Running on PHP you should execute using shell_exec. Like this :
<?php
$output = shell_exec('mysql -u root -p is2020_db < Triggers.sql');
echo "<pre>$output</pre>";
?>
Another way
Your MySQL binaries should be somewhere under your XAMPP folder. Look for a /bin folder, and
you'll find the mysql.exe client around. Let's assume it is in
c:\xampp\mysql\bin, then you should fireup a command prompt in this
folder.
That means, fire up "cmd", and type:
cd c:\xampp\mysql\bin
mysql.exe -u root -p is2020_db < Triggers.sql
Reference :
How do I use MySQL through XAMPP?
Example on Windows
For those using a Windows OS, I was able to import a large mysqldump file into my local XAMPP installation using this command in cmd.exe:
C:\xampp\mysql\bin>mysql -u root -p is2020_db < /path/to/file/Triggers.sql
But you have to check if this command is allowed in your host and/or you have to allow this in your server.