mysqli::options
mysqli::poll
MySQLi
PHP Manual

# mysqli::ping

# mysqli_ping

(PHP 5)

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

### Descrição

Estilo orientado à objeto

bool mysqli::ping ( void )

Estilo procedural

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.

### Parâmetros

`link`

  Procedural style only: A link identifier returned by mysqli_connect() or mysqli_init()

### Valor Retornado

Retorna `TRUE` em caso de sucesso ou `FALSE` em caso de falha.

### Exemplos

Exemplo #1 mysqli::ping() example

Estilo orientado à objeto

`<?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();
?>`

Estilo procedural

`<?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);
?>`

Os exemplos acima irão imprimir:

    Our connection is ok!

mysqli::options
mysqli::poll
MySQLi
PHP Manual