$this->db->where('teacher_name_1 IS NOT NULL', NULL, FALSE);
$this->db->where('course_id', $course_id);
$this->db->update('tbl_course_choice', $teacher_name_2);
$this->db->where('teacher_name_2 IS NOT NULL', NULL, FALSE);
$this->db->where('course_id', $course_id);
$this->db->update('tbl_course_choice', $teacher_name_3);
$this->db->where('teacher_name_3 IS NOT NULL', NULL, FALSE);
$this->db->where('course_id', $course_id);
$this->db->update('tbl_course_choice', $teacher_name_4);
$this->db->where('teacher_name_4 IS NOT NULL', NULL, FALSE);
$this->db->where('course_id', $course_id);
$this->db->update('tbl_course_choice', $teacher_name_5);
$this->db->where('teacher_name_5 IS NOT NULL', NULL, FALSE);
$this->db->where('course_id', $course_id);
$this->db->update('tbl_course_choice', $teacher_name_6);
我如何才能将此代码放入 if elseif
语句中。我尝试了多种方法,但都失败了。
示例:
if ($this->db->where('teacher_name_1 IS NOT NULL', NULL, FALSE)) {
$this->db->where('course_id', $course_id);
$this->db->update('tbl_course_choice', $teacher_name_2);
}
elseif ($this->db->where('teacher_name_2 IS NOT NULL', NULL, FALSE)) {
$this->db->where('course_id', $course_id);
$this->db->update('tbl_course_choice', $teacher_name_3);
}
elseif ($this->db->where('teacher_name_3 IS NOT NULL', NULL, FALSE)) {
$this->db->where('course_id', $course_id);
$this->db->update('tbl_course_choice', $teacher_name_4);
}
elseif ($this->db->where('teacher_name_4 IS NOT NULL', NULL, FALSE)) {
$this->db->where('course_id', $course_id);
$this->db->update('tbl_course_choice', $teacher_name_5);
}
elseif ($this->db->where('teacher_name_5 IS NOT NULL', NULL, FALSE)) {
$this->db->where('course_id', $course_id);
$this->db->update('tbl_course_choice', $teacher_name_6);
}
else {
$this->db->where('course_id', $course_id);
$this->db->update('tbl_course_choice', $teacher_name_1);
}
怎么了?请帮我弄清楚。谢谢
编辑 我的完整 Controller 经过一些修改,但仍然无法工作..
$user_name = $this->the_user->username;
$course_id = $this->input->post('course_id');
$course_code = $this->input->post('course_code');
$course_title = $this->input->post('course_title');
$credit_hours = $this->input->post('credit_hours');
$contact_hours = $this->input->post('contact_hours');
$section = $this->input->post('section');
$teacher = $this->input->post('teacher');
$course_type = $this->input->post('course_typ');
$pre_requisite = $this->input->post('pre_requisit');
$year = $this->input->post('yea');
$semester = $this->input->post('semeste');
$teacher_name_1 = $user_name;
$offering_year = $this->input->post('offering_year');
$offering_session = $this->input->post('offering_session');
$ql = $this->db->select('course_id')->from('tbl_course_choice')->where('course_id',$course_id)->get();
if( $ql->num_rows() > 0 ) {
$teacher_name_1 = array(
'teacher_name_1' => 'mehdi hasan 1'
);
$teacher_name_2 = array(
'teacher_name_2' => 'mehdi hasan 2'
);
$teacher_name_3 = array(
'teacher_name_3' => 'mehdi hasan three'
);
$teacher_name_4 = array(
'teacher_name_4' => 'mehdi hasan four'
);
$teacher_name_5 = array(
'teacher_name_5' => 'mehdi hasan 5'
);
$teacher_name_6 = array(
'teacher_name_6' => 'mehdi hasan 6'
);
$this->db->where('teacher_name_1 != ', '');
$this->db->where('course_id', $course_id);
$query_2 = $this->db->get('tbl_course_choice');
$teacher_2_count = $query_2->num_rows();
$this->db->where('teacher_name_2 != ', '');
$this->db->where('course_id', $course_id);
$query_3 = $this->db->get('tbl_course_choice');
$teacher_3_count = $query_3->num_rows();
$this->db->where('teacher_name_3 != ', '');
$this->db->where('course_id', $course_id);
