回答編集履歴
2
三項演算子で書き直し
answer
CHANGED
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@@ -14,21 +14,12 @@
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14
14
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);
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15
15
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$result = array();
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16
16
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17
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-
foreach ($data as $key => $value)
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17
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+
foreach ($data as $key => $value)
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18
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-
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18
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empty($result[$key]) ? $result[$key] = $value : $result[$key] += $value;
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19
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$result[$key] += $value;
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20
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-
} else {
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21
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-
$result[$key] = $value;
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22
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-
}
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23
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-
}
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24
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-
foreach ($data2 as $key => $value) {
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25
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-
if (array_key_exists($key, $result)) {
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26
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$result[$key] += $value;
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27
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-
} else {
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28
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-
$result[$key] = $value;
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29
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-
}
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30
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-
}
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31
19
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20
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+
foreach ($data2 as $key => $value)
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21
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+
empty($result[$key]) ? $result[$key] = $value : $result[$key] += $value;
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22
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+
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32
23
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print_r($result);
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33
24
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```
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34
25
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@@ -50,15 +41,9 @@
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50
41
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$result = array();
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51
42
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52
43
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foreach (array($data, $data2) as $arr)
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53
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-
foreach ($arr as $key => $value)
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44
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+
foreach ($arr as $key => $value)
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54
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-
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45
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+
empty($result[$key]) ? $result[$key] = $value : $result[$key] += $value;
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55
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-
$result[$key] += $value;
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56
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-
} else {
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57
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-
$result[$key] = $value;
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58
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-
}
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59
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-
}
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60
46
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61
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-
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62
47
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print_r($result);
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63
48
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```
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64
49
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とか。
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1
加筆修正
answer
CHANGED
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@@ -30,4 +30,35 @@
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30
30
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}
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31
31
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32
32
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print_r($result);
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33
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-
```
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33
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+
```
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34
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+
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35
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+
おんなじコードを繰り返すのも芸がないので、
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36
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+
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37
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+
```php
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38
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+
<?php
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39
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+
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40
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$data = array(
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41
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'a' => 1,
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42
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'b' => 2,
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43
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'c' => 1,
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44
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);
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45
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$data2 = array(
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46
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'a' => 1,
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47
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'b' => 2,
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48
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'c' => 3,
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49
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);
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50
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$result = array();
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51
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+
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52
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+
foreach (array($data, $data2) as $arr)
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53
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+
foreach ($arr as $key => $value) {
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54
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if (array_key_exists($key, $result)) {
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55
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$result[$key] += $value;
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56
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} else {
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57
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$result[$key] = $value;
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58
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+
}
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59
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}
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60
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+
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61
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+
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62
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print_r($result);
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63
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+
```
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64
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+
とか。
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