PHP Developer's Dictionary- P79:PHP is an open source, server-side, HTML-embedded scripting language used to create dynamically generated Web pages. With an easy-to-use syntax and a large, extensible library of modules, PHP brings together the best of Perl, C++, and other languages. | PHP Developer s Dictionary The dba_exists function which was added in PHP and PHP checks for the existence of an entry with key in the database specified by the handle parameter. The return value is TRUE if the key is found and FALSE otherwise. dba_fetch Syntax string dba_fetch string key int handle Description The dba_fetch function which was added in PHP and PHP returns the data associated with the key in the database referenced by the handle . If the key is found its data value is returned and FALSE is returned otherwise. dba_firstkey Syntax string dba_firstkey int handle Description The dba_firstkey function which was added in PHP and PHP returns the first key in the database referenced by the handle parameter. It also resets an internal key pointer to the first item in the database which is useful when performing a linear search. The return value is the first key or FALSE if no key is found. dba_insert Syntax bool dba_insert string key string value int handle Description The dba_insert function which was added in PHP and PHP inserts an entry into the database referenced by the handle parameter. The entry is comprised IT-SC book 390 PHP Developer s Dictionary of the key and value parameters. If the key already exists in the database FALSE is returned otherwise TRUE is returned. dba_nextkey Syntax string dba_nextkey int handle Description The dba_nextkey function which was added in PHP and PHP returns the value of the next key in the database referenced by the handle parameter. The internal key pointer is also incremented. The key value is returned if successful and FALSE is returned otherwise. dba_open Syntax int dba_open string path string mode string handler . Description The dba_open function which was added in PHP and PHP is used to open a connection to a database. The path parameter represents a regular path in the filesystem. The mode parameter can be one of four options r for read .
