MaggsWeb:7 » image resize http://www.maggsweb.com www.maggsweb.com Sat, 21 Aug 2010 20:50:00 +0000 en hourly 1 http://wordpress.org/?v=3.0.1 imageResize (inline) http://www.maggsweb.com/php/imageresize-inline/ http://www.maggsweb.com/php/imageresize-inline/#comments Wed, 23 May 2007 20:51:08 +0000 chris http://www.cmaggs.co.uk/?p=14 Can’t rely on the size of an uploaded image and don’t want to resize it?

This function takes the larger size of the width and height and applies a formula accordingly. Then gets the new value and applies the percentage, then rounds the value. It returns the new sizes in html image tag format so that you can plug this function inside an image tag.

This is so this script will work dynamically with any size image, although relies on the use of getimagesize.

?View Code PHP
<?php
function imageResize($width, $height, $target) {
 
  if ($width &gt; $height) {
    $percentage = ($target / $width);
  } else {
    $percentage = ($target / $height);
  }
 
  $width = round($width * $percentage);
  $height = round($height * $percentage);
 
  return "width=\"$width\" height=\"$height\"";
 
}
?>

Use:

?View Code PHP
$imagepath = "/images/etc/image.jpg";
$image = getimagesize($imagepath);
// For Testing
// echo "<br />".$imagepath];
// echo "<br /> 0 = ".$logo[0];
// echo "<br /> 1 = ".$logo[1];
// echo "<br /> 2 = ".$logo[2];
// echo "<br /> 3 = ".$logo[3];
 
<img     src='$imagepath'
           alt=''
           title='' imageResize($image[0], $image[1],100) />
]]> http://www.maggsweb.com/php/imageresize-inline/feed/ 0