Online, how does the Web page determine whether the client is an Android or an iOS system?

Online, how does the Web page determine whether the client is an Android or an iOS system? To open different software according to different systems. Now you can open the software, both Android and iOS can be opened. But how do you tell if the current model is Android or iOS?

Reply to discussion (solution)

Can pass? Http_user_agent?

function Getuseragent () {$agent = $_server[' http_user_agent '];if (Stripos ($agent, ' IPod ')!==false| | Stripos ($agent, ' IPhone ')!==false| | Stripos ($agent, ' IPad ')!==false) {return ' IOS ';} ElseIf (Stripos ($agent, ' Android ')!==false) {}return ' Android ';} Else{return ' other ';}}

