我没有找到解决方案，我在库中对在web中找到的其他代码执行代码http://zakilive.com/tag/google-cloud-messaging-php-tutorial/，因为在Google中不存在php的示例，我有下一个代码：
<?php
define( "API_ACCESS_KEY", "my api key" );
$msg = array
(
'document' => array(
'type'=>'PLAIN_TEXT',
'content'=>"Michelangelo Caravaggio, Italian painter, is known for
'The Calling of Saint Matthew'."
),
'encodingType'=>'UTF8',
);
$headers = array
(
'Authorization: Bearer ' . API_ACCESS_KEY,
'Content-Type: application/json'
);
$ch = curl_init();
curl_setopt( $ch,CURLOPT_URL, 'https://language.googleapis.com/v1beta1/documents:annotateText' );
curl_setopt( $ch,CURLOPT_POST, true );
curl_setopt( $ch,CURLOPT_HTTPHEADER, $headers );
curl_setopt( $ch,CURLOPT_RETURNTRANSFER, true );
curl_setopt( $ch,CURLOPT_SSL_VERIFYPEER, false );
curl_setopt( $ch,CURLOPT_POSTFIELDS, json_encode( $msg ) );
$result = curl_exec($ch );
curl_close( $ch );
echo $result;完整的回复是：｛"error"：｛"code"：400，"message"："AnnotateTextRequest.features为空。"，"status"："INVALID_ARGUMENT"，"details"：[｛"@type"："type.googleapis.com/google.rpc.BadRequest"，"fieldViolations"：[{"field"："AnnotateTextRequest.features"，"description"："未指定任何功能。"｝]｝｝
我仍然无法用其他语言编写代码。
请帮帮我
API是：https://cloud.google.com/natural-language/docs/
我修复了我的代码，我缺少"功能"，我在页面中看到：https://cloud.google.com/natural-language/reference/rest/v1beta1/documents/annotateText和https://cloud.google.com/natural-language/reference/rest/v1beta1/documents/annotateText#Features我在$msg-var:中发布我的代码
$msg = array
(
'document' => array(
'type'=>'PLAIN_TEXT',
'content'=>"Michelangelo Caravaggio, Italian painter, is known for
'The Calling of Saint Matthew'."
),
'features'=>array(
"extractSyntax"=> true,
"extractEntities"=> false,
"extractDocumentSentiment"=> false
),
'encodingType'=>'UTF8',
);现在我得到了很好的回答，但现在我的问题是如何自动生成API_ACCESS_KEY，但我想这是另一个问题。