debe mostrarle la dirección correcta.
public function __construct($con, $query){
$this->con = $con;
$this->query = $query;
parent::__construct($con, $query);
//We check for errors:
if($this->con->error) throw new Exception($this->con->error);
}
protected static $allowed = array('d', 'i', 's', 'b'); //allowed types
protected static function mysqliContentType($value) {
if(is_string($value)) $type = 's';
elseif(is_float($value)) $type = 'd';
elseif(is_int($value)) $type = 'i';
else throw new Exception("type of '$value' is not string, int or float");
return $type;
}
//This function checks if a given string is an allowed mysqli content type for prepared statement (s, d, b, or i)
protected static function mysqliAllowedContentType($s){
return in_array($s, self::$allowed);
}
public function feed($params){
//These should all be empty in case this gets used multiple times
$this->paramArgs = array();
$this->typestring = '';
$this->params = $params;
$this->paramArgs[0] = '';
$i = 0;
foreach($this->params as $value){
//We check the type:
if(is_array($value)){
$temp = array_keys($value);
$type = $temp[0];
$this->params[$i] = $value[$type];
if(!self::mysqliAllowedContentType($type)){
$type = self::mysqliContentType($value[$type]);
}
}
else{
$type = self::mysqliContentType($value);
}
$this->typestring .= $type;
//We build the array of values we pass to the bind_params function
//We add a refrence to the value of the array to the array we will pass to the call_user_func_array function. Thus say we have the following
//$this->params array:
//$this->params[0] = 'foo';
//$this->params[1] = 4;
//$this->paramArgs will become:
//$this->paramArgs[0] = 'si'; //Typestring
//$this->paramArgs[1] = &$this->params[0];
//$this->paramArgs[2] = &$this->params[1].
//Thus using call_user_func_array will call $this->bind_param() (which is inherented from the mysqli_stmt class) like this:
//$this->bind_param('si', &$this->params[0], &$this->params[1]);
$this->paramArgs[] = &$this->params[$i];
$i++;
}
unset($i);
$this->paramArgs[0] = $this->typestring;
return call_user_func_array(array(&$this, 'bind_param'), $this->paramArgs);
}
que lo utilice como esto:
$prep = new theClassAboveHere($mysqli, $query);
$prep->feed(array('string', 1, array('b', 'BLOB DATA'));
La clase debe extender la clase mysqli_stmt.
espero que esto le ayuda en la dirección correcta.
Si quieres, también podría publicar toda la clase, incluye enlaces de resultados variables.
@altCongnito hace 'array_insert() 'en realidad existe? –
Usted escribió '$ sql + =' en lugar de '$ sql. =' – pmrotule