How to achieve automatic printing of orders in php

With the rapid popularization of mobile Internet, more and more people choose to place orders online, especially in the field of e-commerce. Order volume has become one of the important indicators to measure the business of an e-commerce platform. However, in the process of processing orders, many stores will encounter a problem: How to realize automatic printing of orders?

With the development and application of technology, PHP has become one of the main languages ​​for developing various websites and applications. In PHP, through the printer driver, we can operate the printer. Next, let’s learn how to use PHP to automatically print orders.

First of all, we need to understand that the printer driver must have relevant API interfaces. Generally speaking, printer drivers will use the ESC/POS command set to communicate. ESC/POS is an instruction set connected to commercial printers. It is mainly used to control various functions of the printer, including characters, graphics, paper cutting, etc.

Before using the PHP printer driver, we need to determine the following factors:

1. Printer brand and model.
2. Print template format.
3. The port and address required to connect the printer.

Next, we can use PHP's built-in socket function and ESC/POS instruction set to operate the printer. The following is a simple sample code:

$printer_ip = "192.168.0.1"; // Printer IP address
$printer_port = 9100; // Printer port number

// Establish a socket connection
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
if ($socket === false) {

// 出错处理

} else {

// 连接打印机
$result = socket_connect($socket, $printer_ip, $printer_port);
if ($result === false) {
    // 出错处理
} else {
    // 发送打印指令
    $data = "Hello, world!\n";  // 打印内容
    socket_write($socket, $data);

    // 关闭socket连接
    socket_close($socket);
}

}
?>

In the above code, we use the socket_create function to establish a socket connection and connect to the printer through the socket_connect function. Then, send the content to be printed to the printer, and finally close the socket connection.

When we use PHP to realize automatic printing of orders, we need to combine the printing template format and order data to generate printing content. Generally speaking, we can achieve automatic printing by defining printing templates and order data in PHP. Here is a simple sample code:

$data = array(

"order_id" => "123456",  // 订单号
"order_time" => "2021-08-01 12:00:00",  // 下单时间
"total_price" => 99.9,  // 总价
// 其他订单信息</p>
<p>);</p>
<p>$template = <<< EOF<br/>ORDER ID: {$data['order_id']}<br/>TIME: {$data['order_time']}<br/>TOTAL PRICE: {$data['total_price']}</p><hr/><p>EOF;</p><p>$printer_ip = "192.168.0.1"; // Printer IP address <br/>$printer_port = 9100; // Printer port number </p><p>// Establish socket connection <br/>$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);<br/>if ($socket === false) {</p><pre class="brush:php;toolbar:false">// 出错处理

} else {

// 连接打印机
$result = socket_connect($socket, $printer_ip, $printer_port);
if ($result === false) {
    // 出错处理
} else {
    // 发送打印指令
    $data = $template;  // 打印内容
    socket_write($socket, $data);

    // 关闭socket连接
    socket_close($socket);
}

}
? >

In the above code, we define an array $data containing order information, and use <<

It should be noted that in actual application, we need to make corresponding modifications and adjustments according to different printer drivers and printing template formats.

In short, through PHP language and ESC/POS instruction set, we can realize the function of automatic printing of orders. If you want to implement this feature in your own website or application, you can refer to the code and examples in this article and make corresponding modifications and optimizations based on the actual situation.

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