mysqli_connect 접속테스트 표준구문 > 기술자료

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<?php
$link = mysqli_connect("127.0.0.1", "my_user", "my_password", "my_db");

if (!$link) {
    echo "Error: Unable to connect to MySQL." . PHP_EOL;
    echo "Debugging errno: " . mysqli_connect_errno() . PHP_EOL;
    echo "Debugging error: " . mysqli_connect_error() . PHP_EOL;
    exit;
}

echo "Success: A proper connection to MySQL was made! The my_db database is great." . PHP_EOL;
echo "Host information: " . mysqli_get_host_info($link) . PHP_EOL;

mysqli_close($link);

//phpinfo();
?>


정상 접속
Success: A proper connection to MySQL was made! The my_db database is great. Host information: Localhost via UNIX socket


접속 오류.1
Warning: mysqli_connect(): (HY000/2002): No such file or directory in /home/happyjung/www/test.php on line 2
Error: Unable to connect to MySQL. Debugging errno: 2002 Debugging error: No such file or directory

접속 오류.2
Error: Unable to connect to MySQL. Debugging errno: 2002 Debugging error: php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution


관련자료
https://secure.php.net/manual/kr/function.mysqli-connect.php
https://www.php.net/manual/en/function.mysqli-connect.php