function rammsteinUpdateRRD($station_id, $fuel_id, $price, $time = 0)
{
if ($time == 0) {
$time = "now";
}
$rrd = rammsteinGetRRDPath($station_id, $fuel_id);
$cmd = "rrdtool update {$rrd} {$time}:{$price}";
echo system($cmd);
}
\t\t\t'COMMENT: \\n' \\
EOT;
//$colors = array('#F00','#0F0','#00F','#F0F','#0FF','#F00');
$colors = array('#A0BED9', '#88A61B', '#F29F05', '#6D0501', '#D92525', '#000');
$max_len = 0;
foreach ($stations as &$station) {
if (strlen($station['name']) > $max_len) {
$max_len = strlen($station['name']);
}
}
$i = 0;
foreach ($stations as &$station) {
$color = $colors[$i++ % sizeof($colors)];
$colorx = $color . '10';
$rrd = rammsteinGetRRDPath($station['id'], $fuel['id']);
$id = $station['id'];
$space = str_repeat(' ', $max_len - strlen($station['name']));
$cmd .= <<<EOF
\t\t\t'DEF:p{$id}={$rrd}:price:LAST' \\
\t\t\t'CDEF:sp{$id}=p{$id},100,*' \\
\t\t\t'CDEF:ap{$id}=sp{$id},UN,PREV(sp{$id}),sp{$id},IF' \\
\t\t\t'LINE1:ap{$id}{$color}:{$station['name']}' \\
\t\t\t'COMMENT: {$space}' \\
\t\t\t'GPRINT:p{$id}:LAST:Current\\:%4.3lf%s' \\
\t\t\t'GPRINT:p{$id}:MIN:Minimum\\:%4.3lf%s' \\
\t\t\t'GPRINT:p{$id}:MAX:Maximum\\:%4.3lf%s\\l' \\
EOF;
// 'AREA:sp$id$colorx' \
}
