Solved

using ellipses to truncate data in a cell

Posted on 2008-10-04
13
668 Views
Last Modified: 2012-05-05
I have a  td cell that shows data from a 1000 character input text box.
Can I display this:

<td>Display only the first 100 characters of a ....</td>

instead of

<td>Display all 1000 characters etc, etc.</td>

by automatically inserting an ellipses after a certain number of characters?

<table class="records">
<tr>
        <th>q1</th>
        <th>q2</th>
</tr>
<?
 
mysql_select_db($database_athconn, $athconn);
$query = "SELECT * FROM results";
$result = mysql_query($query, $athconn);
$num = mysql_numrows($result);
mysql_close();
$i=0;
while ($i < $num)
{
        $field1= mysql_result($result,$i,"q1");
        $field2= mysql_result($result,$i,"q2");
 
echo "<tr><td>$field1</td><td>$field2</td></tr>";
 
$i++;
}
 
?>
</table>

Open in new window

0
Comment
Question by:seanpowell
  • 6
  • 4
  • 3
13 Comments
 
LVL 82

Expert Comment

by:hielo
ID: 22641224

while ($i < $num)
{
        $field1= mysql_result($result,$i,"q1");
        $field2= mysql_result($result,$i,"q2");
 	$field1=preg_replace('\S+$','...',substr($field1,0,100));
 	$field2=preg_replace('\S+$','...',substr($field2,0,100));
echo "<tr><td>$field1</td><td>$field2</td></tr>";
 
$i++;
}

Open in new window

0
 
LVL 110

Expert Comment

by:Ray Paseur
ID: 22641950
You can use substr - it is simpler code and might be a bit faster than REGEX (however I have not tested it for speed).

If you need a function to break on word boundaries, please post back here and I'll give you the one I use for "teasers" after the article headlines.

Best, ~Ray
while ($i < $num)
{
        $field1= substr(mysql_result($result,$i,"q1"),0,100) . '...';
        $field2= substr(mysql_result($result,$i,"q2"),0,100) . '...';
 
echo "<tr><td>$field1</td><td>$field2</td></tr>";
 
$i++;
}

Open in new window

0
 
LVL 31

Author Comment

by:seanpowell
ID: 22642281
Well that's a tough call - I think both will likely work for me.
The only problem is that a blank record still returns the ellipses.

Thanks guys,
Sean
0
Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 82

Expert Comment

by:hielo
ID: 22642384
>>You can use substr
The "problem" with that is that the ellipsis are likely to start right in the middle of a word. My suggestion makes sure that the ellipsis starts right after a word.

>>The only problem is that a blank record still returns the ellipses.
try the attached code:
while ($i < $num)
{
        $field1= trim(mysql_result($result,$i,"q1"));
        $field2= trim(mysql_result($result,$i,"q2"));
	   if( strlen($field1) > 100 )
 		$field1=preg_replace('\S+$','...',substr($field1,0,100));
	   if( strlen($field2) > 100 )
 		$field2=preg_replace('\S+$','...',substr($field2,0,100));
echo "<tr><td>$field1</td><td>$field2</td></tr>";
 
$i++;
}

Open in new window

0
 
LVL 31

Author Comment

by:seanpowell
ID: 22644324
Thanks hielo - I believe that is returning blank cells instead of any content.
0
 
LVL 82

Assisted Solution

by:hielo
hielo earned 50 total points
ID: 22644951
sorry, this:
'\S+$'

should have been:
'#\S+$#'

while ($i < $num)
{
        $field1= trim(mysql_result($result,$i,"q1"));
        $field2= trim(mysql_result($result,$i,"q2"));
         if( strlen($field1) > 100 )
             $field1=preg_replace('#\S+$#','...',substr($field1,0,100));
         if( strlen($field2) > 100 )
             $field2=preg_replace('#\S+$#','...',substr($field2,0,100));
echo "<tr><td>$field1</td><td>$field2</td></tr>";
 
$i++;
}


IF tha still does not work try this:
while ($i < $num)
{
        $field1= mysql_result($result,$i,"q1");
        $field2= mysql_result($result,$i,"q2");
 	$field1=preg_replace('#\S+$#','...',substr($field1,0,100));
 	$field2=preg_replace('#\S+$#','...',substr($field2,0,100));
	
	if( $field1=="..."){$field1="";}
	if( $field2=="..."){$field2="";}
echo "<tr><td>$field1</td><td>$field2</td></tr>";
 
$i++;
}

Open in new window

0
 
LVL 110

Expert Comment

by:Ray Paseur
ID: 22644969
Here is the function that I use - sorry I could not get back to post sooner, but hope it's still helpful to you. ~Ray
/* ************************************************************************** */
// RETURN FIRST FEW WHOLE WORDS FOLLOWED BY ELLIPSES
// $length IS MINIMUM TRUNCATION CHARACTER COUNT
function teaser_fragment($text, $length=32) {
	if (strlen($text) < $length) {
return $text; }
 
	$x = 0;
	while ($x == 0) {
		if (substr($text,$length,1) == ' ') { $x = 1; } else { $length++; }
	}
	$text = substr($text,0,$length) . "...";
return $text;
}
/* ************************************************************************** */

Open in new window

0
 
LVL 31

Author Comment

by:seanpowell
ID: 22649106
hielo - I'm sorry, that doesn't work as expected, it only adds ellipses if the count is reached in the middle of a word.

