我通过网站获得了用于控制Arduino二极管的PHP脚本，但我遇到了问题。我的Arduino代码是:intgreen=8;intincomingbyte;voidsetup(){Serial.begin(9600);pinMode(green,OUTPUT);}voidloop(){if(Serial.available()>0){incomingbyte=Serial.read();}if(incomingbyte=='0'){digitalWrite(green,HIGH);}if(incomingbyte=='1'){digitalWrite(green,LOW);}}我的PHP