   #PHP Manual Image functions imagecopymergegray imagecopyresized

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                              imagecopyresampled

   (PHP 4 >= 4.0.6)
   imagecopyresampled -- Copy and resize part of an image with resampling

Description

   bool imagecopyresampled ( resource dst_im, resource src_im, int dstX,
   int dstY, int srcX, int srcY, int dstW, int dstH, int srcW, int srcH)

   imagecopyresampled() copies a rectangular portion of one image to
   another image, smoothly interpolating pixel values so that, in
   particular, reducing the size of an image still retains a great deal
   of clarity. Returns TRUE on success or FALSE on failure. dst_im is the
   destination image, src_im is the source image identifier. If the
   source and destination coordinates and width and heights differ,
   appropriate stretching or shrinking of the image fragment will be
   performed. The coordinates refer to the upper left corner. This
   function can be used to copy regions within the same image (if dst_im
   is the same as src_im) but if the regions overlap the results will be
   unpredictable.

     Note: There is a problem due to palette image limitations (255+1
     colors). Resampling or filtering an image commonly needs more
     colors than 255, a kind of approximation is used to calculate the
     new resampled pixel and its color. With a palette image we try to
     allocate a new color, if that failed, we choose the closest (in
     theory) computed color. This is not always the closest visual
     color. That may produce a weird result, like blank (or visually
     blank) images. To skip this problem, please use a truecolor image
     as a destination image, such as one created by
     imagecreatetruecolor().

     Note: imagecopyresampled() requires GD 2.0.l or greater.

   See also imagecopyresized().
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