PHP5 or PHP4 this is the question

Hi all, After designing and testing my web pages in PHP 5.2.1 I learned that our web server has PHP 4.4.1 and I have to rollback to version 4 ! . There is no OO implementation like classes or objects in my scripts but every page has some queries the question is : will my scripts work in PHP 4 ? or should I re-write all of them? or will it affect the speed of queries? Thank you --------------------------------- Be a better Globetrotter. Get better travel answers from someone who knows. Yahoo! Answers - Check it out.