回答編集履歴
1
追記
answer
CHANGED
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@@ -8,4 +8,18 @@
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8
8
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$b=array_merge($a[0],$a[1]);
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9
9
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var_dump($b);
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10
10
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11
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+
```
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12
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+
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13
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# 複数の要素
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14
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array_walK()を使う手もあります
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15
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```PHP
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16
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$a=[
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17
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['100','101'],
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18
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['102','103'],
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19
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['104','105'],
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20
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];
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21
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$b=[];
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22
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array_walk($a,function($x) use (&$b){$b=array_merge($b,$x);});
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23
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var_dump($b);
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24
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+
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11
25
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```
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