[Evaldas.Grigas]

I searched funcwiki, but I still doesn't knwo what len means in this code:

PHP Code:

get_user_name ( index, name[], len ) 


FuncWiki

[Napoleon_be]

PHP Code:

new szName[33]
get_user_name(id, szName, charsmax(szName)) 


or

PHP Code:

new szName[33]
get_user_name(id szName, 32) 


[drekes]

Len stands for the max length of the string.
The max length is the size of your array - 1 (for the NULL terminator);

[Bugsy]

Always use charsmax() and not a hard-coded number. You almost always need to set a 'max-characters' value to a function putting info into a string. charsmax( StringVariable ) retrieves the correct value.

[Flipper_SPb]

Originally Posted by Bugsy Always use charsmax() and not a hard-coded number.

Why I need to use charsmax? I know, I'll never change the maxlength of the username. And 32 is enough.

[fysiks]

Originally Posted by Flipper_SPb Why I need to use charsmax? I know, I'll never change the maxlength of the username. And 32 is enough.

Because if you get in the [good] habit of using it then you will less likely make mistakes with other strings when changing the array length. That is my reason maybe others have their own reasons.

[Evaldas.Grigas]

Why can't I use it like this?

PHP Code:

if(get_user_name ( id, Evaldas.Grigas )) 


I want to check if player name is Evaldas.Grigas.

[Flipper_SPb]

How fast is charsmax()? Is it good to use it in ClientPreThink instead of hard-coded values?

[Flipper_SPb]

Originally Posted by Evaldas.Grigas Why can't I use it like this? PHP Code: if(get_user_name ( id, Evaldas.Grigas ))  .

Because it totally wrong.

PHP Code:

new szName[33]
get_user_name(id, szName, charsmax(szName))  

if(equal(szName, "Evaldas.Grigas"))
{

   //your code

} 


[Bugsy]

There's no reason not to plus its a good habit that can prevent errors and provide easier debugging on future revisions. I am now rewriting a plugin I wrote years ago and it took me a while to realize the cause of one of my errors where I added items to an array and in my for-loop I had the size hard-coded, had I used sizeof() my code would have adjusted itself for this change.

Originally Posted by Flipper_SPb How fast is charsmax()? Is it good to use it in ClientPreThink instead of hard-coded values?

It is fine to use anywhere in code. It is a macro so when your code is compiled the compiler replaces each occurrence of sizeof/charsmax with the numerical value. You are thinking of a native function which calls a dll which are good to avoid using when possible.