PearDB初心者入門ガイド

  Pear   ：

# cd /usr/local/lib

 “phpfi“    :

# cvs -d :pserver:[email protected]:/repository login

          pear  ，                。      ："today", "last month", 。    "last week"  ，    bugs            。

# cvs -d :pserver:[email protected]:/repository export -D "last week" php4/pear

  php.ini         include_path ： /usr/local/lib/php4/pear         ，              ： ini_set('include_path', 'path_to_pear');

// The pear base directory must be in your include_path
require_once 'DB.php';
$user = 'foo';
$pass = 'bar';
$host = 'localhost';
$db_name = 'clients_db';

// Data Source Name: This is the universal connection string
$dsn = "mysql://$user:$pass@$host/$db_name";

// DB::connect will return a Pear DB object on success
// or a Pear DB Error object on error
// You can also set to TRUE the second param
// if you want a persistent connection:
// $db = DB::connect($dsn, true);
$db = DB::connect($dsn);

// With DB::isError you can differentiate between an error or
// a valid connection.
if (DB::isError($db)) {
        die ($db->getMessage());
}
....
// You can disconnect from the database with:
$db->disconnect();
?>

     *  phptype: Database backend used in PHP (mysql, odbc etc.)
     *  dbsyntax: Database used with regards to SQL syntax etc.
     *  protocol: Communication protocol to use (tcp, unix etc.)
     *  hostspec: Host specification (hostname[:port])
     *  database: Database to use on the DBMS server
     *  username: User name for login
     *  password: Password for login
     *
     * The format of the supplied DSN is in its fullest form:
     *
     *  phptype(dbsyntax)://username:password@protocol+hostspec/database
     *
     * Most variations are allowed:
     *
     *  phptype://username:password@protocol+hostspec:110//usr/db_file.db
     *  phptype://username:password@hostspec/database_name
     *  phptype://username:password@hostspec
     *  phptype://username@hostspec
     *  phptype://hostspec/database
     *  phptype://hostspec
     *  phptype(dbsyntax)
     *  phptype

mysql  -> MySQL
pgsql  -> PostgreSQL
ibase  -> InterBase
msql   -> Mini SQL
mssql  -> Microsoft SQL Server
oci8   -> Oracle 7/8/8i
odbc   -> ODBC (Open Database Connectivity)
sybase -> SyBase
ifx    -> Informix
fbsql  -> FrontBase

// Once you have a valid DB object
...
$sql = "select * from clients";
// If the query is a "SELECT", $db->query will return
// a DB Result object on success.
// Else it simply will return a DB_OK
// On failure it will return a DB Error object.
$result = $db->query($sql);
// Always check that $result is not an error
if (DB::isError($result)) {
        die ($result->getMessage());
}
....
?>