Question

我使用moodle和函数get_course_students来获取学生列表

$students = get_course_students($course->id, 'lastname'); 
echo print_r($students);

输出：

Array (
  [4382] => stdClass Object (
    [confirmed] => 1 
  , [username] => test22 
  , [firstname] => test 
  , [lastname] => 22 
  , [maildisplay] => 2 
  , [mailformat] => 1 
  , [maildigest] => 0 
  , [email] => test22@test.couk 
  , [city] => test 
  , [country] => GB 
  , [picture] => 1 
  , [idnumber] => 
  , [department] => 
  , [institution] => 
  , [emailstop] => 0 
  , [lang] => en_utf8 
  , [timezone] => 99 
  , [lastaccess] => 
  , [id] => 4382 )
  [518] => stdClass Object (
  , [confirmed] => 1 
  , [username] => st999999 
  , [firstname] => st999999 
  , [lastname] => account 
  , [maildisplay] => 2 
  , [mailformat] => 1 
  , [maildigest] => 0 
  , [email] => st999999@test.co.uk 
  , [city] => 
  , [country] => GB 
  , [picture] => 1 
  , [idnumber] => 
  , [department] => 
  , [institution] => 
  , [emailstop] => 0 
  , [lang] => en_utf8 
  , [timezone] => 99 
  , [lastaccess] => 1315843176 
  , [id] => 518
  )
)

然后，我想计算一个表中的记录数量，但只计算当前分配给该课程的学生。

$totalreportscountrecords = count_records_sql("SELECT COUNT(*) FROM mdl_ilp_reports WHERE course = $course->id AND user = $students");

如何修改SQL语句来执行此操作？任何帮助将不胜感激。

Answer 1

我猜，你正在使用自定义表。我在Moodle-1.9或Moodle-2.0中找不到表名* _reports。

但是，这是一个可能的解决方案：

如果get_course_students为您提供用户ID，则可以使用

WHERE course = $course->id AND user IN (555,556)

如果get_course_students返回一组值，您可以使用PHP的implode来获取逗号分隔的userid列表。

希望这有帮助。

moodle：来自stdclass对象的SQL where子句

1 个答案: