title: Equivalent function with date_create() for php 4
body: <p>I've no option but to choose PHP4.4.4 in my office. When I created a function using date_create() in PHP5 on my laptop works fine but in my office computer,it leaves an error like below:<br/>
  Fatal error: Call to undefined function: date_create()<br/>
  Same goes for date_diff() also.</p>
  
  <p>I understand it's due to the version incompatibility issue.
  Can anybody suggest other equivalent function for these two to be used in PHP4?
  Thanks.</p>