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    mysqli::next_result

    mysqli_next_result

    (PHP 5, PHP 7, PHP 8)

    mysqli::next_result -- mysqli_next_result — 为读取 multi_query 执行之后的下一个结果集做准备

    说明

    面向对象风格

    public mysqli::next_result(): bool

    过程化风格

    mysqli_next_result(mysqli $mysql): bool

    mysqli_multi_query() 函数执行之后，为读取下一个结果集做准备，然后可以使用 mysqli_store_result() 或 mysqli_use_result() 检索。

    参数

    mysql

    仅以过程化样式：由 mysqli_connect() 或 mysqli_init() 返回的 mysqli 对象。

    返回值

    成功时返回 true， 或者在失败时返回 false。如果下一条语句导致错误，也返回 false，这跟 mysqli_more_results() 不同。

    错误／异常

    If mysqli error reporting is enabled (MYSQLI_REPORT_ERROR) and the requested operation fails, a warning is generated. If, in addition, the mode is set to MYSQLI_REPORT_STRICT, a mysqli_sql_exception is thrown instead.

    示例

    参阅 mysqli_multi_query()。

    参见

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    User Contributed Notes 2 notes

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    3
    admin at travian-utils dot com
    15 years ago
    Stored procedures few rowset example:

    some_file.php
    <?php
    function proc() {
      global     $global;
          $db_connect_list = array('site');
          SQLinit($db_connect_list);
      if(isset(    $global['error'])){return;}
          SQL('CALL `procedure`();');
      while(    $row=mysqli_fetch_assoc($global['result'])){
            // do some
          }
          SQLnext();
      while(    $row=mysqli_fetch_assoc($global['result'])){
            // do some
          }
          SQLnext();
      while(    $row=mysqli_fetch_assoc($global['result'])){
            // do some
          }
          SQLclose($db_connect_list);
    }
    ?>

    config.php
    <?php
      $global    ['sys']['db']['site'] = array('host'=>'localhost', 'user'=>'site', 'pass'=>'');
    ?>

    engine.php
    <?php
    function SQLinit($array_list){
      global     $global;
      foreach(    $array_list as $set){
        if(!    $global['sys']['db'][$set]['connect'] = mysqli_connect(
                $global['sys']['db'][$set]['host'],
                $global['sys']['db'][$set]['user'],
                $global['sys']['db'][$set]['pass'])){
              $global['error']['code'] = 500;
              $global['error']['text'] = 'Database not avaliable';
              $w=fopen('error.log','a+');
              fwrite($w,'time: '.date('Y M d H:i:s')."\r\n");
              fwrite($w,'errno: '.mysqli_connect_errno()."\r\n");
              fwrite($w,'error: '.mysqli_connect_error()."\r\n");
              fclose($w);
          return;
        }
        if(!isset(    $global['sys']['default_connect']))
              $global['sys']['default_connect'] = $global['sys']['db'][$set]['connect'];
            SQL('SET NAMES \'utf8\' COLLATE \'utf8_unicode_ci\';', $global['sys']['db'][$set]['connect']);
            SQL('SET CHARACTER SET \'utf8\';', $global['sys']['db'][$set]['connect']);
            SQL('SET character_set_connection = \'utf8\';', $global['sys']['db'][$set]['connect']);
      }
    }
    function     mTime(){
      list(    $usec, $sec) = explode(" ", microtime());
      return ((float)    $usec+(float)$sec);
    }
    function     SQL($sql, $connect = -1){
      global     $global;
      if(    $connect === -1)$connect = $global['sys']['default_connect'];
      if(isset(    $global['error']['sql']))return;
      while (    $connect->next_result()) $connect->store_result();
          $begin=mTime();
          $global['result']=mysqli_query($connect, $sql);
          $end=mTime();
          $global['sys']['time_sql']+=$end-$begin;
          $error=mysqli_error($connect);
      if(    $error!=''){
            $global['error']['code'] = 502;
            $global['error']['text'] = 'SQL error';
            $global['error']['sql'] = true;
            $w=fopen('error.log','a+');
            fwrite($w,'time: '.date('Y M d H:i:s')."\r\n");
            fwrite($w,'errno: '.mysqli_errno($connect)."\r\n");
            fwrite($w,'error: '.$error."\r\n");
            fwrite($w,'sql: '.$sql."\r\n");
            fclose($w);
      }else{
            $w=fopen('sql.log','a+');
            fwrite($w,'time: '.date('Y M d H:i:s')."\r\n");
            fwrite($w,'sql: '.$sql."\r\n");
            fclose($w);
      }
    }

    function     SQLnext($connect = -1){
      global     $global;
      if(    $connect === -1)$connect = $global['sys']['default_connect'];
      if(isset(    $global['error']['sql']))return;
          $connect->next_result();
          $global['result'] = $connect->store_result();
    }

    function     SQLclose($array_list){
      global     $global;
      foreach(    $array_list as $set){
            mysqli_close($global['sys']['db'][$set]['connect']);
      }
    }
    ?>
    up
    0
    pawel dot barcik at gmail dot com
    16 years ago
    this function returns FALSE when you have an error in your syntax in one of your queries, so be carefull with this type of construction when tracking errors:

    <?php

    //error in the second sub query 
    $result = $db->multi_query("select * from news; seleeeeeeect id from news; update news set title='new title' where id= 12 ");

    //code inside object class
    $this->_db = new Mysqli($host, $user, $password, $database, $port, $socket);
           
    do {
            $result = $this->_db->store_result();
            $this->_resultMulti[] = $result;
            $this->_errnoMulti[] = $this->_db->errno;

        if(    is_object($result)) {
                $result->free_result();
        }
                   
    } while(    $this->_db->next_result());

    ?>

    in this construction all you have in the $this->_errnoMulti is :

    array(1) {
      [0]=>
      int(0)
    }

    which means that there are no errors if you are not checking how many queries are executed!
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