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Последние активные темы форума |
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mysqli_ping
(PHP 5) mysqli_ping (no version information, might be only in CVS) mysqli->ping --
Pings a server connection, or tries to reconnect if the connection has gone down
DescriptionПроцедурный стиль: bool mysqli_ping ( mysqli link ) Объектно-ориентированный стиль (method): class mysqli { bool ping ( void ) } Checks whether the connection to the server is working. If it has gone
down, and global option mysqli.reconnect is enabled
an automatic reconnection is attempted.
This function can be used by clients that remain idle for a long while,
to check whether the server has closed the connection and reconnect if
necessary.
Возвращаемые значенияВозвращает TRUE в случае успешного завершения или FALSE в случае возникновения ошибки.
Примеры
Пример 1. Объектно-ориентированный стиль
<?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();
}
/* check if server is alive */
if (
$mysqli
->
ping
()) {
printf
(
"Our connection is ok!\n"
);
} else {
printf
(
"Error: %s\n"
,
$mysqli
->
error
);
}
/* close connection */
$mysqli
->
close
();
?>
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Пример 2. Процедурный стиль
<?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();
}
/* check if server is alive */
if (
mysqli_ping
(
$link
)) {
printf
(
"Our connection is ok!\n"
);
} else {
printf
(
"Error: %s\n"
,
mysqli_error
(
$link
));
}
/* close connection */
mysqli_close
(
$link
);
?>
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Результат выполнения данного примера:
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