PHP mysqli_ssl_set() 函数

<?php
$con=mysqli_init();
if (!$con)
{
die("mysqli_init failed");
}

mysqli_ssl_set($con,"key.pem","cert.pem","cacert.pem",NULL,NULL);

if (!mysqli_real_connect($con,"localhost","my_user","my_password","my_db"))
{
die("Connect Error: " . mysqli_connect_error());
}

// Some queries...

mysqli_close($con);
?>