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MySQLµÄÉèÖÃÎļþλÓÚ/etc/my.cnf¡£Ê×ÏÈ £¬ÐèÒªÐÞ¸ÄÒÔϲÎÊý£º

bind-address = 127.0.0.1 # °ó¶¨IPµØµã £¬ÕâÀïÉèÖÃΪÍâµØ»Ø»·µØµã

port = 3306 # ¼àÌý¶Ë¿Ú £¬Ä¬ÒÔΪ3306

max_connections = 500 # ×î´óÅþÁ¬Êý £¬Æ¾Ö¤ÏîÄ¿ÐèÇó¾ÙÐÐÉèÖÃ

character_set_server = utf8 # ĬÈÏ×Ö·û¼¯Îªutf8

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sudo systemctl restart mysqld

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PostgreSQLµÄÉèÖÃÎļþλÓÚ/var/lib/pgsql/data/postgresql.conf¡£ÒÔÏÂÊÇһЩ³£ÓõÄÉèÖÃÏ

listen_addresses = ‘localhost’ # ¼àÌýµØµã £¬Ä¬ÒÔΪlocalhost

port = 5432 # ¼àÌý¶Ë¿Ú £¬Ä¬ÒÔΪ5432

max_connections = 100 # ×î´óÅþÁ¬Êý £¬Æ¾Ö¤ÏîÄ¿ÐèÇó¾ÙÐÐÉèÖÃ

default_encoding = ‘UTF8’ # ĬÈÏ×Ö·û¼¯ÎªUTF8

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sudo systemctl restart postgresql

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ÅþÁ¬MySQLÊý¾Ý¿â£º

$mysqli = new mysqli('localhost', 'username', 'password', 'database');
if ($mysqli->connect_errno) {
    die('ÅþÁ¬Ê§°Ü£º' . $mysqli->connect_error);
}
echo 'ÅþÁ¬Àֳɣ¡';
$mysqli->close();

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$pgconn = pg_connect("host=localhost port=5432 dbname=database user=username password=password") 
    or die('ÅþÁ¬Ê§°Ü£º' . pg_last_error());
echo 'ÅþÁ¬Àֳɣ¡';
pg_close($pgconn);

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