$query_4 = $this->db->get('tbl_course_choice');
$teacher_4_count = $query_4->num_rows();
$this->db->where('teacher_name_4 != ', '');
$this->db->where('course_id', $course_id);
$query_5 = $this->db->get('tbl_course_choice');
$teacher_5_count = $query_5->num_rows();
$this->db->where('teacher_name_5 != ', '');
$this->db->where('course_id', $course_id);
$query_6 = $this->db->get('tbl_course_choice');
$teacher_6_count = $query_6->num_rows();
if ($teacher_2_count > 0 ) {
$this->db->where('course_id', $course_id);
$this->db->update('tbl_course_choice', $teacher_name_2);
} elseif ($teacher_3_count > 0 ) {
$this->db->where('course_id', $course_id);
$this->db->update('tbl_course_choice', $teacher_name_3);
} elseif ($teacher_4_count > 0 ) {
$this->db->where('course_id', $course_id);
$this->db->update('tbl_course_choice', $teacher_name_4);
} elseif ($teacher_5_count > 0 ) {
$this->db->where('course_id', $course_id);
$this->db->update('tbl_course_choice', $teacher_name_5);
} elseif ($teacher_6_count > 0 ) {
$this->db->where('course_id', $course_id);
$this->db->update('tbl_course_choice', $teacher_name_6);
} else {
$this->db->where('course_id', $course_id);
$this->db->update('tbl_course_choice', $teacher_name_1);
}
} else {
$a = array(
'course_id' => $course_id,
'course_code' => $course_code,
'course_title' => $course_title,
'course_type' => $course_type,
'credit_hours' => $credit_hours,
'contact_hours' => $contact_hours,
'section' => $section,
'teacher' => $teacher,
'pre_requisite' => $pre_requisite,
'year' => $year,
'semester' => $semester,
'offering_year' => $offering_year,
'offering_session' => $offering_session,
'teacher_name_1' => $teacher_name_1
);
$this->db->insert('tbl_course_choice', $a);
}
最佳答案
使用此代码
$this->db->where('teacher_name_2 != ', '');
$this->db->where('course_id', $course_id);
$query_2 = $this->db->get('tbl_course_choice');
$teacher_2_count = $query_2->num_rows();
$this->db->where('teacher_name_3 != ', '');
$this->db->where('course_id', $course_id);
$query_3 = $this->db->get('tbl_course_choice');
$teacher_3_count = $query_3->num_rows();
$this->db->where('teacher_name_4 != ', '');
$this->db->where('course_id', $course_id);
$query_4 = $this->db->get('tbl_course_choice');
$teacher_4_count = $query_4->num_rows();
$this->db->where('teacher_name_5 != ', '');
$this->db->where('course_id', $course_id);
$query_5 = $this->db->get('tbl_course_choice');
$teacher_5_count = $query_5->num_rows();
$this->db->where('teacher_name_6 != ', '');
$this->db->where('course_id', $course_id);
$query_6 = $this->db->get('tbl_course_choice');
$teacher_6_count = $query_6->num_rows();
if ($teacher_2_count > 0 ) {
$this->db->where('course_id', $course_id);
$this->db->update('tbl_course_choice', $teacher_name_2);
} elseif ($teacher_3_count > 0 ) {
$this->db->where('course_id', $course_id);
$this->db->update('tbl_course_choice', $teacher_name_3);
} elseif ($teacher_4_count > 0 ) {
$this->db->where('course_id', $course_id);
$this->db->update('tbl_course_choice', $teacher_name_4);
} elseif ($teacher_5_count > 0 ) {
$this->db->where('course_id', $course_id);
$this->db->update('tbl_course_choice', $teacher_name_5);
} elseif ($teacher_6_count > 0 ) {
$this->db->where('course_id', $course_id);
$this->db->update('tbl_course_choice', $teacher_name_6);
} else {
$this->db->where('course_id', $course_id);
$this->db->update('tbl_course_choice', $teacher_name_1);
}
}
关于php - 如何将codeigniter事件记录放入if elseif语句中,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/22680385/