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はじめに
These functions allow you to access records stored in dBase-format (dbf) databases. 警告
We recommend against using dBase files as your production database. Use » SQLite or choose any real SQL server instead; » MySQL or » Postgres are common choices with PHP. dBase support is here to allow you to import and export data to and from your web database, because the file format is commonly understood by Windows spreadsheets and organizers. 警告
As of dbase 7.0.0 the databases are automatically locked via flock(). There has been no support for locking earlier, so two concurrent web server processes modifying the same dBase file would have very likely ruined your database. This can happen even with dbase 7.0.0+ on systems which implement the locks at the process level with multithreaded SAPIs such as ISAPI. dBase files are simple sequential files of fixed length records. Records are appended to the end of the file and deleted records are kept until you call dbase_pack(). Only dbf file levels 3 (dBASE III+) - 5 (dBASE V) are supported. The types of dBase fields available are:
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