Question

相关问题：PHP - execute web script as command line script?

所以我有一个脚本，我们称它为MainScript.php，它执行以下操作：

包括我制作的另一个脚本，OtherScript.php以及facebook SDK脚本。
询问用户输入。它使用OtherScript.php中的一个函数来帮助解决这个问题，因为OtherScript.php是我编写的facebook应用程序脚本，而MainScript.php是脚本的前端。 OtherScript.php的函数为用户生成登录URL。
收到输入后，MainScript.php使用shell_exec（）启动后台进程，根据用户的输入开始处理数据。启动的过程是ThirdScript.php，它将数据交给OtherScript.php进行处理，然后将结果写入用户可以访问的文件。

我必须这么做的原因是因为如果我只是让MainScript.php处理数据，或者将OtherScript.php作为子进程运行来处理数据，那么在我的服务器上它将无法供其他用户访问;它会忙于处理数据。我需要它来处理数据，但仍可供其他用户使用。为此，我每次用户访问并向MainScript.php输入数据时都会生成一个新进程，以便它保持可用状态，并迅速处理用户的数据。

然而，我得到的错误是最奇怪的;当MainScript.php使用shell_exec（）启动ThirdScript.php，然后刷新页面以说明＆＃34;您的数据正在处理＆＃34;或者用户的东西，MainScript.php抛出以下错误：

PHP解析错误：语法错误，意外T_STRING，期待T_CONSTANT_ENCAPSED_STRING或＆＃39;（＆＃39;在第6行的/home7/fantatv1/public_html/MainScript.php

第6行是：

使用Facebook \ FacebookSession;

我不确定问题是什么，因为当我直接从命令行运行ThirdScript.php时，只需将一些参数硬编码到其中（以模拟从MainScript.php用户收集的数据），它运行得很好。没有错误。

但是，我有一个理论认为，由于MainScript.php是＆＃34;使用＆＃34; ing命名空间，然后OtherScript也使用它们，当用户将数据输入到表单上时，MainScript.php会刷新自身。页面，调用＆＃34;使用＆＃34;有一些问题在已经存在的名称空间上＆＃34;使用＆＃34; d。这只是一个想法，但我不知道实际问题是什么。任何人都可以给我一些建议或帮助吗？

MainScript.php：

<?php

session_start();
require_once ('otherevent.php');

use Facebook\FacebookSession;
use Facebook\FacebookRedirectLoginHelper;
use Facebook\FacebookRequest;
use Facebook\FacebookResponse;
use Facebook\FacebookSDKException;
use Facebook\FacebookRequestException;
use Facebook\FacebookServerException;
use Facebook\FacebookOtherException;
use Facebook\FacebookAuthorizationException;
use Facebook\GraphObject;
use Facebook\GraphSessionInfo;
use Facebook\GraphUser;



$display_login = 0;
$display_logout = 0;


if ( isset( $_SESSION ) && isset( $_SESSION['fb_token'] )) {
  // create new session from saved access_token
  $session = new FacebookSession( $_SESSION['fb_token'] );

  // validate the access_token to make sure it's still valid
  try {
    if ( !$session->validate() ) {
      $session = null;
      $display_login = 1;
    }else{
    $display_logout = 1;
    }
  } catch ( Exception $e ) {
    // catch any exceptions
    $session = null;
    $display_login = 1;
  }

} else {
  // no session exists

  try {
    $session = $helper->getSessionFromRedirect();
    if(isset($session)){
    if ( !$session->validate() ) {
      $session = null;
      $display_login = 1;
    }else{
    $display_logout = 1;
    }
    }else{
      $display_login = 1;
    }
  } catch( FacebookRequestException $ex ) {
  echo'<p>There was a problem with your facebook session. Please re-login to Facebook, and then try loading the app again.</p>';
    //echo $ex;
    // When Facebook returns an error
  } catch( Exception $ex ) {
  echo'<p>There was a validation issue with your previous session. Please log in again.</p>';
    // When validation fails or other local issues
    //echo $ex;
  }

}

if(isset($session)){
  $_SESSION['fb_token'] = $session->getToken();
  // create a session using saved token or the new one we generated at login
  $session = new FacebookSession( $session->getToken() );
}







if($display_login == 1){
//Display the login URL for the app. To do this, we must first -obtain- the login URL for the app, since the app is not actually accessible to the user.



