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[edit] PostgreSQL

PostgreSQL is another popular database used with PHP.

The basic syntax of PostgreSQL is the same as that of MySQL, although some functions have been renamed:

• mysqli_connect becomes pg_connect
• mysql_select_db is deprecated; it is specified in the pg_connect syntax
• mysqli_query becomes pg_query
• mysql_error becomes pg_last_error
• mysql_close becomes pg_close
• mysql_fetch_assoc becomes pg_fetch_assoc
• mysql_free_result becomes pg_free_result

[edit] For More Information

• PHP PostgreSQL manual
• PostgreSQL homepage and documentation