我想对有一定条件的单个学生人数求和。条件是，如果一名学生未通过任何一门课程，那么它将给我0值而不是他的任何数字的总和。使用此条件会给我错误的价值。现在我遇到了这些问题，我尝试了很多事情，但是没有用。在下面，我为您提供代码和输出以及所需的输出。
控制器：
if (!empty($examSchedule)) {
$new_array = array();
foreach ($studentList as $stu_key => $stu_value) {
$array = array();
$array['student_id'] = $stu_value['id'];
$array['admission_no'] = $stu_value['admission_no'];
$array['roll_no'] = $stu_value['roll_no'];
$array['firstname'] = $stu_value['firstname'];
$array['lastname'] = $stu_value['lastname'];
$array['dob'] = $stu_value['dob'];
$array['father_name'] = $stu_value['father_name'];
$x = array();
foreach ($examSchedule as $ex_key => $ex_value) {
$exam_array = array();
$exam_array['exam_schedule_id'] = $ex_value['id'];
$exam_array['exam_id'] = $ex_value['exam_id'];
$exam_array['subject_id'] = $ex_value['subject_id'];
$exam_array['full_marks'] = $ex_value['full_marks'];
$exam_array['passing_marks'] = $ex_value['passing_marks'];
$exam_array['exam_name'] = $ex_value['name'];
$exam_array['exam_type'] = $ex_value['type'];
$student_exam_result = $this->examresult_model->get_exam_result($ex_value['id'], $stu_value['id']);
$exam_array['attendence'] = $student_exam_result->attendence;
$exam_array['get_marks'] = $student_exam_result->get_marks;
$x[] = $exam_array;
}
$array['exam_array'] = $x;
$new_array[] = $array;
}
$data['examSchedule'] = $new_array;
}
if ($this->input->post('save_exam') == "save_exam") {
$ex_array = array();
$exam_id = $this->input->post('exam_id');
$student_array = $this->input->post('student');
$exam_array = $this->input->post('exam_schedule');
$total_marks = array();
foreach ($student_array as $key => $student) {
foreach ($examSchedule as $ex_key => $ex_value) {
foreach ($exam_array as $key => $exam) {
$record['get_marks'] = 0;
$record['attendence'] = "pre";
if ($this->input->post('student_absent' . $student . "_" . $exam) == "") {
$get_marks = $this->input->post('student_number' . $student . "_" . $exam);
$record['get_marks'] = $get_marks;
$passing_marks = $ex_value['passing_marks'];
if ($get_marks != '0' && $get_marks>=$passing_marks) {
$total_marks[$student] += $get_marks;
} else {
$total_marks[$student] = 0;
break;
}
} else {
$record['attendence'] = $this->input->post('student_absent' . $student . "_" . $exam);
}
$record['exam_schedule_id'] = $exam;
$record['student_id'] = $student;
$record['exam_id'] = $exam_id;
$inserted_id = $this->examresult_model->add_exam_result($record);
if ($inserted_id) {
$ex_array[$student] = $exam_id;
}
}
$total['total_mark'] = $total_marks[$student];
$total['exam_id'] = $this->input->post('exam_id');
$total['student_id'] = $student;
$total['class_id'] = $class_id;
$total['section_id'] = $section_id;
$total['year'] = date("Y");
$total_mark = $this->examresult_model->add_total_result($total);
}
echo "<pre>";
print_r( $total['total_mark']);
}
exit();
if (!empty($ex_array)) {
$this->mailsmsconf->mailsms('exam_result', $ex_array, NULL, $exam_array);
}
redirect('admin/mark');
}
输出（我得到）：
3213
3171
1248
2989
4291
0
0
0
0
0
0
0
0
输出（我想要）：
459
453
416
0 //(427 is the sum but one subject fail thatswhy it sum zero)
613
0
0
0
0
0
0
0
0
student_array的值（这些都是学生ID）：
Array(
[0] => 110
[1] => 111
[2] => 120
[3] => 121
[4] => 112
[5] => 113
[6] => 114
[7] => 122
[8] => 115
[9] => 116
[10] => 117
[11] => 118
[12] => 119
)
exam_array的值：
Array
(
[0] => 84
[1] => 85
[2] => 86
[3] => 87
[4] => 88
[5] => 89
[6] => 90
)
examSchedule的值：
Array
(
[0] => Array
(
[student_id] => 110
[admission_no] => 01
[roll_no] => 01
[firstname] => Md. Abdur
[lastname] => Rahaman
[dob] => 2015-05-12
[father_name] => Sowpan Chow
[exam_array] => Array
(
[0] => Array
(
[exam_schedule_id] => 84
