please help

Zack

ok. I have a text file that looks like this:

I also have code that displays each line in a reverse array...

my question is, how do I limit the number of lines that are posted instead of displaying all of the posts at once?

thanks in advance

Zack

leatherback

Once you have them in your array, assuming this has two dimensions: First dimension each record, second the elements of the records: ID, DATE, TITLE, MESSAGE, (Or 0, 1, 2, 3, depending on the way you fill the array)

$min display: First message from array to display
$maxdisplay: Last message you want to display

$i=$mindisplay;
for ($i < $maxdisplay)
  {
  echo $array[$i]["ID"];  

  echo $array[$i]["DATE"];  

  echo $array[$i]["TITLE"];  

  echo $array[$i]["MESSAGE"];  

  $i++
  }

Zack

well right now I am using the explode function:


<?php
$data = file('private/news.txt');
$data = array_reverse($data);
foreach($data as $element) {
    $element = trim($element);
    $pieces = explode("|", $element);
    echo ?>

// to display something, i use the following
// $pieces[0] is the ID
// $pieces[1] is the DATE
// etc...

<? echo stripslashes($pieces[0]) ?>
<? echo stripslashes($pieces[1]) ?>
<? echo stripslashes($pieces[2]) ?>
<? echo stripslashes($pieces[3]) ?>

how would I convert it into your method???

also. I amy have misunderstood you, or you/me, but I don't want to use min and max on the IDs because the IDs change. I want to loop it 10 or 15 times to show the 10 latest posts, much like using the LIMIT function for mysql

leatherback

Hi,

you misunderstood me: It does what you intended: It will get the elements from the array,starting from the $mindisplay'th element untill the $maxdisplay'th element.

To add it to your code:

$data = file('private/news.txt'); 
$data = array_reverse($data); 



$i=$mindisplay; 
for ($i < $maxdisplay) 
  { 
    $element = trim($array[$i]); 
    $pieces = explode("|", $element); 
    echo stripslashes($pieces[0]);
    echo stripslashes($pieces[1]);
    echo stripslashes($pieces[2]) ;
    $i++;
    }

Zack

ok, but I dont understand how to limit it to 10... do I define $maxdisplay = 10?

Zack

can someone please help me?

batman

Here's question. How do you recieve how many rows are in the result after fopen() reads a file?

Zack

someone gave me this code when I asked in the newbie section:


$i=0; 

$fd = fopen ("/tmp/inputfile.txt", "r"); 
while (!feof($fd)) { 
$i++; 
$buffer = fgets($fd, 4096); 
echo $buffer;
} 
fclose ($fd);

That will echo the number of lines in the file plus one. So if there are 20 lines in the file, that will print '21'...

now can anyone tell me how to use min and max?

neon

Try this.

$max_rows = 3; //how many rows
$data = file('news.txt');
$data = array_reverse($data);
for($i=0;$i<$max_rows;$i++) {
     $element = trim($data[$i]);
     $parts = explode("|",$element);
     echo stripslashes($parts[0]);
     echo stripslashes($parts[1]);
     echo stripslashes($parts[2]);
     echo stripslashes($parts[3]);
}

I'm not sure if you were looking for that, but give it a try.

Zack

nevermind...

Zack

thanks neon... i did something very similar:


<?PHP
$max_rows = 4; //how many rows 
  $data = file('private/news.txt'); 
  $data = array_reverse($data);
       $i=-1; 
  while ($i<$max_rows) {
       $i++; 
       $element = trim($data[$i]); 
       $pieces = explode("|",$element); 
    echo ?>

<table border=0 cellpadding=0 cellspacing=0 width=550 frame=void rules=none>
    <tr> 
      <td width=10 height=10 bgcolor='<? echo "$content_table"; ?>'></td>
      <td width=520 height=10 bgcolor='<? echo "$content_table"; ?>'></td>
      <td width=10 height=10 bgcolor='<? echo "$content_table"; ?>'></td>
      <td width=10 height=10></td>
    </tr>
    <tr> 
      <td width=10 height=10 bgcolor='<? echo "$content_table"; ?>'></td>
            <td width=520 height=10 bgcolor='<? echo "$content_table"; ?>'>
			&nbsp;&nbsp;&nbsp;<font face='Arial' size=3><b><i><? echo stripslashes($pieces[2]) ?></i></b></font> 
              <hr color="<? echo "$body_dark"; ?>" size="2" width="80%" align="left"></td>
      <td width=10 height=10 bgcolor='<? echo "$content_table"; ?>'></td>
      <td width=10 height=10 bgcolor='<? echo "$body_dark"; ?>'></td>
    </tr>
    <tr> 
      <td width=10 height=10 bgcolor='<? echo "$content_table"; ?>'></td>
      <td width=520 bgcolor='<? echo "$content_table"; ?>' valign="top" align="justify"><div align="justify">
                <font face='Arial' size=2><? echo stripslashes($pieces[3]) ?></font>
                 </div></td>
      <td width=10 height=10 bgcolor='<? echo "$content_table"; ?>'></td>
      <td width=10 height=10 bgcolor='<? echo "$body_dark"; ?>'></td>
    </tr>
    <tr> 
      <td width=10 height=10 bgcolor='<? echo "$content_table"; ?>'></td>
      <td width=520 height=10 bgcolor='<? echo "$content_table"; ?>'></td>
      <td width=10 height=10 bgcolor='<? echo "$content_table"; ?>'></td>
      <td width=10 height=10 bgcolor='<? echo "$body_dark"; ?>'></td>
    </tr>
    <tr> 
      <td width=10 height=10 bgcolor='<? echo "$content_table"; ?>'></td>
      <td width=520 height=10 valign=middle align=right bgcolor='<? echo "$content_table"; ?>'>
	  <font face='Arial' size=1><i>Post ID: <? echo $pieces[0] ?></i>
	  <br><i>Posted by Zack on <? echo $pieces[1] ?></i></font></td>
      <td width=10 height=10 bgcolor='<? echo "$content_table"; ?>'></td>
      <td width=10 height=10 bgcolor='<? echo "$body_dark"; ?>'></td>
    </tr>
    <tr> 
      <td width=10 height=10 bgcolor='<? echo "$content_table"; ?>'></td>
      <td width=520 height=10 bgcolor='<? echo "$content_table"; ?>'></td>
      <td width=10 height=10 bgcolor='<? echo "$content_table"; ?>'></td>
      <td width=10 height=10 bgcolor='<? echo "$body_dark"; ?>'></td>
    </tr>
    <tr> 
      <td width=10 height=10></td>
      <td width=520 height=10 bgcolor='<? echo "$body_dark"; ?>'></td>
      <td width=10 height=10 bgcolor='<? echo "$body_dark"; ?>'></td>
      <td width=10 height=10 bgcolor='<? echo "$body_dark"; ?>'></td>
    </tr>
  </table><br>



<? ;
}
?>

that's all of the code including layout... the code I changed is at the top...

if you want to see it in action, go to http://zshornick.junker.org

there is a lot of stuff I still plan to do with it...