6
您在選擇器選項中選擇兩個行星A和B來測量距離。我可以使用兩個||嗎?和一個&&在PHP相同的if語句?
例如:
if (($planetA == "Nova Terra" || $planetB == "Nova Iaponia") && ($planetA == "Nova Iaponia" || $planetB == "Nova Terra"))
{
echo "From $planetA to $planet B: 290 parsecs";
}
else if (($planetA == "Nova Terra" || $planetB == "Novo Mars") && ($planetA == "Novo Mars" || $planetB == "Nova Terra"))
{
echo "From $planetA to $planet B: 230 parsecs";
}
你讀「從新星到泰拉諾娃Iaponia或從新星Iaponia新星兵馬俑」。 To =和。
這是類似這樣的:
if ($planetA == "Nova Terra" || $planetB == "Nova Iaponia")
{
echo "From $planetA to $planet B: 290 parsecs";
}
else if ($planetA == "Nova Iaponia" || $planetB == "Nova Terra")
{
echo "From $planetA to $planet B: 290 parsecs";
}
else if ($planetA == "Nova Terra" || $planetB == "Novo Mars")
{
echo "From $planetA to $planet B: 230 parsecs";
}
else if ($planetA == "Novo Mars" || $planetB == "Nova Terra")
{
echo "From $planetA to $planet B: 230 parsecs";
}
你「能」做到這一點(它的語法有效),但邏輯錯了。如果planetA和planetB都是「Nova Terra」,那麼您會收到290條短信。 –
這是我所指的問題。將正確的邏輯分成4條語句會分裂嗎?但我想縮短和節約代碼。 –