我目前正在使用PHP在儀表板上工作。我需要從SQLyog中的數據庫中獲取數據,並將其轉換爲圖形。問題是我不斷收到這個錯誤;致命錯誤:在類編碼的第30行調用未定義的方法MDB2_Error :: execute()。錯誤是在$res = $query->execute($data);
有人可以幫我編碼嗎?致命錯誤:調用第30行(SQLyog)上的未定義方法MDB2_Error :: execute()
這裏是類的代碼。
<?php
class fetch_ranking extends MDB2{
var $con;
var $tbl_user;
var $tbl_isi_scopus_webo;
function fetch_ranking ($dsn) {
$this->con =& MDB2::singleton($dsn, $options=null);
//echo $this->con->getMessage();
if (PEAR::isError($this->con)) {
die($this->con->getMessage());
}
$this->tbl_user = 'user';
$this->tbl_isi_scopus_webo = 'ISI_SCOPUS_WEBO';
}
function fetch_webojuly16(){
$types = array();
$sql = "select university, criteria_rank as presence
from isi_scopus_webo
where month='july'
and year='2016'
group by university" ;
$query = $this->con->prepare($sql,$types,MDB2_PREPARE_RESULT);
$data = array();
$res = $query->execute($data);
if (PEAR::isError($res)) {
die($res->getMessage());
}
$this->con->setFetchMode(MDB2_FETCHMODE_ASSOC);
$valrec = $res->fetchAll();
return $valrec;
}
}?>
這是圖表。
<?php
require_once($_SERVER['DOCUMENT_ROOT'].'/config/siteconf.php');
require_once($basehome.'/config/default.php');
require_once($basedir.'/mod/ppsg/dsn.php');
require_once($basehome.'/mod/ppsg/class/fetch_data_from_db_isi_scopus_webo.php');
$current_year = date('Y', strtotime(date('Y')));
//$fhObj = new fetch_ranking($ranking);
$hostname="192.168.111.55";
$username="devopt";
$password="G0devopt$";
$dbname="ranking";
//Connect to the database
$connection = mysql_connect($hostname, $username, $password)
or die("Unable to connect to MySQL");
echo "Connected to MySQL<br>";
mysql_select_db($dbname, $connection)
or die("Could not select examples");
$xdata=array();
$ydata=array();
$xdata['name'] = 'PRESENCE';
$ydata['name'] = 'UNIVERSITY';
$ydata['color'] = '#ABEBC6';
//Call to a member function fetch_webojuly16() on a non-object
$webojuly16 = $fhObj->fetch_webojuly16();
foreach($webojuly16 as $wj16){
$xdata['data'][] = $wj16['presence'];
$ydata['data'][] = $wj16['university'];
}
$json_arr = array($xdata,$ydata);
print json_encode($json_arr, JSON_NUMERIC_CHECK);
?>
哪一行導致錯誤? –
第35行。關於圖表代碼 – Anis
您應該粘貼所有代碼,而不是發佈屏幕截圖。 –