Question 403907 in PHP Question posted in
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Php – Problem with generating tickets for event

I am trying to move a PHP website from one host (Avlux, which is shutting down) to another (DreamHost). I am having problems with code that generates event tickets. At this point, I am running the system in WampServer using Visual Studio Code to edit the programs.

This is the html code for the link to "Print" the ticket:

    [
    href="/tickets/tickets/<?=$o->id?>/?access_token=<?=$o->
    ]

And this is the function:

[```
public function access_token() {
   return base64_encode($this->id + 'ClearSight Studio');
}  
```]

The problem:
On the old host, the ticket is generated. base64_encode creates a set of characters such as: NjA4NTQ and prints a ticket. On the new host, the hyperlink is not created and the program ends.

Question: What does the question mark in "/?access_token" mean?

What I have tried:
I’ve tried isolating the code following tickets/tickets and running it standalone, but I can’t seem to do that again without generating an error that seems to mess up the entire program in Visual Studio Code.

$o->id is an integer. When I was able to run the function, access_token standalone, it could not concatenate an integer with a string. So I converted it to a string, $str_id, and replaced id?> with

Tags:

2

Answers


  1. 0

    This

    href="/tickets/tickets/<?=$o->id?>/?access_token=<?=$o->

    Means a href which includes /tickets/tickets/, followed by whatever value (presumably numeric) $o->id has, followed by /?, ending the effective part of the URL which specifies where to send the request and the ? here states that the query string comes, where you will have key=value pairs, separated by & ampersands. So, access_token is part of the query string and represents a GET parameter (which you will be able to reach via $_GET['access_token']) in your PHP code) and the value of this would be whatever you describe, presumably $o->access_token or something of the like. Your code is broken for not having a proper enclosing for your <? which is a syntax to hand over the initiative to PHP to type in something into the template, as PHP is a templating language. So you will need to figure out what $o is and fix the code above to something like

    href="/tickets/tickets/<?=$o->id?>/?access_token=<?=$o->access_token?>
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  2. 0

    this code:

    base64_encode($this->id + 'ClearSight Studio');

    results in an error:

    PHP Warning: Uncaught TypeError: Unsupported operand types: string + int in php shell

    instead, to concatenate a string with an integer, write:

    base64_encode($this->id . 'ClearSight Studio');

    It seems you were unable to see the error message. In your php.ini, set:

    display_errors = On

    … to see warnings and errors live during development. Make sure to remove this setting for production.

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