mysqli::next_result

mysqli_next_result

(PHP 5, PHP 7, PHP 8)

mysqli::next_result -- mysqli_next_resultBereitet das nächste Ergebnis von multi_query vor

Beschreibung

Objektorientierter Stil

public mysqli::next_result(): bool

Prozeduraler Stil

mysqli_next_result(mysqli $mysql): bool

Bereitet die nächste Ergebnismenge aus einem vorherigen Aufruf von mysqli_multi_query() vor, die dann durch die Funktionen mysqli_store_result() oder mysqli_use_result() abgerufen werden kann.

Parameter-Liste

mysql

Nur bei prozeduralem Aufruf: ein von mysqli_connect() oder mysqli_init() zurückgegebenes mysqli-Objekt.

Rückgabewerte

Gibt bei Erfolg true zurück. Bei einem Fehler wird false zurückgegeben. Gibt im Gegensatz zu mysqli_more_results() auch false zurück, wenn die nächste Anweisung zu einem Fehler führte.

Beispiele

Siehe mysqli_multi_query().

Siehe auch

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User Contributed Notes 2 notes

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1
admin at travian-utils dot com
13 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
14 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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