echo "<a href=\"";
loginurl(); //This is a function in OtherScript.php, which simply outputs the login URL.
echo "\">Login</a>";

}else if($display_logout == 1){
  $request = new FacebookRequest( $session, 'GET', '/me' );
  $response = $request->execute();
  // get response
  $GraphObject = $response->getGraphObject(GraphUser::className());

  // print profile data
  $name = $GraphObject->getName();
  if($GraphObject->getID() == xxxxxxxxxxxx){ //Makes sure I'm the only one logged in (currently I'm the only person allowed to use the app, and I haven't started working on a database for authorized users just yet).
echo 'You are logged in, ' . $name . '.';
if(isset($_POST['thetextbox'])){


echo"<br>Your request is being evaluated. Please visit this page to see the progress on your request. *URL TO USER FILE GOES HERE*";

shell_exec('php ThirdScript.php token="' . $session->getToken() . '" text="' . $_POST['thetextbox']); //Clumsy way of handing the data off to a separate process/script. Ideally, this shell command will spawn a new process, that evaluates and thus writes to file all the data the user wants, using $session and all other data passed via $_GET through the shell.


}
echo'<p><form method="POST" action="">
  Enter Random Crap Here: <input type="text" name="thetextbox"> <br>
 <input type="submit" value="Submit">
  </form>
  </p>';
}else{
echo "You are not authorized to use this app, $name.";
  }
  }


echo '

</body>
</html>

';



?>

Otherscript.php：

<?php

require_once( 'Facebook/FacebookSession.php' );
require_once( 'Facebook/FacebookRedirectLoginHelper.php' );
require_once( 'Facebook/FacebookRequest.php' );
require_once( 'Facebook/FacebookResponse.php' );
require_once( 'Facebook/FacebookSDKException.php' );
require_once( 'Facebook/FacebookRequestException.php' );
require_once( 'Facebook/FacebookServerException.php' );
require_once( 'Facebook/FacebookOtherException.php' );
require_once( 'Facebook/FacebookAuthorizationException.php' );
require_once( 'Facebook/GraphObject.php' );
require_once( 'Facebook/GraphSessionInfo.php' );
require_once( 'Facebook/GraphUser.php' );

use Facebook\FacebookSession;
use Facebook\FacebookRedirectLoginHelper;
use Facebook\FacebookRequest;
use Facebook\FacebookResponse;
use Facebook\FacebookSDKException;
use Facebook\FacebookRequestException;
use Facebook\FacebookServerException;
use Facebook\FacebookOtherException;
use Facebook\FacebookAuthorizationException;
use Facebook\GraphObject;
use Facebook\GraphSessionInfo;
use Facebook\GraphUser;



  // start session
session_start();

// init app with app id and secret
FacebookSession::setDefaultApplication( 'xxxxxxxxxxxxxxx','xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx' );

// login helper with redirect_uri
$helper = new FacebookRedirectLoginHelper( 'http://google.com' );
function loginurl() {
global $helper;
  echo $helper->getLoginUrl( array( 'email' ) );
}







function evaluate($token, $text){
//Do stuff! The actual app does some stuff and then writes to a file. When I run ThirdScript.php from the command line, I see the file being written to, and it works -perfectly-. When I run it from a browser via MainScript.php (which is the only way to run these from a browser, so that MainScript.php is the front end), it has a parse error and stops running, and nothing is written to the file.
}
?>

Thirdscript.php：

<?php
session_start();
require_once ('otherevent.php');
if(isset($_GET["text"]) && isset($_GET['token'])){
evaluate($_GET['token'], $_GET['text']);
}
?>

Answer 1

PHP解析错误：语法错误，意外T_STRING，期待T_CONSTANT_ENCAPSED_STRING或＆＃39;（＆＃39; in ...

当解释器完全不了解命名空间时，就会发生这种情况，即使用的PHP版本低于5.3。

另请参阅this 3v4l，它会为这些版本发出相同的解析错误。

PHP＆＃34;使用＆＃34;运行多个脚本时抛出错误的语句

1 个答案: