$valid_signal = false; if ($_GET["railway:signal:main"] == "DE-ESO:hp") { if (isset($_GET["railway:signal:main:form"])) { if ($_GET["railway:signal:main:form"] == "light") { $result = HV_main_light::generateImage($height); $valid_signal = true; } elseif ($_GET["railway:signal:main:form"] == "semaphore") { $result = HV_main_semaphore::generateImage($height); $valid_signal = true; } } } elseif ($_GET["railway:signal:main"] == "DE-ESO:ks") { $result = KS_main::generateImage($height); $valid_signal = true; } elseif ($_GET["railway:signal:main"] == "DE-ESO:hl") { $result = HL_main::generateImage($height); $valid_signal = true; } else { if ($_GET["railway:signal:main:form"] == "semaphore") { $result = Main_semaphore::generateImage($height); $valid_signal = true; } else { $result = Main_light::generateImage($height); $valid_signal = true; } } if ($valid_signal) { $signal[$s] = $result[0]; $height += $result[1]; $s++; }