i'm familiar with php but i'm still confusing with this strange character ....

[Twey]

No, I'm not rms.

[smansakra]

RMS IS USED by dolphin and ray software.
http://www.boonex.com/unity/forums/#...2009-02-02.htm

[Twey]

Er, I just noticed:

The @ symbol checks for errors (will return true if it finds errors, otherwise false).

That's untrue. @ simply causes all errors to be ignored — the return value of the expression is not changed. That means that this:

mysql_connect('localhost', 'root', '');
if(@mysql_connect('localhost', 'root', '')){
  die("Error!");
} 

This will check to see if there are any errors in connecting to the database, if there are die Error!.

is untrue: in fact it's completely backwards. If the connection succeeds the value of mysql_connect() is truthy, so that will die iff the call succeeds.

I said that errors were ignored, but that's not necessarily entirely true: if track_errors is enabled in the server config, the error generated by the expression will still be assigned to the global variable $php_errormsg.

[smansakra]

so , what is it:

&$name , on this function--> getNickName(&$p);


and what is it :
$$name

?????

[JasonDFR]

I don't know about the & in your example.

For the double $$:

$$name is a variable that has the name of the value of $name. Confusing huh?

If you do something like:

$name = 'jason'; // Simple variable

$$name = 'jason'; // Create a variable. Replace $name with it's value, jason, thus creating $jason = jason

echo "$jason"; // This outputs jason, even though we didn't type $jason = 'jason'; 

This is pretty confusing at first. And probably not something a beginner is going to use often. I've used it once for making new variables from information pulled out of a database.

[Twey]

And probably not something a beginner is going to use often.

It's not something that anyone should use. Ever. If you find yourself using it, you're doing it wrong. Probably you would be better off with an associative array.

The & in the above example makes a reference: it means that in code, those two variables are actually two names for the same thing. Performing an operation on one is the same as performing an operation on the other. For example:

function brokenAddThree($n) {
  // $n is a new copy of $m, so this modification doesn't affect $n itself.
  $n += 3;
}
$m = 2;
brokenAddThree($m);
$m // 2

function workingAddThree(&$n) {
  // Here, $n is the same thing as $m, so modifying it also modifies $m.
  $n += 3;
}
$m = 2;
workingAddThree($m);
$m // 5

Making the references explicitly at calltime, which seems to be what you were doing above, works but is deprecated:

function deprecatedAddThree(&$n) {
  $n += 3;
}
$m = 2;
deprecatedAddThree(&$m); // Throws a deprecation warning
$m // 5

[smansakra]

I don't know about the & in your example.

you don't know?

ups, you should study php again.... he he he
i see many of them are on dolphin and orca( boonex.com products )

hi, i agree with twey

[gurmeet]

@ sign is used when we want to execute any function n ignore any error that is bring produced by this function...
for instance there is any function , when we are caling that function it gives us a warning message, by using '@' sign that warning message will be discarded...