The aim of this thread: post PHP functions you have created to make your coding experience better.

Let's try to keep it at one function per post.

Provide the function, an explanation of what problem it solves and an example usage.

This should be fun, there's love in sharing .

I'll go first
====================
I use this to generate a random ID of a specified length. The length you want is given in the argument. I cannot remember when I wrote this but I use it on every project I can remember.

example usage
$member_id = genId(15); //creates an alphanumeric string with 15 characters.
=======================
function genId($length) {
    $characters = "0123456789abcdefghijklmnopqrstuvwxyz";
    $string = "";   

    for ($v = 0; $v < $length; $v++) {
        $string .= $characters[mt_rand(0, strlen($characters))];
    }

    return $string;
}
=======================

Lets step it up a bit.
Let us assume that you created ehm a website and then you specify that users should enter only an alphanumeric character
as their usernames. How will you validate that?

*dhtml:

Lets step it up a bit.
Let us assume that you created ehm a website and then you specify that users should enter only an alphanumeric character
as their usernames. How will you validate that?

function isAlphaNumeric($var)
{
if(ctype_alnum($var){
return TRUE;
}else{
return FALSE;
}
}

function isAlphaNumeric($var) {return ctype_alnum($var);}

Very good i_want_to

*dhtml:

Very good i_want_to

function isAlphaNumeric($var) {return ctype_alnum($var);}

Kai!!!!!!!! You too much. Nicely sempelized,  U b sabi boy!

Can also be written as:

function isAlphaNumeric($var) {return ctype_alnum($var) ? true : false;}

Or:

function isAlphaNumeric($var) {return ctype_alnum($var)==true ? true : false;}

Anyway, this is a good post. I must add that i never knew there was a direct function in
php to solve this task - until you posted it @i_want_to - i normally use preg_match:

function isAlphaNumeric($var) {return preg_match("/^([a-z0-9])+$/i",$text);}

Never came across that function. Thank you guys. Live use for this will be in enforcing higher password strength. Keep the functions coming devs. I will compile them and keep an updated copy on the first post for anyone to easily download.

atlast a reasonable thread. will post mine but i hope this una bot no go use me learn skills?

Hello Everyone,
To keep the script from being executed when the page loads, you can put it into a function. A function will be executed by a call to the function. You may call a function from anywhere within a page, for more details please check out the following link,

[url]http://mindstick.com/Articles/192928ef-1d2d-457e-9272-0fbae26af17a/?PHP%20User%20Defined%20Functions[/url]


Thanks !!!!!

*dhtml:

function isAlphaNumeric($var) {return ctype_alnum($var) ? true : false;}

given how shortened you have made this
wont it be cool to use the inbuilt function directly in the actual code?

echo ctype_alnum($var)?"Thanks for submitting alphanumeric":"Please input alphanumeric";

Of course, you can use it directly na.

A reasonable thread! Praise God.

Ternary Operators can be confusing as hell.

Ok this function generates  a random alphanumeric password.


function randP(){

    $p = substr (md5 (uniqid (rand (),true)), 3, 10);
    return $p;




}

Mobinga:

A reasonable thread! Praise God.

Ternary Operators can be confusing as hell.

Ok this function generates  a random alphanumeric password.


function randP(){

    $p = substr (md5 (uniqid (rand (),true)), 3, 10);
    return $p;




}

Does the md5() fill a particular need?

Dual Core:

Does the md5() fill a particular need?

Not at all. Just to more it more random.