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(PHP 5)
mysqli::$client_version -- mysqli_get_client_version — Returns the MySQL client version as a string
面向对象风格
过程化风格
$link 
   )Returns client version number as an integer.
A number that represents the MySQL client library version in format: main_version*10000 + minor_version *100 + sub_version. For example, 4.1.0 is returned as 40100.
This is useful to quickly determine the version of the client library to know if some capability exists.
Example #1 mysqli_get_client_version
  <?php
 
 printf ( "Client library version: %d\n" ,  mysqli_get_client_version ());
 ?>