RE: [PHP] references a functions

[Rick Emery]

What happened when you tried?

-Original Message-
From: javier [mailto:[EMAIL PROTECTED]]
Sent: Thursday, April 04, 2002 1:01 PM
To: [EMAIL PROTECTED]
Subject: [PHP] references a functions


I trying to code a kind of DB wrapper.
So when is dbQuery turn I run into trouble.
I read in php manual that refrences are not like C pointers. They just 
point to the same content.

I want to return the result from a mysql_query
but if I do something like this:

 function bdConsultar($strCon) {
 $idRes = @mysql_query($strCon);
 return $idRes;
 }

Should be called like this?

$myID = bdConsultar(Select * from users);


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Re: [PHP] references a functions

[Rasmus Lerdorf]

Note that you rarely change a result set, so there is very little point in
returning a reference to it given PHP's shallow copy implementation.  And
in your case you are just returning a resource id which you definitely
aren't going to change.

But if for some reason you feel it is important (please explain why) then
this is the syntax:

function  bdConsultar($strCon) {
$idRes = mysql_query($strCon);
return $idRes;
}

$myID =  bdConsultar(Select * from users);

But again, I don't think you are quite understanding references.

-Rasmus

On Thu, 4 Apr 2002, javier wrote:

 I trying to code a kind of DB wrapper.
 So when is dbQuery turn I run into trouble.
 I read in php manual that refrences are not like C pointers. They just
 point to the same content.

 I want to return the result from a mysql_query
 but if I do something like this:

  function bdConsultar($strCon) {
  $idRes = mysql_query($strCon);
  return $idRes;
  }

 Should be called like this?

 $myID = bdConsultar(Select * from users);


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 PHP General Mailing List (http://www.php.net/)
 To unsubscribe, visit: http://www.php.net/unsub.php



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Re: [PHP] references a functions

[javier]

I thought that apart from returning an id the result set was created 
within the scope of the function so when the function finishes the 
resulted was deleted;

But since is just an id an the result is stored somewhere else I 
wouldn't need any reference.

btw where can I read about references besides php manual?

Rasmus Lerdorf wrote:
 Note that you rarely change a result set, so there is very little point in
 returning a reference to it given PHP's shallow copy implementation.  And
 in your case you are just returning a resource id which you definitely
 aren't going to change.
 
 But if for some reason you feel it is important (please explain why) then
 this is the syntax:
 
 function  bdConsultar($strCon) {
   $idRes = mysql_query($strCon);
   return $idRes;
 }
 
 $myID =  bdConsultar(Select * from users);
 
 But again, I don't think you are quite understanding references.
 
 -Rasmus


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Re: [PHP] references a functions

[javier]

Opossed to my thoughts worked fine.

Rick Emery wrote:
 What happened when you tried?
 
 -Original Message-
 From: javier [mailto:[EMAIL PROTECTED]]
 Sent: Thursday, April 04, 2002 1:01 PM
 To: [EMAIL PROTECTED]
 Subject: [PHP] references a functions
 
 
 I trying to code a kind of DB wrapper.
 So when is dbQuery turn I run into trouble.
 I read in php manual that refrences are not like C pointers. They just 
 point to the same content.
 
 I want to return the result from a mysql_query
 but if I do something like this:
 
  function bdConsultar($strCon) {
  $idRes = @mysql_query($strCon);
  return $idRes;
  }
 
 Should be called like this?
 
 $myID = bdConsultar(Select * from users);
 
 



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