README

重要：支持的PHP版本已更新为7.2+。若要与7.0或7.1版本一起使用，请使用之前的版本 1.5.4

简介

基于PHP的HL7 v2.x解析、生成和发送库，灵感来源于著名的Perl Net-HL7包。

安装

composer require aranyasen/hl7

用法

解析

// Create a Message object from a HL7 string
$msg = new Message("MSH|^~\\&|1|\rPID|||abcd|\r"); // Either \n or \r can be used as segment endings
$pid = $msg->getSegmentByIndex(1);
echo $pid->getField(3); // prints 'abcd'
echo $msg->toString(true); // Prints entire HL7 string

// Get the first segment
$msg->getFirstSegmentInstance('PID'); // Returns the first PID segment. Same as $msg->getSegmentsByName('PID')[0];

// Check if a segment is present in the message object
$msg->hasSegment('PID'); // return true or false based on whether PID is present in the $msg object

// Check if a message is empty
$msg = new Message();
$msg->isempty(); // Returns true

创建新消息

// Create an empty Message object, and populate MSH and PID segments... 
$msg = new Message();
$msh = new MSH();
$msg->addSegment($msh); // Message is: "MSH|^~\&|||||20171116140058|||2017111614005840157||2.3|\n"

// Create any custom segment
$abc = new Segment('ABC');
$abc->setField(1, 'xyz');
$abc->setField(2, 0);
$abc->setField(4, ['']); // Set an empty field at 4th position. 2nd and 3rd positions will be automatically set to empty
$abc->clearField(2); // Clear the value from field 2
$msg->setSegment($abc, 1); // Message is now: "MSH|^~\&|||||20171116140058|||2017111614005840157||2.3|\nABC|xyz|\n"

// Create a defined segment (To know which segments are defined in this package, look into Segments/ directory)
// Advantages of defined segments over custom ones (shown above) are 1) Helpful setter methods, 2) Auto-incrementing segment index 
$pid = new PID(); // Automatically creates PID segment, and adds segment index at PID.1
$pid->setPatientName([$lastname, $firstname, $middlename, $suffix]); // Use a setter method to add patient's name at standard position (PID.5)
$pid->setField('abcd', 5); // Apart from standard setter methods, you can manually set a value at any position too
unset $pid; // Destroy the segment and decrement the id number. Useful when you want to discard a segment.

// Creating multiple message objects may have an unexpected side-effect: segments start with wrong index values (Check tests/MessageTest for explanation)...
// Use 4th argument as true, or call resetSegmentIndices() on $msg object to reset segment indices to 1
$msg = new Message("MSH|^~\&|||||||ORM^O01||P|2.3.1|", null, true, true);
// ... any segments added here will now start index from 1, as expected.

// Sometimes you may want to have exact index values, rather than auto-incrementing for each instance of a segment
// Use 5th argument as false...
$hl7String = "MSH|^~\&|||||||ORU^R01|00001|P|2.3.1|\n" . "OBX|1||11^AA|\n" . "OBX|1||22^BB|\n";
$msg = new Message($hl7String, null, true, true, false); // $msg contains both OBXs with given indexes in the string

// Create a segment with empty sub-fields retained
$msg = new Message("MSH|^~\\&|1|\rPV1|1|O|^AAAA1^^^BB|", null, true); // Third argument 'true' forces to keep all sub fields
$pv1 = $msg->getSegmentByIndex(1);
$fields = $pv1->getField(3); // $fields is ['', 'AAAA1', '', '', 'BB']

// Create/send message with segment-ending bar character (|) removed
$msg = new Message("MSH|^~\\&|1|\nABC|||xxx\n", ['SEGMENT_ENDING_BAR' => false]);
$msg->toString(true); // Returns "MSH|^~\&|1\nABC|||xxx\n"
(new Connection($ip, $port))->send($msg); // Sends the message without ending bar-characters (details on Connection below) 

// Specify custom values for separators, HL7 version etc.
$msg = new Message("MSH|^~\\&|1|\rPV1|1|O|^AAAA1^^^BB|", ['SEGMENT_SEPARATOR' => '\r\n', 'HL7_VERSION' => '2.3']);

将消息发送到远程监听器

$ip = '127.0.0.1'; // An IP
$port = '12001'; // And Port where a HL7 listener is listening
$message = new Message($hl7String); // Create a Message object from your HL7 string

// Create a Socket and get ready to send message. Optionally add timeout in seconds as 3rd argument (default: 10 sec)
$connection = new Connection($ip, $port);
$response = $connection->send($message); // Send to the listener, and get a response back
echo $response->toString(true); // Prints ACK from the listener

确认（ACK）

处理从远程HL7监听器返回的确认（ACK）消息...

$ack = (new Connection($ip, $port))->send($message); // Send a HL7 to remote listener
$returnString = $ack->toString(true);
if (strpos($returnString, 'MSH') === false) {
    echo "Failed to send HL7 to 'IP' => $ip, 'Port' => $port";
}
$msa = $ack->getSegmentsByName('MSA')[0];
$ackCode = $msa->getAcknowledgementCode();
if ($ackCode[1] === 'A') {
    echo "Recieved ACK from remote\n";
}
else {
    echo "Recieved NACK from remote\n";
    echo "Error text: " . $msa->getTextMessage();
}

从给定的HL7消息创建确认（ACK）响应

$msg = new Message("MSH|^~\\&|1|\rABC|1||^AAAA1^^^BB|", null, true);
$ackResponse = new ACK($msg);

创建确认（ACK）对象时可以传递选项

$msg = new Message("MSH|^~\\&|1|\rABC|1||^AAAA1^^^BB|", null, true);
$ackResponse = new ACK($msg, ['SEGMENT_SEPARATOR' => '\r\n', 'HL7_VERSION' => '2.5']);

API

此包公开了多个公共方法，以便方便地处理HL7。一些示例包括

1. 假设您有一个消息对象（例如，$msg = new Message(file_get_contents('somefile.hl7'));）

    $msg->toFile('/path/to/some.hl7'); // Write to a file
    $msg->isOru(); // Check if it's an ORU
    $msg->isOrm(); // Check if it's an ORM

访问docs\README获取关于可用API的详细信息

所有段级别的getter/setter API可以使用两种方式 -

• 如果没有提供位置索引作为参数（getters的第一个参数，setters的第二个参数），则使用标准索引。
  $pid->setPatientName('John Doe') -> 根据HL7 v2.3 标准设置位置5的患者姓名
  $pid->getPatientAddress() -> 从标准第11个位置获取患者地址

• 要使用自定义位置索引，请将其作为参数提供
  $pid->setPatientName('John Doe', 6) -> 在PID段中第6个位置设置患者姓名
  $pid->getPatientAddress(12) -> 从第12个位置获取患者地址

待办事项

• 数据验证
• 通过正则表达式搜索并返回段/字段/索引
• 定义更多段