php タイムゾーンエラー

ECCUBE構築時に購入画面で下記エラーが発生

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PHP Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Asia/Tokyo' for 'JST/9.0/no DST

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原因はphp.iniにタイムゾーン設定がされていないためです。
で、↓を記述
date.timezone = Asia/Tokyo

apache再起動でエラーは回避しました