回答編集履歴
4
調整
answer
CHANGED
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@@ -90,11 +90,11 @@
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90
90
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<input type="checkbox" name="class[]" value="A">A
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91
91
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<input type="checkbox" name="class[]" value="B">B
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92
92
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<input type="checkbox" name="class[]" value="C">C<br>
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93
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-
<input type="checkbox" name =
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93
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+
<input type="checkbox" name ="subject[]" value = "janpanese">国語<br>
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94
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-
<input type="checkbox" name =
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94
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+
<input type="checkbox" name ="subject[]" value = "math">数学<br>
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95
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-
<input type="checkbox" name =
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95
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+
<input type="checkbox" name ="subject[]" value = "science">理科<br>
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96
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-
<input type="checkbox" name =
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96
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+
<input type="checkbox" name ="subject[]" value = "social">社会<br>
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97
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-
<input type="checkbox" name =
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97
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+
<input type="checkbox" name ="subject[]" value = "english">英語<br>
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98
98
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<input type="submit" name="search" value="検索"><br>
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99
99
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<input type="submit" name="back" value="戻る"><br>
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100
100
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</form>
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3
組み込み
answer
CHANGED
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@@ -43,4 +43,60 @@
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43
43
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<input type="submit" name="search" value="検索"><br>
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44
44
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<input type="submit" name="back" value="戻る"><br>
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45
45
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</form>
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46
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+
```
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47
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+
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48
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+
# 組み込み
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49
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+
一応ざっくり組み込んでみました
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50
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+
環境にあわせて調整してください
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51
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+
```PHP
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52
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+
<?PHP
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53
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+
$class=filter_input(INPUT_POST,"class",FILTER_DEFAULT,FILTER_REQUIRE_ARRAY);
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54
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+
$subject=filter_input(INPUT_POST,"subject",FILTER_DEFAULT,FILTER_REQUIRE_ARRAY);
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55
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+
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56
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+
$sql ="select students.name, classes.name FROM students ";
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57
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+
$sql.="JOIN classes ON students.class_id = classes.id ";
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58
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+
$sql.="JOIN scores ON students.id = scores.student_id ";
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59
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+
$sql.="WHERE 1 ";
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60
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+
$params=[];
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61
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+
$data=[];
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62
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+
if(!is_null($class)){
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63
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+
$sql.="and classes.name in (".implode(",",array_fill(0,count($class),"?")).") ";
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64
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+
if(!isset($params[0])) $params[0]="";
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65
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+
$params[0].=str_repeat( 's', count($class));
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66
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+
$data=array_merge($data,$class);
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67
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+
}
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68
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+
if(!is_null($subject)){
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69
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+
$sql.="and classes.name in (".implode(",",array_fill(0,count($subject),"?")).") ";
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70
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+
if(!isset($params[0])) $params[0]="";
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71
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+
$params[0].=str_repeat( 's', count($subject));
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72
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+
$data=array_merge($data,$subject);
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73
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+
}
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|
74
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+
print $sql;
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|
75
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+
