Ping a server connection or reconnect if there is no connection

# cubrid_ping

(PECL CUBRID >= 8.3.1)

cubrid_ping — Ping a server connection or reconnect if there is no connection

### 说明

function cubrid_ping(resource `$conn_identifier` = ?): bool

Checks whether or not the connection to the server is working.

### 参数

`conn_identifier`
  The CUBRID connection identifier. If the connection identifier is not specified, the last connection opened by cubrid_connect() is assumed.

### 返回值

Returns `true` if the connection to the CUBRID server is working, otherwise `false`.

### 示例

示例 #1 cubrid_ping() example

    <?php
    set_time_limit(0);

    $conn = cubrid_connect('localhost', 33000, 'demodb');

    /* Assuming this query will take a long time */
    $sql = "select * from athlete";
    $result = cubrid_query($sql);
    if (!$result) {
        echo 'Query #1 failed, exiting.';
        exit;
    }

    /* Make sure the connection is still alive, if not, try to reconnect */
    if (!cubrid_ping($conn)) {
        echo 'Lost connection, exiting after query #1';
        exit;
    }
    cubrid_free_result($result);

    /* So the connection is still alive, let's run another query */
    $sql2 = "select * from code";
    $result2 = cubrid_query($sql2);
    ?>

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