![]() ![]() This memory is taken from RAM or the memory allocated to php. If a jpg image for example, is 5000px x 5000px then imagecreatefromjpg would uncompress it and use a large amount of memory (5000 x 5000 pixels) to store it. The above program can resize a gif, jpg, or png image and the output is a jpg image. If(! imagecopyresampled($imageResized, $img, 0, 0, 0, 0, $new_width, $new_height, $width, $height)) If(!($imageResized = imagecreatetruecolor($new_width, $new_height)))ĭie("Could not create new image resource of width : $new_width, height : $new_height") $new_height = round($height * (1/$xscale)) ![]() $new_width = round($width * (1/$xscale)) $new_height = round($height * (1/$yscale)) ![]() $new_width = round($width * (1/$yscale)) List( $width, $height ) = getimagesize( $src ) $img = imagecreatefrompng ($src) //try pngĭie("Could Not create image resource $src") $img = imagecreatefromgif ($src) //try gif $img = imagecreatefromjpeg ($src) //try jpg Here is a quick example function resize_image($src, $dest, $toWidth, $toHeight, $options = array()) The function imagecopyresampled is used to resize an image with gd library. On the other hand Imagemagick uses disk space to process the image data and can work with large size images easily. GD vs Imagemagick: GD library uses ram memory to decode and encode images which becomes an issue when the image size is large and php runs out of available memory. The default library to handle image operations in php is GD. ![]()
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