':''),'searching for SVG in ',$path,$br;
foreach (array('1f31','f09f8c9') as $base) {	// handles both original and binary named files
	for ($pass=0;$pass<2;$pass++) { 	// search uppercase and lowercase filenames	
		for ($i=1;$i<14;$i++) { 	// since not all systems support glob braces
			$name=$base.dechex($i); $name=$pass?strtoupper($name):strtolower($name);
			$file=$path.($name=$name.'.svg');			
			if (is_file($file) && is_writable($file)) {
				if ($name!==basename(realpath($file))) { continue; }  // case-insensitive systems
				$data=file_get_contents($file);
				$size=strlen($data);
				$count=0;
				foreach ($replace as $old=>$new) { 
					$data=str_replace('fill="'.$old.'"','fill="'.$new.'"',$data,$replaced); 
					$count+=$replaced;
				}
				if ($count) { 
					$count=file_put_contents($file,$data); 
					if ($count===false || $count!=$size) { echo 'Error writing: ',$name,$br; }
					else { echo 'Successfully patched: ',$name,$br; $patched++; }
				} else { echo 'Did not patch: ',$name,$br;	}
			}
		}
	}
} echo str_repeat('-', 50),$br,$patched,' total SVG files patched',$br;