[exam_id] => 7
[subject_id] => 4
[full_marks] => 100
[passing_marks] => 33
[exam_name] => Bangla
[exam_type] => Theory
[attendence] => pre
[get_marks] => 75.00
)
[1] => Array
(
[exam_schedule_id] => 85
[exam_id] => 7
[subject_id] => 1
[full_marks] => 100
[passing_marks] => 33
[exam_name] => English
[exam_type] => Theory
[attendence] => pre
[get_marks] => 82.00
)
[2] => Array
(
[exam_schedule_id] => 86
[exam_id] => 7
[subject_id] => 2
[full_marks] => 100
[passing_marks] => 33
[exam_name] => Math
[exam_type] => Theory
[attendence] => pre
[get_marks] => 88.00
)
[3] => Array
(
[exam_schedule_id] => 87
[exam_id] => 7
[subject_id] => 3
[full_marks] => 100
[passing_marks] => 33
[exam_name] => Religion
[exam_type] => Theory
[attendence] => pre
[get_marks] => 87.00
)
[4] => Array
(
[exam_schedule_id] => 88
[exam_id] => 7
[subject_id] => 10
[full_marks] => 50
[passing_marks] => 16
[exam_name] => Art & Craft
[exam_type] => Theory
[attendence] => pre
[get_marks] => 45.00
)
[5] => Array
(
[exam_schedule_id] => 89
[exam_id] => 7
[subject_id] => 9
[full_marks] => 50
[passing_marks] => 16
[exam_name] => General Knowledge
[exam_type] => Theory
[attendence] => pre
[get_marks] => 42.00
)
[6] => Array
(
[exam_schedule_id] => 90
[exam_id] => 7
[subject_id] => 11
[full_marks] => 50
[passing_marks] => 16
[exam_name] => Computer
[exam_type] => Theory
[attendence] => pre
[get_marks] => 40.00
)
)
)
[1] => Array
(
#value
)
[2] => Array
(
#value
)
[3] => Array
(
#value
)
[4] => Array
(
#value
)
[5] => Array
(
#value
)..
[12] => Array
(
#value
)
答案 0 :(得分：0)
您可以进行单独的foreach循环以获取单个学生的全部成绩，然后在进行通过分数验证/添加之前检查其是否包含任何0成绩：
if ($this->input->post('save_exam') == "save_exam") {
$ex_array = array();
$exam_id = $this->input->post('exam_id');
$student_array = $this->input->post('student');
$exam_array = $this->input->post('exam_schedule');
$total_marks = array();
foreach ($student_array as $key => $student) {
// check if current student having 0 mark
$student_mark = [];
foreach ($exam_array as $key => $exam) {
$student_mark[$student][] = $this->input->post('student_number' . $student . "_" . $exam);
}
$zero_mark_flag = in_array(0, $student_mark[$student], true) ? true : false; // return true if contains 0 mark
foreach ($examSchedule as $ex_key => $ex_value) {
foreach ($exam_array as $key => $exam) {
$record['get_marks'] = 0;
$record['attendence'] = "pre";
if ($this->input->post('student_absent' . $student . "_" . $exam) == "") {
$get_marks = $this->input->post('student_number' . $student . "_" . $exam);
$record['get_marks'] = $get_marks;
$passing_marks = $ex_value['passing_marks'];
// there are 0 on one or more student marks, so skip the mark addition
if ($zero_mark_flag === true) {
$total_marks[$student] = 0;
break;
} else if ($get_marks != '0' && $get_marks>=$passing_marks) {
$total_marks[$student] += $get_marks;
}
} else {
$record['attendence'] = $this->input->post('student_absent' . $student . "_" . $exam);
}
$record['exam_schedule_id'] = $exam;
$record['student_id'] = $student;
$record['exam_id'] = $exam_id;
$inserted_id = $this->examresult_model->add_exam_result($record);
if ($inserted_id) {
$ex_array[$student] = $exam_id;
}
}
$total['total_mark'] = $total_marks[$student];
$total['exam_id'] = $this->input->post('exam_id');
$total['student_id'] = $student;
$total['class_id'] = $class_id;
$total['section_id'] = $section_id;
$total['year'] = date("Y");
$total_mark = $this->examresult_model->add_total_result($total);
}
echo "<pre>";
print_r( $total['total_mark']);
}
exit();
if (!empty($ex_array)) {
$this->mailsmsconf->mailsms('exam_result', $ex_array, NULL, $exam_array);
}
redirect('admin/mark');
}
因此，学生分数将始终设置为0。