回答編集履歴
2
調整
answer
CHANGED
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@@ -25,4 +25,5 @@
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25
25
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$c=$a.$ope.$b;
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26
26
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$d=call_user_func($calc[$ope][0],[$a,$calc[$ope][1]*$b**$calc[$ope][2]]);
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27
27
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echo $c."=".$d;
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28
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-
```
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28
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+
```
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29
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+
※調整
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1
ちょうせい
answer
CHANGED
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@@ -13,11 +13,16 @@
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13
13
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```PHP
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14
14
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$a=rand(1,100);
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15
15
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$b=rand(1,100);
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16
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+
$calc = [
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17
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+
'+'=>["array_sum",1,1],
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18
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+
'-'=>["array_sum",-1,1],
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19
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+
'*'=>["array_product",1,1],
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16
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-
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20
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+
'/'=>["array_product",1,-1],
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21
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+
];
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17
22
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$ar = array_keys($calc);
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18
23
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$ridx = array_rand($ar);
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19
24
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$ope=$ar[$ridx];
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20
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-
$c=$a.$
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25
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+
$c=$a.$ope.$b;
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21
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-
$d=call_user_func($calc[$
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26
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+
$d=call_user_func($calc[$ope][0],[$a,$calc[$ope][1]*$b**$calc[$ope][2]]);
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22
27
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echo $c."=".$d;
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23
28
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```
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