回答編集履歴
1
コピペミスの修正
test
CHANGED
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@@ -12,7 +12,7 @@
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```PHP
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-
preg_match("/(^|\D)\d{3}(\D|$)/",
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+
preg_match("/(^|\D)\d{3}(\D|$)/",$str)
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```
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