Re: [vox-tech] php: variables within echo

["Mark K. Kim" <lugod@cbMAPSreak.org>]

It's because $_POST is an array whereas $var is not.  Try this instead:

  echo "<p>Blue.  $_POST[elderberries]</p>";

(Remove quotes around "elderberries").  Whenever possible, I try to do
this instead for robustness:

  printf("<p>Blue.  %s</p>", $_POST['elderberries']);

Or, if printf is impractical because you need to assign the result to
a variable, this is more useful:

  $html = sprintf("<p>Blue.  %s</p>", $_POST['elderberries']);
  # ... do stuff with $html ...

Or, under some rare circumstances where you can't use sprintf for some
reason (too long to explain why this might be so, but it happens
sometimes), this technique comes in handy:

  ob_start();
  printf("<p>Blue.  %s</p>", $_POST['elderberries']);
  $html = ob_get_contents();
  ob_end_clean();
  # ... do stuff with $html ...

-Mark


On Sun, 26 Dec 2004, Peter Jay Salzman wrote:

> This works the way you'd expect any scripting language to work:
>
>    $var = "No, yellow!";
>    echo "<p>Blue.  $var</p>";
>
> However, this gives a parse error:
>
>    echo "<p>Blue.  $_POST['elderberries']</p>";
>
> Instead, it has to be written this way:
>
>    echo "<p>Blue.  " . $_POST['elderberries'] . "</p>";
>
> or this way:
>
>    $var = $_POST['elderberries'];
>    echo "<p>Blue.  $var</p>";
>
> What exactly is the difference between the "stringyness" of an automatic
> variable and a $_POST variable?  Why the parse error in code #2?
>
> Thanks,
> Pete
>
> PS- Offtopic... I quite literally ROFL'ed reading this:
>
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