mysqli::ping

mysqli_ping

(PHP 5)

mysqli::ping -- mysqli_ping — Pings a server connection, or tries to reconnect if the connection has gone down

Описание

Object oriented style (method):

bool mysqli::ping ( void )

Procedural style:

bool mysqli_ping ( mysqli $link )

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.

Параметри

link: Само за процедурния стил: Идентификатор на връзката върнат от mysqli_connect() или mysqli_init()

Връщани стойности

Връща TRUE при успех или FALSE при неуспех.

Примери

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();
}

/* 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();
?>

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();
}

/* 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);
?>

Примерът по-горе ще изведе:

Our connection is ok!

add a note User Contributed Notes mysqli::ping - [0 notes]

There are no user contributed notes for this page.