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# PHP image2wbmp - Output WBMP Image [PHP Image Processing](#) image2wbmp — Outputs an image to the browser or a file in WBMP format. ### Syntax int image2wbmp ( resource $image [, string $filename [, int $threshold ]] ) image2wbmp() creates a WBMP file named filename from the image image. The image parameter is the return value of an image creation function, such as imagecreatetruecolor(). The filename parameter is optional. If omitted, the original image stream is output directly. ### Example [PHP Image Processing](#)