Re: Easy question, return variable name
- From: "Tom" <biegel@xxxxxxxxx>
- Date: 15 Dec 2006 04:55:19 -0800
Here's why I needed this "bobo" function:
I'm currently upgrading a website to use DB_DataObjects instead of the
DB class. However, it's a process that will take almost a month
because of the large number of scripts needing the update. In
addition, I need to keep legacy support for the DB class while I'm
upgrading, without creating any additional unnecessary database
connections.
I don't know the actual answer to this, but I always assumed creating
an extension of the DB_DataObject (i.e. class DataObject_MyTable
extends DB_DataObject) would create a separate connection. To get
around this, I was using a rather ugly hack to use the existing
connection from the legacy DB object:
<?php
$DB = DB::connect($dsn, $options);
$_DB_DATAOBJECT['CONNECTIONS']['DB'] =& $DB;
?>
That $_DB_DATAOBJECT array is set in the PEAR class definition in
DB/DataObject.php thru $GLOBALS, and it stores the name of the DB
object as a key. I was trying to write a function that would create
new DB_DataObjects for all existing DB classes without having to define
each one manually.
I've since given up though... I rather enjoyed the bobo_the_clown
function though -- very clever!
Iván Sánchez Ortega wrote:
Tom wrote:
Sorry, I should have been more specific -- I need the actual name of
the variable itself, not its datatype. So, I need function that does
the following:
<?php
$myArray = array( );
$myVariable = "foobar";
echo some_function($myArray); // should echo "myArray"
echo some_function($myVariable); // should echo "myVariable"
?>
No can do. Please have a in-depth look at the PHP manual,
chapter "References to variables".
I'll try to show you the inability to know the *name* of a variable. And,
please, before replying, do RTFM.
<?php
$a = "foobar";
$b =& $a;
$c =& $a;
$d =& $a;
unset($a);
echo some_function($c); // WTF??
?>
Now, in your opinion, what should this return?? $b, $c and $d all point to
the same memory address, because of how references work. And the name $a,
which originated that memory address, does not exist. So, do we
return 'b', 'c' or 'd'??
--
----------------------------------
Iván Sánchez Ortega -ivansanchez-algarroba-escomposlinux-punto-org-
Razón #10 : Niegas vivamente la existencia de miles de dioses adorados por
otras religiones, pero te invade la ira cuando alguien niega la existencia
del tuyo.
-- Una de las jocosas, pero no por eso menos ciertas, Diez señales de
que eres un fundamentalista
.
- References:
- Easy question, return variable name
- From: Tom
- Re: Easy question, return variable name
- From: Josh
- Re: Easy question, return variable name
- From: Tom
- Easy question, return variable name
- Prev by Date: Re: USA Locations Where Not To Relocate
- Next by Date: Re: Mangled Code Mess
- Previous by thread: Re: Easy question, return variable name
- Next by thread: Re: Easy question, return variable name
- Index(es):
Relevant Pages
|
|
