回答編集履歴
2
再々訂正
answer
CHANGED
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@@ -4,7 +4,7 @@
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4
4
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$groups = [];
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5
5
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foreach ( $rows as $row ) {
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6
6
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$groups[$row['group']] = 1; // dummmy
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7
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-
$groups[$row['group']] = count($groups)
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7
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+
$groups[$row['group']] = count($groups);
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8
8
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$result['key_' . $groups[$row['group']]][] = $row;
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9
9
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}
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10
10
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```
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1
訂正
answer
CHANGED
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@@ -3,6 +3,7 @@
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3
3
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$result = [];
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4
4
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$groups = [];
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5
5
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foreach ( $rows as $row ) {
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6
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+
$groups[$row['group']] = 1; // dummmy
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6
7
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$groups[$row['group']] = count($groups) + 1;
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7
8
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$result['key_' . $groups[$row['group']]][] = $row;
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8
9
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}
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