PHP, EXEC(), WKHTMLTOPDF, CMD LINE: How to use exec() command in PHP to generate pdf by pointing to a html page

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// THE BELOW WORKS FOR LOCAL WINDOWS MACHINE FROM A WAMP HOSTED CODEIGNITER SITE - CALL MADE FROM CODEIGNITER CONTROLLER

$myCmd = "C://wamp//bin//wkhtmltopdf//wkhtmltopdf.exe http://proofofconcept.proximitystage.com/email-media-queries C://Users//mosley.j//Desktop//jonnny.pdf";	
$result = exec($myCmd,$output,$var);
var_dump($output);
var_dump($var);


// BELOW IS THE CMD LINE CODE/STEPS YOU NEED IN ORDER TO RUN THE SAME THING FROM PURE CMD LINE

// CHANGE CMD LINE DIRECTORY TO WHERE YOUR .EXE FOR WKHTMLTOPDF SITS
cd C:\Program Files (x86)\wkhtmltopdf

// RUN THE COMMAND TO EXECUTE THE WKHTMLTOPDF PROGRAM PASSING IN THE HTML PAGE YOU WANT TO RENDER AS A PDF, THEN SPECIFY WHERE YOU WANT THE PDF TO SIT AND WHAT IT SHOULD BE CALLED
wkhtmltopdf http://jonmosley.co.uk C:\Users\someusernamehere\Desktop\jon.pdf