print_r($params);
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76
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+
|
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77
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+
$mysqli = new mysqli("localhost", "myuser", "mypass", "mydb");
|
|
78
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+
$stmp=$mysqli->prepare($sql);
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|
79
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+
foreach ($data as $key=>$val){
|
|
80
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+
$params[] = &$data[$key];
|
|
81
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+
}
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82
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+
call_user_func_array([$stmt, 'bind_param'], $params);
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83
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+
$stmt->execute();
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84
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+
$res = $stmt->get_result();
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85
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+
$rows=$res->fetch_all(MYSQLI_ASSOC);
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86
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+
print_r($rows);
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87
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+
|
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88
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+
?>
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89
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+
<form method = "post">
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|
90
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+
<input type="checkbox" name="class[]" value="A">A
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|
91
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+
<input type="checkbox" name="class[]" value="B">B
|
|
92
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+
<input type="checkbox" name="class[]" value="C">C<br>
|
|
93
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+
<input type="checkbox" name = subject[] value = "janpanese">国語<br>
|
|
94
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+
<input type="checkbox" name = subject[] value = "math">数学<br>
|
|
95
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+
<input type="checkbox" name = subject[] value = "science">理科<br>
|
|
96
|
+
<input type="checkbox" name = subject[] value = "social">社会<br>
|
|
97
|
+
<input type="checkbox" name = subject[] value = "english">英語<br>
|
|
98
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+
<input type="submit" name="search" value="検索"><br>
|
|
99
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+
<input type="submit" name="back" value="戻る"><br>
|
|
100
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+
</form>
|
|
101
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+
|
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46
102
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```
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2
調整
answer
CHANGED
|
@@ -35,11 +35,11 @@
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35
35
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<input type="checkbox" name="class[]" value="A">A
|
|
36
36
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<input type="checkbox" name="class[]" value="B">B
|
|
37
37
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<input type="checkbox" name="class[]" value="C">C<br>
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|
38
|
-
<input type="checkbox" name =
|
|
38
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+
<input type="checkbox" name ="subject[]" value="janpanese">国語<br>
|
|
39
|
-
<input type="checkbox" name =
|
|
39
|
+
<input type="checkbox" name ="subject[]" value="math">数学<br>
|
|
40
|
-
<input type="checkbox" name =
|
|
40
|
+
<input type="checkbox" name ="subject[]" value="science">理科<br>
|
|
41
|
-
<input type="checkbox" name =
|
|
41
|
+
<input type="checkbox" name ="subject[]" value="social">社会<br>
|
|
42
|
-
<input type="checkbox" name =
|
|
42
|
+
<input type="checkbox" name ="subject[]" value="english">英語<br>
|
|
43
43
|
<input type="submit" name="search" value="検索"><br>
|
|
44
44
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<input type="submit" name="back" value="戻る"><br>
|
|
45
45
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</form>
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1
データ
answer
CHANGED
|
@@ -8,4 +8,39 @@
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|
|
8
8
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なおmysqliでインジェクション対策なしのSQLを発行しているようですが
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|
9
9
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あまり得策とはいえません。
|
|
10
10
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mysqliにも多少煩雑ですがprepare処理がありますので、そちらを使うか
|
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11
|
-
pdoでparepare処理することをおすすめします
|
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11
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+
pdoでparepare処理することをおすすめします
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12
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+
|
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13
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+
# 参考
|
|
14
|
+
プレースホルダの基本データ
|
|
15
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+
```PHP
|
|
16
|
+
<?PHP
|
|
17
|
+
$class=filter_input(INPUT_POST,"class",FILTER_DEFAULT,FILTER_REQUIRE_ARRAY);
|
|
18
|
+
$subject=filter_input(INPUT_POST,"subject",FILTER_DEFAULT,FILTER_REQUIRE_ARRAY);
|
|
19
|
+
$sql ="select students.name, classes.name FROM students ";
|
|
20
|
+
$sql.="JOIN classes ON students.class_id = classes.id ";
|
|
21
|
+
$sql.="JOIN scores ON students.id = scores.student_id ";
|
|
22
|
+
$sql.="WHERE 1 ";
|
|
23
|
+
$params=[];
|
|
24
|
+
if(!is_null($class)){
|
|
25
|
+
$sql.="and classes.name in (".implode(",",array_fill(0,count($class),"?")).") ";
|
|
26
|
+
$params_class =[str_repeat( 's', count($class))];
|
|
27
|
+
$params=array_merge($params,$params_class);
|
|
28
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+
}
|
|
29
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+
if(!is_null($subject)){
|
|
30
|
+
$sql.="and classes.name in (".implode(",",array_fill(0,count($subject),"?")).") ";
|
|
31
|
+
}
|
|
32
|
+
print $sql;
|
|
33
|
+
?>
|
|
34
|
+
<form method = "post">
|
|
35
|
+
<input type="checkbox" name="class[]" value="A">A
|
|
36
|
+
<input type="checkbox" name="class[]" value="B">B
|
|
37
|
+
<input type="checkbox" name="class[]" value="C">C<br>
|
|
38
|
+
<input type="checkbox" name = subject[] value = "janpanese">国語<br>
|
|
39
|
+
<input type="checkbox" name = subject[] value = "math">数学<br>
|
|
40
|
+
<input type="checkbox" name = subject[] value = "science">理科<br>
|
|
41
|
+
<input type="checkbox" name = subject[] value = "social">社会<br>
|
|
42
|
+
<input type="checkbox" name = subject[] value = "english">英語<br>
|
|
43
|
+
<input type="submit" name="search" value="検索"><br>
|
|
44
|
+
<input type="submit" name="back" value="戻る"><br>
|
|
45
|
+
</form>
|
|
46
|
+
```
|