Posted By

brownrl on 02/11/11

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flash

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Last Edited at 02/11/11 07:56pm

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Get Width and Height From a Filename

/ Published in: PHP

I use this little guy to get the width and height from a filename. Often when I need to show a flash swf file I don't have an easy way to tell the width and the height of the file for display. However is the file name is "some_flash_file 300x250.swf" then this litte guy will help a lot.

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/**
*
*  Function: getWH
*  Description: Return the width and height from a given string
*
*  Param:  $f a string that hopefully has ###x### some where in it
*
*  Caveat: This will not work on every single file name ever conceived by man.
*          ex, something45x77x88x90x13.jpg not only is a stupid name for a file
*              but will foobar this function.
*
**/
function getWH( $f )
{
        // First we get the height by stripping off the numbers that follow an 'x'
	preg_match( "/^.*x([0-9]+).*$/" , strtolower( $f ) , $matches );
	$height = $matches[1];

// Next we reverse the string and do the same thing for the width	
	$f = strrev( $f );
	preg_match( "/^.*x([0-9]+).*$/" , strtolower( $f ) , $matches );
	$width = strrev( $matches[1] ); // re-reverse

// Probably there exists a better regular expression to do it in one step.
        // Then again there is probably a regular expression that can cure world hunger
        // Maybe someday I will figure out both!
	
	$dims[0] = $width;
	$dims[1] = $height;
	
	return $dims; // return a simple array
}

URL: http://www.itsgotto.be/cv.php

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