Detect Image Resolution Without Gd Also stop error if not found

Hi, I have come accross some starnge problem in PHP.I wanted to detect the image resolution in of a URL specified by the user.This is possible via getimagesize() function of PHP that is independent of GD library.But this function generates a E_WARNING Error if the image is not there.What shall i do to stop this warning ??I dont want to show the Error in PHP style but my style of error reporting.Please help me.

First run an if statement to check for the existance of the image. If it doesn't exist, output to the user that they made a mistake and the address to the image is incorrect. Make sure that you kill the script after you output your nicer error, or it will still try and get the image size.