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-   -   PHP Functions (http://forums.winamp.com/showthread.php?t=185497)

ryan 4th July 2004 17:56
PHP Functions
 
I'm trying to create a function that will let me have as many arguments as I want, that does the same thing as empty() (returns true if any of the values are empty, false if they're all not empty)

PHP Code:
function empty_extended() {
$arguments = func_get_args();
foreach($arguments as $value) {
    if(empty($value)) { $result = "true"; }
    else { $result = "false"; }
}
if($result = "true") { return true; }
else { return false; }
} 
Is what I've been messing with for a while, but it always returns false.

Any help would be appreciated.

baafie 4th July 2004 21:22
PHP Code:
function empty_extended() 
{
    $arguments = func_get_args();
    
    foreach($arguments as $value) 
    {
            if(empty($value)) return true;
    }
    return false;
} 
Note that if the function is called with no arguments, the function will return false anyway. So, you may want to change it to this..

PHP Code:
function empty_extended() 
{
    if (func_num_args() == 0) return true;
    
    $arguments = func_get_args();
        
    foreach($arguments as $value) 
    {
            if(empty($value)) return true;
    }
    return false;
} 

ryan 5th July 2004 02:29
Much thanks baaf ^__^

*Gives you a cookie*

griffinn 5th July 2004 13:55
I prefer this incomprehensible one-liner:
PHP Code:
function empty_extended() {
  return (array_reduce(func_get_args(),create_function('$i,$j','return $i+(empty($j)?0:1);'),0)!=func_num_args());
} 
(No kidding. It works. But it's computationally more expensive than what you already have.)

xzxzzx 6th July 2004 22:55
Can I play too?

PHP Code:
function empty_extended() 
{ 
    foreach(func_get_args() as $value) { 
        if(empty($value)) return true;
    } 
    return (func_num_args() == 0);
} 

ryan 7th July 2004 00:07
This would make a fun contest :P

xzxzzx 7th July 2004 00:32
Mine would win the "least computationally expensive" award, I'm pretty sure.

griffinn 7th July 2004 03:25
PHP Code:
function empty_extended() {
  $args = func_get_args();
  return empty($args) || (array_search(FALSE,$args) !== FALSE);
} 
This function terminates earlier if called with no arguments; I win.

xzxzzx 7th July 2004 08:36
PHP Code:
function empty_extended(){
    return !($a = func_get_args()) || in_array(false, $a);
} 
Bow to the master, foolish mortals. :p

Mine is the most concise, and the least computationally expensive out of those on this thread.

Beat that. :D

mark 7th July 2004 08:47
10 Party
20 Get started
30 goto 10


i win

griffinn 7th July 2004 10:08
/me bows to xzxzzx while muttering, "I'll get you next time, grrr..." under the breath

But well done. :)

ryan 7th July 2004 10:57
PHP Code:
function empty_extended() {
//Function coming soon
} 
You guys are good :)

baafie 7th July 2004 11:03
PHP Code:
function empty_extended($arg = 0){
    return !$arg || !($a = func_get_args()) || in_array(false, $a);
} 
Slightly bigger but (probably) computationally faster.

:D

xzxzzx 7th July 2004 18:43
baaf: Yup, it is computationally faster (I tested it). Damn. I still have the most concise, though. :p

Jaak 7th July 2004 19:14
this would get fun if php had inline assembler :p


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