what is the best way to write statesment in the function ?

[linux1880]

Hi friends,

 

what is the best way to write function statesments ? Like if i am writing function what should i keep in mind ? Is there any magical tactis or formula ? Thanks

[premiso]

The best way is to use them when needed, you can over function a program. But really there is no "standard" for writing functions. It is more or less to get rid of redundant code, so if say you need to constantly grab data for different ID's you can make a grabData(ID) function which grabs the data for a specific ID, etc.

 

But if you have specific ideas, why not share what you are thinking and attempt to write one for what you are thinking and ask for that to be critiqued.

[JAY6390]

Yeah basically small snippets of reusable code are what functions are. If you see something you think can be used again somewhere else in your script, make it a function. I'd say have a minimum of 3 executable lines of code as a minimum. I've seen people use functions to shorten a function name, and while it's handy, it's hardly needed really

examples

function pr($expression, $return = false) {
    return print_r($expression, $return);
}

function mres($data) {
    return mysql_real_escape_string($data);
}

They're kinda handy for the users that don't have a good PHP ide but for those that do it's pointless with intelli code popups, snippet shortcuts and auto replaces

[oni-kun]

function mres($data) {
    return mysql_real_escape_string($data);
}

 

Your mres() is really just an alias the way you put it, albeit it does look better to type a few hundred times than the former. A  good example if they need to run multiple checks such as simple validation.

[JAY6390]

Yeah, and so is the pr, I Just dont see the point in typing up a function for something so minimal

[x_filed2k]

Sorry wrong post-reply area.

[JAY6390]

Are you sure you have the right thread? Nobody has mentioned columns or tables lol

[linux1880]

Thank you so much friends . I have seen lot's of builtin php function has optional arguments. How do we write optional arguments ?

[trq]

Take a look at the manual, functions.

[oni-kun]

Thank you so much friends . I have seen lot's of builtin php function has optional arguments. How do we write optional arguments ?

 

It's generally a good idea to read up on the manual, as they provide samples and useful user contributed comments which are relevant to many problems.

 

Here is a very simple example:

function myFunction ($display, $bold=false) {
      if ($bold == true) {
         echo "<b>" . $display . "</b>";
      } else { 
         echo $display;
      }
}

myFunction ('This is a string! ');
myFunction ('This is a bold string' , true);