SQLSERV in PHP7 not Working - php

Question

I'm attempting to connect with a Sybase database with PHP7 on Windows Server 2012 R2 using the sqlsrv PDO driver. I've tried a number of connection strings - the following is the most direct connection string I've found that should be at least tossing me an error (an error from PHP) when accessing the page. However, when I access the page it it tells me the page is not working (as in the PHP is not working). PDO SQLSRV is active in my phpinfo(). The PHP Error I receive is:
[18-Nov-2016 22:32:18 UTC] PHP Warning: PHP Startup: Unable to load dynamic library 'C:\Program Files\PHP\v7.0\ext\php_wincache.dll' - The specified module could not be found.
in Unknown on line 0
And many times in the same log file I am receiving the following error:
[18-Nov-2016 22:31:23 UTC] PHP Warning: PHP Startup: Unable to load dynamic library 'C:\Program Files\PHP\v7.0\ext\php_mysql.dll' - The specified module could not be found.
in Unknown on line 0
This is all basically a straight-up install, so I'm surprised that it's tossing back errors about windows cache and mysql (when I'm not even attempting to access a mysql anything). Any leads or information would be great. Thank you for this forum!
<?php
try {
$server_name = "MY\SERVER,1234";
$database_name = "myDatabase";
$username = "myUsername";
$password = "myPassword";
$conn = new PDO("sqlsrv:server=$server_name;database=$database_name", "$username", "$password");
$conn->setAttribute( PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION );
}
catch( PDOException $e ) {
die( "Error connecting to SQL Server" );
}
echo "Connected to SQL Server\n";
?>