php - 通过 cURL POST 导致 PHP 中的空数组

Question

我正在尝试通过 cURL 命令行将数据发布到 php。在我看来它正在工作，但接收页面只显示一个空数组。
Ubuntu 20.04 LTS 上的 LAMP 堆栈，PHP 是 7.4。
这是我的命令行 cURL，-v 输出。

$ curl -v -d "name=rabbit" https://example.com/test1.php -H "connection: close"
*   Trying XXX.XXX.XXX.XXX:443...
* TCP_NODELAY set
* Connected to example.com (XXX.XXX.XXX.XXX) port 443 (#0)
* ALPN, offering h2
* ALPN, offering http/1.1
* successfully set certificate verify locations:
*   CAfile: /etc/ssl/certs/ca-certificates.crt
  CApath: /etc/ssl/certs
* TLSv1.3 (OUT), TLS handshake, Client hello (1):
* TLSv1.3 (IN), TLS handshake, Server hello (2):
* TLSv1.3 (IN), TLS handshake, Encrypted Extensions (8):
* TLSv1.3 (IN), TLS handshake, Certificate (11):
* TLSv1.3 (IN), TLS handshake, CERT verify (15):
* TLSv1.3 (IN), TLS handshake, Finished (20):
* TLSv1.3 (OUT), TLS change cipher, Change cipher spec (1):
* TLSv1.3 (OUT), TLS handshake, Finished (20):
* SSL connection using TLSv1.3 / TLS_AES_256_GCM_SHA384
* ALPN, server accepted to use http/1.1
* Server certificate:
*  subject: CN=example.com
*  start date: Oct  6 01:42:48 2021 GMT
*  expire date: Jan  4 01:42:47 2022 GMT
*  subjectAltName: host "example.com" matched cert's "example.com"
*  issuer: C=US; O=Let's Encrypt; CN=R3
*  SSL certificate verify ok.
> POST /test1.php HTTP/1.1
> Host: example.com
> User-Agent: curl/7.68.0
> Accept: */*
> connection: close
> Content-Length: 23
> Content-Type: application/x-www-form-urlencoded
>
* upload completely sent off: 23 out of 23 bytes
* TLSv1.3 (IN), TLS handshake, Newsession Ticket (4):
* TLSv1.3 (IN), TLS handshake, Newsession Ticket (4):
* old SSL session ID is stale, removing
* Mark bundle as not supporting multiuse
< HTTP/1.1 200 OK
< Date: Thu, 07 Oct 2021 19:25:25 GMT
< Server: Apache/2.4.41 (Ubuntu)
< Vary: Accept-Encoding
< Content-Length: 81
< Connection: close
< Content-Type: text/html; charset=UTF-8
<
array(1) {
  ["name"]=>
  string(4) "rabbit"
}
* Closing connection 0
* TLSv1.3 (OUT), TLS alert, close notify (256):

测试页只是

<?php
var_dump($_POST);
?>

输出是否表明它正在成功发布数据？接收服务器上的日志文件显示 200。当然已安装并启用了 php-curl。我是否缺少通过 cURL 接收 POST 所需的依赖项或配置更改？
TIA

Answer 1

我没用过curl之前是从命令行开始的，所以花了一点时间才弄清楚如何处理无数可用的选项。我创建了一个与您的 test.php 类似的文件脚本，但为了说明正在处理 POST 请求，添加了更多数据。

<?php
    /*
        The command issued on cmd line:
        curl -v -d "name=geronimo&tribe=apache&wife=alope&hobby=alcohol" --cacert "c:/wwwroot/cacert.pem" -k https://sentinel/demo/curl-test.php
    */
    ob_clean();
    
    #new data
    $_POST['date']=date( DATE_ATOM );
    $_POST['ip']=$_SERVER['REMOTE_ADDR'];
    
    #format & print output
    exit( sprintf( '%1$s%2$s%1$s', str_repeat( PHP_EOL, 1 ), print_r( $_POST, true ) ) );
    
?>

然后在命令行上发出上述(&以下)命令:

curl -v -d "name=geronimo&tribe=apache&wife=alope&hobby=alcohol" --cacert "c:/wwwroot/cacert.pem" -k https://sentinel/demo/curl-test.php

使用修改后的 POST 数据产生以下详细输出:

* About to connect() to sentinel port 443 (#0)
*   Trying 192.168.0.57... connected
* successfully set certificate verify locations:
*   CAfile: c:/wwwroot/cacert.pem
  CApath: none
* SSLv3, TLS handshake, Client hello (1):
* SSLv3, TLS handshake, Server hello (2):
* SSLv3, TLS handshake, CERT (11):
* SSLv3, TLS handshake, Server key exchange (12):
* SSLv3, TLS handshake, Server finished (14):
* SSLv3, TLS handshake, Client key exchange (16):
* SSLv3, TLS change cipher, Client hello (1):
* SSLv3, TLS handshake, Finished (20):
* SSLv3, TLS change cipher, Client hello (1):
* SSLv3, TLS handshake, Finished (20):
* SSL connection using DHE-RSA-AES256-SHA
* Server certificate:
*        subject: C=GB; ST=Angus; L=Forfar; O=TrekSafe; OU=Web Development; CN=sentinel; emailAddress=web@sentinel
*        start date: 2021-04-09 07:09:17 GMT
*        expire date: 2022-04-08 07:09:17 GMT
*        subjectAltName: sentinel matched
*        issuer: O=AO Kaspersky Lab; CN=Kaspersky Anti-Virus Personal Root Certificate
*        SSL certificate verify result: self signed certificate in certificate chain (19), continuing anyway.
> POST /demo/curl-test.php HTTP/1.1
> User-Agent: curl/7.23.1 (x86_64-pc-win32) libcurl/7.23.1 OpenSSL/0.9.8r zlib/1
.2.5
> Host: sentinel
> Accept: */*
> Content-Length: 51
> Content-Type: application/x-www-form-urlencoded
>
* upload completely sent off: 51 out of 51 bytes
< HTTP/1.1 200 OK
< Date: Fri, 08 Oct 2021 12:41:50 GMT
< Server: Apache/2.4.34 (Win64) OpenSSL/1.1.0i PHP/7.2.9
< Upgrade: h2,h2c
< Connection: Upgrade
< X-Powered-By: PHP/7.2.9
< Content-Length: 167
< Content-Type: text/html; charset=UTF-8
<

Array
(
    [name] => geronimo
    [tribe] => apache
    [wife] => alope
    [hobby] => alcohol
    [date] => 2021-10-08T13:41:50+01:00
    [ip] => 192.168.0.57
)

* Connection #0 to host sentinel left intact
* Closing connection #0
* SSLv3, TLS alert, Client hello (1):

您可以在原始代码中显示数据的大致位置看到修改后的 POST 数据。有一个 200 的事实http 响应代码应该告诉您请求成功。