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Limiting string ourput

Discuss Limiting string ourput in the General Programming Help forum on Dev Articles.
Limiting string ourput General Programming Help forum discussing Perl, Python, Scripting and/or any languages that do not fit into any of the categories above.

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  #1  
Old March 9th, 2003, 08:20 AM
guitarnoise guitarnoise is offline
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Limiting string output
This may seem like a really simple question, but I haven't been able to find anything in the forums or even the php manual. I guess I don't really know what I'm looking for. I think I am trying to limit the output of a string.

You know on a content driven website where the index page has the latest articles and the text describing the article is the first few sentences of the article? How can set something so that only the first 200 characters or so of the article body are displayed on an index page? I know this is probably beginner stuff but I've been reading tutorials and searching all over. I couldn't find what I was looking for.
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Last edited by guitarnoise : March 9th, 2003 at 08:59 AM.
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  #2  
Old March 9th, 2003, 11:24 AM
Taelo Taelo is offline
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I dunno about that,....what I did though is have a summary field in which you only allow,..say 200 characters to be posted?
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Old March 9th, 2003, 07:13 PM
guitarnoise guitarnoise is offline
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Actually, that is what I am using at the moment - a summary field. It works fine, but in some cases I want to use the first few lines from an article and it would save work repeating myself.
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Old March 10th, 2003, 12:41 AM
MERSAL MERSAL is offline
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Ok this really simple , you can use Regular Expression Functions to do that ... I will explain more with exempla :


supposed we have this article :


so many of my friends interesting to learn more about web dev.

We want show this part from article in first page (learn more about web dev.)

just we will put this tag [fpage] in beginning of part and [/fpage] in end

will be looking like that in data base ..
so many of my friends interesting to [fpage]learn more about web dev.[/fpage]

We will only cut characters between tags by Regular Expression
look simple


PHP Code:
 $article1="so many of my friends interesting to [fpage]learn more about web dev.[/fpage] ";

 preg_match("/(\[)(fpage)(])(\r\n)*(.*)(\[\/fpage\])/esiU",$article1,$article2);
echo article2; 


I wish this helpful

Sorry on my English
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  #5  
Old March 10th, 2003, 09:25 AM
guitarnoise guitarnoise is offline
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This works I suppose. But it still has a bit of extra work involved as an human editor would have to manually set different tags for each entry in the database. I was looking for something more automatic, like only showing a set number of characters as summary or just including the first paragraph.

Anyone have more ideas?
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  #6  
Old March 11th, 2003, 03:19 AM
MERSAL MERSAL is offline
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I supposed you want particular characters ...

this may be help you :

PHP Code:
<?php
$text = "so many of my friends interesting to learn more about web dev. ";
echo strlen($text) ;
$maxTextLenght=50;
  $aspace=" ";
  if(strlen($text) > $maxTextLenght ) {
     $text = substr(trim($text),0,$maxTextLenght); 
     $text = substr($text,0,strlen($text)-strpos(strrev($text),$aspace));
    $text = $text.'...';
  }
  echo '<br>';
  echo $text;
?>


You must assign max text lenght in $maxTextLenght

This from PHP.net from commnets
Last edited by MERSAL : March 11th, 2003 at 03:26 AM.
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  #7  
Old March 12th, 2003, 05:39 PM
guitarnoise guitarnoise is offline
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Thanks for the help. That last example helped me figure out exactly what I needed.
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