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dBase Functions

Introduktion

These functions allow you to access records stored in dBase-format (dbf) databases.

dBase files are simple sequential files of fixed length records. Records are appended to the end of the file and delete records are kept until you call dbase_pack().

The types of dBase fields available are:

Available types of fields
Field dBase Type Format Additional information
M Memo n/a This type is not supported by PHP, such field will be ignored
D Date YYYYMMDD The field length is limited to 8
N Number A number You must declare a length and a precision (the number of digits after the decimal point)
C String A string You must declare a length. When retrieving data, the string will be right-padded with spaces to fit the declared length.
L Boolean T or Y for TRUE, F or N for FALSE Stored and returned as an integer (1 or 0)
F Float A float number Support for this type of field was added in PHP 5.2.0

Warning

There is no support for indexes or memo fields. There is no support for locking, too. Two concurrent web server processes modifying the same dBase file will very likely ruin your database.

We recommend that you do not use dBase files as your production database. 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.

Installation

In order to enable the bundled dbase library and to use these functions, you must compile PHP with the --enable-dbase option.

Konfiguration under drift

Den här utbyggnaden definerar inte några konfigurationsdirektiv i php.ini.

Resurstyper

Den här utbyggnaden har inte några resurstyper definerade.

Exempel

Many examples in this reference require a dBase database. We will use /tmp/test.dbf that will be created in the example of dbase_create().

Fördefinerade konstanter

Den här utbyggnaden har inte några konstanter definerade.

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