回答編集履歴
5
変更
test
CHANGED
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@@ -20,6 +20,6 @@
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20
20
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21
21
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```php
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22
22
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23
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-
if (ctype_digit($age)) echo "OK\n";
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23
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+
if (ctype_digit((string)$age)) echo "OK\n";
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24
24
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25
25
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```
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4
変更
test
CHANGED
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@@ -20,6 +20,6 @@
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20
20
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21
21
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```php
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22
22
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23
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-
if (ctype_digit($age)
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23
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+
if (ctype_digit($age)) echo "OK\n";
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24
24
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25
25
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```
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3
追加
test
CHANGED
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@@ -11,3 +11,15 @@
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11
11
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12
12
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13
13
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(※）文字数字は'0'はFALSE
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14
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+
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15
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+
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16
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+
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17
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+
文字列数字対応
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18
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+
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19
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+
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20
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+
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21
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+
```php
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22
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+
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23
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+
if (ctype_digit($age) && is_int((int)$age)) echo "OK\n";
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24
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+
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25
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+
```
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2
加筆
test
CHANGED
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@@ -7,3 +7,7 @@
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7
7
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if (is_int($age) && is_numeric($age)) echo "OK\n";
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8
8
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9
9
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```
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10
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+
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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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+
(※）文字数字は'0'はFALSE
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1
変更
test
CHANGED
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@@ -4,6 +4,6 @@
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4
4
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5
5
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```php
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6
6
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7
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-
if (is_int($age) && is_numeric($age)
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7
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+
if (is_int($age) && is_numeric($age)) echo "OK\n";
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8
8
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9
9
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```
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