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How to Autosize Images with php The simple PHP function will show you how to create an auto-sizing imaging system, which is especially handy when users are uploading their own images that may be a 1000 meters wide and high; it prevents people from destroying the layout to your site. writePicture Code: function writePicture($image, $maxwidth, $maxheight) { if($image !== "") { list($width, $height, $type, $attr) = getimagesize($image); if($width > $maxwidth) { $constant = $maxwidth/$width; $width = $constant * $width; $height = $constant * $height; } if($height > $height) { $constant = $maxheight/$height; $width = $constant * $width; $height = $constant * $height; } echo"<img src=\"$image\" width=\"$width\" height=\"$height\" border=\"0\">"; } else { if($maxwidth < 1){ $maxwidth = 100; } if($maxheight < 1) { $maxheight = 100;} echo"<img src=\"images/pages/missingpic.png\" width=\"$maxwidth\" height=\"$maxwidth\" border=\"0\">"; } } A Noobs World © 2007-2008

Contributed by hotnoob on April 6, 2008, at 8:35 PM UTC.

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