回答編集履歴
1
加筆修正
answer
CHANGED
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@@ -11,7 +11,7 @@
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11
11
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$result[] = $arr_item['article_id'];
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12
12
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}
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13
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14
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-
echo implode(',', $result);
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14
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+
echo implode(',', $result); // '4,6'
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15
15
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```
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16
16
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17
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