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：privatefunctionbin

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。