lol, i made a never ending loop with arrays

sarmenhb · 01-20-2008, 12:33 AM

i was playing around with arrays when i stumbled upon this lol

<?php

function br($num) {
for ($i=0; $i < $num;$i++) { echo "<br />"; }
}

//arrays

$fruits = array('apple','orange','banana','kiwi','plamgranit e');

while(list($key,$value) = each($fruits))

{
echo "Current:::::".br(1).current($fruits);
echo "[$key]:$value".br(1);
echo "Previous:::::".br(1).prev($fruits);

}

?>

xenon · 01-20-2008, 12:37 AM

Welcome to the programming world! Wanna see something kewler? Check this out:

PHP Code:


			
while(true) { }

There ya have it. The easiest infinite loop :)

sarmenhb · 01-20-2008, 12:38 AM

lol, thanks

sarmenhb · 01-20-2008, 12:43 AM

but if i place this exit(); between the curleys then the loop will end.

but

this cant be ended. (unless a value is changed in a variable.)

while($i != 1 && $i=0) { echo "loop<br>"; }

xenon · 01-20-2008, 12:55 AM

Quote:

Originally Posted by sarmenhb

but if i place this exit(); between the curleys then the loop will end.

exit breaks the execution of the entire script, not just the loop. So yeah, your "implementation" of an infinite loop is so much clever (exit can be put anywhere). But what's the point of it? infinite loop = no script (aka you can't actually have a working script and also an infinite loop at the same time). So why even bother trying to create an infinite loop?

sarmenhb · 01-20-2008, 12:59 AM

Quote:

Originally Posted by xenon

exit breaks the execution of the entire script, not just the loop. So yeah, your "implementation" of an infinite loop is so much clever (exit can be put anywhere). But what's the point of it? infinite loop = no script (aka you can't actually have a working script and also an infinite loop at the same time). So why even bother trying to create an infinite loop?

its usefull to showoff the non php programmers of the cool things us newbees can make (rofl)

xenon · 01-20-2008, 01:00 AM

Right...sorry for taking away your enthusiasm then...my bad

sarmenhb · 01-20-2008, 01:01 AM

Quote:

Originally Posted by xenon

Right...sorry for taking away your enthusiasm then...my bad

none taken, i just got bored lol

sketchMedia · 01-21-2008, 09:45 AM

how about (my personal fav, recursive infinate loops):

PHP Code:


			
lol();
function lol()
{
    return lol();
}

or even

PHP Code:


			
for (;;) 
{
    echo 'lollll';
}

Salathe · 01-21-2008, 12:02 PM

Infinite loops from recursive functions/methods can be a particularly nasty trap to fall into! In a similar (erm, identical) vein to sketch's last code snippet here's another quick one-liner:

PHP Code:


			
for (;print 'lol';);

sketchMedia · 01-21-2008, 01:10 PM

Quote:

Infinite loops from recursive functions/methods can be a particularly nasty trap to fall into!

yep, idd it is lol.
you need to be VERY careful with recursion if you know how functions work then it should be apparent why. To cut a very long story short you risk crashing stuff as you are repeatedly calling the function thus producing function call overhead for each funcion being called, thus using up alot of memory.

TlcAndres · 01-21-2008, 01:54 PM

Infinite loops are bad I crashed my computer thrice because I could not find the loop -.-

sketchMedia · 01-21-2008, 04:00 PM

i remember a fellow student at uni do it once whilst the lab tutor was watching, luckly it didnt crash the computer, he laughed for quite a while, so did I come to think of it hehe

Orc · 01-21-2008, 05:21 PM

Brilliant thread, I must say. :P

Daniel · 01-22-2008, 10:26 PM

PHP Code:


			
<?php while(phpinfo()); ?>

has to be my favourite. Plenty of information there, (p.s. No need to put an ob_start(); before that)

Wildhoney · 01-22-2008, 10:31 PM

Who'd have thought such a thread would have become so popular

! You folks do surprise me sometimes.

Orc · 01-23-2008, 12:10 AM

Quote:

Originally Posted by Wildhoney

Who'd have thought such a thread would have become so popular

! You folks do surprise me sometimes.

Agreed. (chars)

cherries · 01-24-2008, 04:54 PM

PHP Code:


			
<?php while(1) print 'lol'; ?>

sarmenhb · 01-24-2008, 09:51 PM

haha, yet another popular treath by me.

Invisible Loop

for(;;) { echo "<br/>"; }

TlcAndres · 01-25-2008, 12:48 AM

PHP Code:


			

while($total == 1)
{
   ++$x;
   $total = ((10 * pow($x,3) + 8 * pow($x,2) + 10 * $x + 8) / (pow($x,2) + 1)) - 10 * $x - 7;
   echo ('foo');

}

(don't quote me on the math, haven't tried it)