PHP. Учебник. 2005

mysqli_error

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mysqli_error

(PHP 5)mysqli_error -- Returns a string description of the last error

Description

Procedural style:string mysqli_error ( mysqli link )


Object oriented style (property)class mysqli {


string error


}

- The mysqli_error() function is identical to the corresponding mysqli_errno() function in every way, except instead of returning an integer error code the mysqli_error() function will return a string representation of the last error to occur for the database connection represented by the link parameter. If no error has occured, this function will return an empty string.

Возвращаемые значения

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

Смотрите также

- mysqli_connect_errno(), mysqli_connect_error(), mysqli_errno() и mysqli_sqlstate().

Примеры

Пример 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();
?>

Пример 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);
?>

Результат выполнения данного примера:
Errormessage: Unknown system variable 'a'

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mysqli_escape_string 22222

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