MySQLi
PHP Manual

mysqli->error

mysqli_error

(PHP 5)

mysqli->error -- mysqli_errorReturns a string description of the last error

설명

Object oriented style (property):

string $error;

Procedural style:

string mysqli_error ( mysqli $link )

Returns the last error message for the most recent MySQLi function call that can succeed or fail.

인수

link

순차 형식 전용: mysqli_connect()mysqli_init()가 반환한 연결 식별자.

반환값

A string that describes the error. An empty string if no error occurred.

예제

Example #1 Object oriented style

<?php
$mysqli 
= new mysqli("localhost""my_user""my_password""world");

/* check connection */
if (mysqli_connect_errno()) {
    
printf("Connect failed: %s\n"mysqli_connect_error());
    exit();
}

if (!
$mysqli->query("SET a=1")) {
    
printf("Errormessage: %s\n"$mysqli->error);
}

/* close connection */
$mysqli->close();
?>

Example #2 Procedural style

<?php
$link 
mysqli_connect("localhost""my_user""my_password""world");

/* check connection */
if (mysqli_connect_errno()) {
    
printf("Connect failed: %s\n"mysqli_connect_error());
    exit();
}

if (!
mysqli_query($link"SET a=1")) {
    
printf("Errormessage: %s\n"mysqli_error($link));
}

/* close connection */
mysqli_close($link);
?>

위 예제의 출력:

Errormessage: Unknown system variable 'a'

참고


MySQLi
PHP Manual