printing summary of text

[dansk]

Hello there,

I am working on a news website and I would like be able to print on the front page only the first 40 or 50 words of the text that i retrieve from my DB, and if the reader wants to read more they can click on read more.

Is there a speical command for that in php or do I have to write my own code for that?

Thank you

[Chronos]

I've used the function [url=http://www.php.net/manual/en/function.substr.php]substr[/url] for that one! Works for me! I'd suggest a code of something like this:

[code]
$output = substr($db_input,0,50)."... [<a href=''>Read more</a>]";
[/code]

[dansk]

This actually works it sometimes cuts it the middle of words or do I have to create some kind of a field for Post_Summary and then out put it there?

Thank you very much for the help

[alpine]

Try:
[code]

<?php

$text = "Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.";
$words = explode(" ", $text);
$sentence = array();
$max_words = 10;

foreach($words as $word)
{
  if(count($sentence) < $max_words) $sentence[] = $word; else break;
}

echo implode(" ",$sentence);

?>

[/code]

[dansk]

Hello alpine,

I tried using it . no text would appear

and I got this warning:


Warning: implode() [function.implode]: Bad arguments.

[code]$result=mysql_query("SELECT * FROM Announ.Articles WHERE Post_Status = 'Yes' ORDER BY ID DESC LIMIT 0, 5 ");



while($news = mysql_fetch_array( $result )){


echo "<b><h3><font = Arial ></b>";
echo $news['Post_Title'];
echo "</h3></font = Arial>";
echo " Posted on: </h3>";
echo $news['Post_Date'];
echo "<br>";
if($news["Image_Link"]==NULL)
  {$news["Image_Link"]='ISL_Logo.gif';}
$mod_image=getimagesize($news["Image_Link"]);





echo "<img src='".$news["Image_Link"]."''".imageResize($mod_image[0],$mod_image[1], 150)."'>";
echo "      ";

//----------

$words = explode(" ", $news['Post']);
$sentence = array();
$max_words = 150;

foreach($words as $word)
{
  if(count($sentence) < $max_words) $sentence[] = $word; else break;
}

echo implode(" ",$news['Post']);


//------------
//$output = substr($news['Post'],0,150);
//echo $output;
echo "</br>";
printf ("<a href=\"read_more.php?ID=%s\">%s</a>", $news['ID']," <h5><b> >>read more...</h5></b>");}




?>[/code]

[trq]

At least make sure your query is working before trying to use the results from it.

[code=php:0]
$result=mysql_query("SELECT * FROM Announ.Articles WHERE Post_Status = 'Yes' ORDER BY ID DESC LIMIT 0, 5 ") or die(mysql_error());
[/code]

[alpine]

[quote]echo implode(" ",$news['Post']);[/quote]
You screwed it up man - you'r not suppose to implode the original one, there is nothing to implode there!

Keep it [color=blue]echo implode(" ",$sentence);[/color] !! (try to see what it's doing)

[dansk]

You know Alpine, I actually figured that out on my car but it was too late for me. It works now,

Can you explain that code segmant for me, it would help me alot to understand it as a new php learner.


Thank you very much for your help guys

[trq]

Why not view the manual entry for [url=http://php.net/implode]implode[/url] you'll get an explination instantly.

[Nicklas]

Here´s another way of displaying the first 10 words:

[code=php:0]<?php

$text = "Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.";
list($words) = explode(' |', preg_replace('/(.*?\s+){10}/s', '\\0|', $text));

echo $words;

?>[/code]