php动态绑定变量的用法

本文实例讲述了php动态绑定变量的用法。分享给大家供大家参考。具体如下：

private function bindVars($stmt,$params) {  if ($params != null) {    $types = ''; //initial sting with types    foreach($params as $param) { //for each element, determine type and add      if(is_int($param)) {        $types .= 'i'; //integer      } elseif (is_float($param)) {        $types .= 'd'; //double      } elseif (is_string($param)) {        $types .= 's'; //string      } else {        $types .= 'b'; //blob and unknown      }    }    $bind_names[] = $types; //first param needed is the type string // eg: 'issss'    for ($i=0; $i<count($params);$i++) { //go through incoming params and added em to array      $bind_name = 'bind' . $i;   //give them an arbitrary name      $$bind_name = $params[$i];   //add the parameter to the variable variable      $bind_names[] = &$$bind_name;   //now associate the variable as an element in an array    }    //call the function bind_param with dynamic params    call_user_func_array(array($stmt,'bind_param'),$bind_names);  }  return $stmt; //return the bound statement

希望本文所述对大家的php程序设计有所帮助。