function set_font(&$obj, $fld)
{
if (isset($_GET[$fld])) {
if (preg_match('/^(\\d\\d?)?(b|i|bi|ib)?(-|$)/', $_GET[$fld], $p)) {
$s = $p[1];
if (!$s) {
$s = 10;
}
$at = isset($p[2]) ? $p[2] : '';
if (strstr($at, 'b')) {
$font = strstr($at, 'i') ? new TuffyBoldItalic($s) : new TuffyBold($s);
} elseif (strstr($at, 'i')) {
$font = new TuffyItalic($s);
} else {
$font = new Tuffy($s);
}
$obj->setFont($font, make_color($fld, '000000'));
} else {
$obj->setColor(make_color($fld, '000000'));
}
}
}
$img_height = ceil(strlen($caption) * 8);
$background_color = 'FFFFFF';
$font_color = 0;
$font_size = 3;
// Create color.
function make_color($color)
{
global $img;
$red = hexdec(substr($color, 0, 2));
$green = hexdec(substr($color, 2, 2));
$blue = hexdec(substr($color, 4, 2));
return imagecolorallocate($img, $red, $green, $blue);
}
// Sending header.
header("Content-type: image/png");
/*
* Creating image
*/
// Creating ressource.
$img = imagecreate($img_width, $img_height);
// Creating colors.
$background_color_id = make_color($background_color);
$font_color = make_color($font_color);
// Writing text.
imagestringup($img, $font_size, (int) ($img_width / 2 - $img_width / 3), $img_height - 3, $caption, $font_color);
// Making image transparent.
imagecolortransparent($img, $background_color_id);
// Returning image.
imagepng($img);
// Freeing memory.
imagedestroy($img);
// Find the 9th time "$search_for" occurs
$pos = strposX($html, $search_for, 9 + 11 * $buoy_index);
// Add on the lenght of "$search_for" get the position of its end
$pos += strlen($search_for);
// text is everything after "$search_for" e.g. text = " 0.4 </td"
$text = substr($html, $pos, 15);
if (strpos($text, 'n/a') !== false) {
http_response_code(404);
echo json_encode($error_response);
exit;
}
// Get everythong before the "<"
$period = trim(explode('<', $text)[0]);
// Repeat for the 10th time
$pos = strposX($html, $search_for, 10 + 11 * $buoy_index);
// Add on the lenght of "$search_for" get the position of its end
$pos += strlen($search_for);
// text is everything after "$search_for" e.g. text = " 0.4 </td"
$text = substr($html, $pos, 15);
if (strpos($text, 'n/a') !== false) {
http_response_code(404);
echo json_encode($error_response);
exit;
}
// Get everythong before the "<"
$height = trim(explode('<', $text)[0]);
$frequency = period_to_frequency($period);
$volume = height_to_volume($height);
$RGB = make_color($volume, $frequency);
$response = array("frequency" => $frequency, "volume" => $volume, "color" => $RGB);
echo json_encode($response);
