<?php $link = mysqli_connect("localhost", "my_user", "my_password", "test");
/* check connection */ if (mysqli_connect_errno()) { printf("Connect failed: %s\n", mysqli_connect_error()); exit(); }
/* return name of current default database */ if ($result = mysqli_query($link, "SELECT DATABASE()")) { $row = mysqli_fetch_row($result); printf("Default database is %s.\n", $row[0]); mysqli_free_result($result); }
/* change db to world db */ mysqli_select_db($link, "world");
/* return name of current default database */ if ($result = mysqli_query($link, "SELECT DATABASE()")) { $row = mysqli_fetch_row($result); printf("Default database is %s.\n", $row[0]); mysqli_free_result($result); }
mysqli_close($link); ?>
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