# IBM DB2, Cloudscape and Apache Derby

# Introduction

These functions enable you to access IBM DB2 Universal Database, IBM Cloudscape, and Apache Derby databases using the DB2 Call Level Interface (DB2 CLI).

- Installing/Configuring
  - Requirements
  - Installation
  - Runtime Configuration
  - Resource Types
- Predefined Constants
- IBM DB2 Functions
  - db2_autocommit — Returns or sets the AUTOCOMMIT state for a database connection
  - db2_bind_param — Binds a PHP variable to an SQL statement parameter
  - db2_client_info — Returns an object with properties that describe the DB2 database client
  - db2_close — Closes a database connection
  - db2_column_privileges — Returns a result set listing the columns and associated privileges for a table
  - db2_columns — Returns a result set listing the columns and associated metadata for a table
  - db2_commit — Commits a transaction
  - db2_conn_error — Returns a string containing the SQLSTATE returned by the last connection attempt
  - db2_conn_errormsg — Returns the last connection error message and SQLCODE value
  - db2_connect — Returns a connection to a database
  - db2_cursor_type — Returns the cursor type used by a statement resource
  - db2_escape_string — Used to escape certain characters
  - db2_exec — Executes an SQL statement directly
  - db2_execute — Executes a prepared SQL statement
  - db2_fetch_array — Returns an array, indexed by column position, representing a row in a result set
  - db2_fetch_assoc — Returns an array, indexed by column name, representing a row in a result set
  - db2_fetch_both — Returns an array, indexed by both column name and position, representing a row in a result set
  - db2_fetch_object — Returns an object with properties representing columns in the fetched row
  - db2_fetch_row — Sets the result set pointer to the next row or requested row
  - db2_field_display_size — Returns the maximum number of bytes required to display a column
  - db2_field_name — Returns the name of the column in the result set
  - db2_field_num — Returns the position of the named column in a result set
  - db2_field_precision — Returns the precision of the indicated column in a result set
  - db2_field_scale — Returns the scale of the indicated column in a result set
  - db2_field_type — Returns the data type of the indicated column in a result set
  - db2_field_width — Returns the width of the current value of the indicated column in a result set
  - db2_foreign_keys — Returns a result set listing the foreign keys for a table
  - db2_free_result — Frees resources associated with a result set
  - db2_free_stmt — Frees resources associated with the indicated statement resource
  - db2_get_option — Retrieves an option value for a statement resource or a connection resource
  - db2_last_insert_id — Returns the auto generated ID of the last insert query that successfully executed on this connection
  - db2_lob_read — Gets a user defined size of LOB files with each invocation
  - db2_next_result — Requests the next result set from a stored procedure
  - db2_num_fields — Returns the number of fields contained in a result set
  - db2_num_rows — Returns the number of rows affected by an SQL statement
  - db2_pclose — Closes a persistent database connection
  - db2_pconnect — Returns a persistent connection to a database
  - db2_prepare — Prepares an SQL statement to be executed
  - db2_primary_keys — Returns a result set listing primary keys for a table
  - db2_procedure_columns — Returns a result set listing stored procedure parameters
  - db2_procedures — Returns a result set listing the stored procedures registered in a database
  - db2_result — Returns a single column from a row in the result set
  - db2_rollback — Rolls back a transaction
  - db2_server_info — Returns an object with properties that describe the DB2 database server
  - db2_set_option — Set options for connection or statement resources
  - db2_special_columns — Returns a result set listing the unique row identifier columns for a table
  - db2_statistics — Returns a result set listing the index and statistics for a table
  - db2_stmt_error — Returns a string containing the SQLSTATE returned by an SQL statement
  - db2_stmt_errormsg — Returns a string containing the last SQL statement error message
  - db2_table_privileges — Returns a result set listing the tables and associated privileges in a database
  - db2_tables — Returns a result set listing the tables and associated metadata in a database

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