Multiple of 4

[atlanta]

Hi all,

 

I wanted to know what function i should use to make a if statement that will retrue if the number is a multiple of 4 for instance

 

ex.

if($number == "0" || multiple of 4 function)

{

echo "<tr>";

}

 

Thanks In advance

[awpti]

<?php

if($number == 0 OR ($number %4)) 
{
  //....
}
else
{
  // ...
}
?>

[atlanta]

That didnt worked it echoed on every number..

[haku]

if($num % 4 == 0)
{
    // do something
}

[laffin]

different ways

always check if $num has a value (if 0 ya will get an error, divide by zero)

 

if($num && (($num/4)==intval($num/4))  { echo true; } else { echo false; }

 

or

 

if($num && !($num % 4)) { echo true; } else { echo false; }

 

I even think this one will work

if (!( 3 & $num)) { echo true; } else { echo false; }

 

note on the last one, no $num check is done. prolly the fastest as well, since no division is needed but dusn work on floats, just integers.

 

[atlanta]

Thanks Guys i got it working !

[atlanta]

Hey another quick question ok i got the the <tr> to show on every multiple of 4 but how do i make the </tr> show on every count of 4 with starting at 0??

 

if ($cnt == "0" || ($cnt % 4) == 0)
{
echo "<tr>";
}
?>
<td>
       <a href="<?php echo $urlpath . $file; ?>" target="_blank" rel="lightbox[album]" title="<?=$exten[0]?>">
      <img src="<?php echo $urlpath . $file; ?>" alt="<?=$exten[0]?>" width="158" height="168" />
       </a>
</td>
<?
if (function??)
{
echo "</tr>";
}
?>

[Zane]

if ($cnt == "0" || ($cnt % 4) == 0)

 

this has to be in a loop somewhere for $cnt to even be changing...

 

or else it will only work as soon as it loads

 

so to answer your question....change $cnt.

[atlanta]

oh sorry it is in the look which is above it somewhat

 

for ($cnt = $start; $cnt < $end; $cnt++) {

    $file = $files[$cnt];

[Zane]

for every count of $cnt?

 

just echo it...it's already in the loop....

if you just echo it....it'll be echoed to the end.

[atlanta]

Here maybe this will help if i added all the code its kinda confusing without it

 

if(isset($_GET['folder']))
{
?>
<table class="phototable">
<?
for ($cnt = $start; $cnt < $end; $cnt++) {
    $file = $files[$cnt];

    $exten = explode('.',$file);

if ($cnt == "0" || ($cnt % 4) == 0)
{
echo "<tr>";
}
?>
<td>
       <a href="<?php echo $urlpath . $file; ?>" target="_blank" rel="lightbox[album]" title="<?=$exten[0]?>">
      <img src="<?php echo $urlpath . $file; ?>" alt="<?=$exten[0]?>" width="158" height="168" />
       </a>
</td>
<?
if ($cnt == "3" || $cnt == "7" || $cnt == "11")
{
echo "</tr>";
}
?>

<?
} // end for
?>
<?
} // end if

 

ok so what i want to do is have it eacho </tr> on every 4th count you get me ?

so that after the forth coloumn it will start a new row

[Zane]

mix this up a little bit

 

if ($cnt == "0" || ($cnt % 4) == 0)
{
echo "";
}

 

to this

 

if($cnt == 0 || !($cnt % 4))
    echo "";

if(($cnt % 4) != false)
    echo "\n";

 

 

[atlanta]

I tried the one u suggested but it puts every picture on a new row.. i want 4 on a row then </tr> then <tr> and start the next 4

[laffin]

lol

 

i think i said using the booleans was prolly easiest.

 

since 4 is a magic number, in the word of bits

 

<?php
  echo "<TABLE border=1>";
  for($i=0;$i<=20;$i++)
  {
if(!($i & 3)) echo "<tr>";
echo "<td>$i</td>";
if(($i & 3)==3) echo "</tr>";
  }
  if(($i&=3)) echo "<TD COLSPAN=". (4-$i) ."> </TD></TR>";
  echo "</table>";
  
?>

[haku]

You are going to kick yourself for not realizing this.

 

Change this:

 

if ($cnt == "0" || ($cnt % 4) == 0)
{
echo "<tr>";
}

 

To this:

 

if ($cnt == "0" || ($cnt % 4) == 0)
{
echo "</tr><tr>";
}

 

This will end the previous row and start the next one.

[Zane]

I guess I should have wrote mine like this

 

if(!($cnt % 4))
    echo "\n";
if($cnt == 0 || !($cnt % 4))
    echo "\n";

 

@haku...that pretty much is the answer, but then you'll have an unneeded

at the very beginning...causing a validation error.