MySQLi - 获取连接状态

语法

array mysqli_get_connection_stats ( mysqli $link )

定义和用法

它返回有关客户端连接的统计信息。

范例

尝试以下示例 -

<?php
   $servername = "localhost:3306";
   $username = "root";
   $password = "";
   $dbname = "TUTORIALS";
   $conn = new mysqli($servername, $username, $password, $dbname);

   if ($conn->connect_error) {
      die('Connect Error (' . mysqli_connect_errno() . ') '. mysqli_connect_error());
      exit();
   } 
   if (!mysqli_query($conn, "SET a = 1")) {
      printf("Errorcode: %d\n", mysqli_error($conn));
   }
   echo 'Success... ' . mysqli_get_host_info($conn) . "\n";
   print_r(mysqli_get_connection_stats($conn));
?>

上述代码的示例输出应如下所示 -

Errorcode: 0 Success... localhost:3306 via TCP/IP Array ( [bytes_sent] => 116 
[bytes_received] => 144 [packets_sent] => 4 [packets_received] => 3 
[protocol_overhead_in] => 12 [protocol_overhead_out] => 16 
[bytes_received_ok_packet] => 0 [bytes_received_eof_packet] => 0 
[bytes_received_rset_header_packet] => 0 [bytes_received_rset_field_meta_packet] => 0 
[bytes_received_rset_row_packet] => 40 [bytes_received_prepare_response_packet] => 0 
[bytes_received_change_user_packet] => 0 [packets_sent_command] => 1 
[packets_received_ok] => 0 [packets_received_eof] => 0 
[packets_received_rset_header] => 0 [packets_received_rset_field_meta] => 0 
[packets_received_rset_row] => 1 [packets_received_prepare_response] => 0 
[packets_received_change_user] => 0 [result_set_queries] => 0 
[non_result_set_queries] => 0 [no_index_used] => 0 [bad_index_used] => 0 
[slow_queries] => 0 [buffered_sets] => 0 [unbuffered_sets] => 0 
[ps_buffered_sets] => 0 [ps_unbuffered_sets] => 0 [flushed_normal_sets] => 0 
[flushed_ps_sets] => 0 [ps_prepared_never_executed] => 0 
[ps_prepared_once_executed] => 0