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php create file if not exist

php create file if not exist

Is there a way to create an index in MySQL if it does not exist? MySQL does not support the obvious format: CREATE INDEX IF NOT EXISTS index_name ON table(column) ERROR ...

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Flock是另一個好用的瀏覽器。剛開始的Flock跟火狐是用相同的核心，因此操作方式會與火狐有些相似，但近來年，改成與 Google Chrome相同的核心，速度變快許多。其中最大的特色是可以整合目前最流行的社交網站，包含 FACEBOOK,Twitter,LinkedIn,YouTube等。同時操作方式跟Chrome非常相似，也會自動記錄密碼等常用網站的功能，非常好用。 ...

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