In fact, the language is not a problem, the key is the format. What is WAP PUSH? (Concept) The concept of WAP Push is a technique based on a customer-based mechanism that actively send information to the client, which is usually subscribed in advance. The most important difference is that the former is to send information to the client by the server actively, while the latter is actively requesting information by the client. The advantage of PUSH technology is the initiative and timeliness of information, and the weakness is poor accuracy. Push technology has not been achieved in the Internet because of many aspects. The fixed network in the fixed network provides users with sufficient resources and capabilities to find information , so the user usually uses it as a window to browse information, not a passive information recipient. The requirements for fixed network users for information accuracy are far more than their timely requirements. In the mobile network, the user cannot find information as soon as the fixed network is as convenient, if there is a network bandwidth, mobile device capabilities, and high tariff standards, users can easily find information as in fixed nets, if important information is active in time to user movement The equipment is undoubtedly greatly convenient. Advantages of mobile communication are that mobile devices can receive information anytime, so, the PUSH technology can be largely displayed in the mobile network, and WAP PUSH is the product of PUSH technology and mobile communications that binds to avoid shortcomings. WAP Push is a PUSH technology applied in a mobile network It has the characteristics of the characteristics of general PUSH technology and a mobile network. Its system framework, the use of protocols and services is very different from PUSH technology on fixed network. WAP PUSH technology combines the advantages of PUSH technology and the characteristics of mobile communication services, and has good application prospects. Applying PUSH technology to mobile communication areas can produce many telecom value-added services This includes mobile to send email, at any time obtaining stock price information, weather forecast, news, and location-related services. The common feature of all of these services is that the user's timely requirement is relatively high, and the user wants to be able to obtain the service anytime, anywhere, such as mobile devices such as mobile phones, PDA. However, WAP Push technology still has some problems to be solved. If the information is authenticated and certified, the accuracy of information is accurate, how to avoid spam, etc. How to solve these problems will be the key to the success of WAP PUSH technology.
In addition, with the development of GPRS technology and 3G wireless communication technology, the bandwidth of the wireless channel will gradually increase, and WAP PUSH will also further push multimedia information. Function GetSMSPUSH ($ SUBJECT, $ URL) {$ PushString = ""; $ BODY = ""; // Content_length POS $ body. = chr (0x80); $ body. = chr (0xB4); $ body. = chr ( 0x84); // Begin POS $ body. = CHR (0x02); $ body. = Chr (0x05); // - // wapforum // DTD Si 1.0 // EN $ body. = Chr (0x6a); // UTF-8 / / $ body. = Chr (0x03); // string start // $ body. = Iconv ("GBK", "UTF-8", $ subject); // Show to the user, use UTF-8 encoding. UTF-8 encoding, English characters use ASCII code directly; Chinese if unicode is (binary) $ body. = chr (0x00); // string end $ body. = chr (0x45); //
