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Viewing file:     convertgrey.php (1.4 KB)      -rw-r--r--

""){
	$input=$fn;
	$outpu="";
	$pGif = strpos($input,".gif");
	if ($pGif===false){
	}else{
		$output = substr_replace($input, "grey", $pGif).substr($input, $pGif);
	}
	//rename imagename.jpg to imagenamegrey.jpg
	$pJpg = strpos($input,".jp");
	if ($pJpg===false){
	}else{
		$output = substr_replace($input, "grey", $pJpg).substr($input, $pJpg);
	}
	createGreyFromGifJpg($input, $output);	
}


function createGreyFromGifJpg($input, $output) {  
	$fn = strtolower($input);
	$pGif = strpos($fn,".gif");
	if ($pGif===false){ }else { $bild = imagecreatefromgif($input); }
	$pJpg = strpos($fn,".jp");
	if ($pJpg===false){ }else { $bild = imagecreatefromjpeg($input);  }
	$x = imagesx($bild);  
	$y = imagesy($bild);  
	for($i=0; $i<$y; $i++)	{  
		for($j=0; $j<$x; $j++) {  
			$pos = imagecolorat($bild, $j, $i);  
			$f = imagecolorsforindex($bild, $pos);  
			$gst = $f["red"]*0.15 + $f["green"]*0.5 + $f["blue"]*0.35;  
			$col = imagecolorresolve($bild, $gst, $gst, $gst);  
			imagesetpixel($bild, $j, $i, $col);  
		}  
	}
	if ($pGif===false){ }else { imagegif($bild,$output,90); }
	if ($pJpg===false){ }else { imagejpeg($bild,$output,90);  }
} 
?>




Filename >





bool(false)