Ray - I guess I'm putting the 2 functions together incorrectly? I like the simplicity of the code...
function teaser_fragment($text, $length=32) {
        if (strlen($text) < $length) {
return $text; }
 
        $x = 0;
        while ($x == 0) {
                if (substr($text,$length,1) == ' ') { $x = 1; } else { $length++; }
        }
        $text = substr($text,0,$length) . "...";
return $text;
}
 
while ($i < $num)
{
        $field1= substr(mysql_result($result,$i,"q1"),0,100) . '...';
        $field2= substr(mysql_result($result,$i,"q2"),0,100) . '...';
 
echo "<tr><td>$field1</td><td>$field2</td></tr>";
 
$i++;
}

Open in new window

0
 
LVL 110

Expert Comment

by:Ray Paseur
ID: 22649876
You might want to ACTUALLY CALL THE FUNCTION!  ;-)

Try this and see if it doesn't get you where you want to go.  You may have to tinker with the length parameter (presently default = 32 and your setting = 100).  You might decrease it to 96, etc. just to get the best looking output.

Best, ~Ray
function teaser_fragment($text, $length=32) {
        if (strlen($text) < $length) {
return $text; }
 
        $x = 0;
        while ($x == 0) {
                if (substr($text,$length,1) == ' ') { $x = 1; } else { $length++; }
        }
        $text = substr($text,0,$length) . "...";
return $text;
}
 
while ($i < $num)
{
        $field1= teaser_fragment(mysql_result($result,$i,"q1"),100);
        $field2= teaser_fragment(mysql_result($result,$i,"q2"),100);
 
echo "<tr><td>$field1</td><td>$field2</td></tr>";
 
$i++;
}

Open in new window

0
 
LVL 31

Author Comment

by:seanpowell
ID: 22649990
Yes - that might help...

The db is timing out arounf row 9 - in your experience is there anything in that code that may cause that to happen?
0
 
LVL 31

Author Comment

by:seanpowell
ID: 22650086
Displays correctly again once the code is removed.
<?php require_once('Connections/athconn.php'); ?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
</head>
<body>
 
<table class="records">
	<tr>
		<th>#</th>
		<th>q1</th>
		<th>q2</th>
		<th>q3</th>
	</tr>
 
<?
mysql_select_db($database_athconn, $athconn);
$query = "SELECT * FROM results";
$result = mysql_query($query, $athconn);
$num = mysql_numrows($result);
mysql_close();
$i=0;
function teaser_fragment($text, $length=32) {
        if (strlen($text) < $length) {
return $text; }
        $x = 0;
        while ($x == 0) {
                if (substr($text,$length,1) == ' ') { $x = 1; } else { $length++; }
        }
        $text = substr($text,0,$length) . "...";
return $text;
}
 
while ($i < $num) {
	$field1= mysql_result($result,$i,"q1");
	$field2= teaser_fragment(mysql_result($result,$i,"q2"),96);
	$field3= teaser_fragment(mysql_result($result,$i,"q3"),96);
	$i++;
	echo "<tr>";
	echo "<td>$i</td><td>$field1</td><td>$field2</td><td>$field3</td>";
	echo "</tr>";
}
?>
</table>
 
</body>
</html>

Open in new window

0
 
LVL 110

Accepted Solution

by:
Ray Paseur earned 450 total points
ID: 22650182
Well, if there is never a blank at the end of the input, it will loop infinitely.  Let's try this modified function (my original is too dependent on my data).
function teaser_fragment($text, $length=32) {
        if (strlen($text) < $length) {
return $text; }
 
// ADD A BLANK AT THE END TO FORCE STOP
        $text .= ' ';
        $x = 0;
        while ($x == 0) {
                if (substr($text,$length,1) == ' ') { $x = 1; } else { $length++; }
        }
        $text = substr($text,0,$length) . "...";
return $text;
}

Open in new window

0
 
LVL 31

Author Comment

by:seanpowell
ID: 22650338
Thank you guys - all is working perfectly now. The fragment seems to be a really nice way to handle that.
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Length of for loop to be dynamic 2 31
while read ID; do 4 53
Convert php array to comma seperated list 19 31
Find RGB colors from a screen. 2 15
Generating table dynamically is the most common issue faced by php developers.... So it seems there is a need of an article that explains the basic concept of generating tables dynamically. It just requires a basic knowledge of html and little maths…
Part of the Global Positioning System A geocode (https://developers.google.com/maps/documentation/geocoding/) is the major subset of a GPS coordinate (http://en.wikipedia.org/wiki/Global_Positioning_System), the other parts being the altitude and t…
The viewer will learn how to count occurrences of each item in an array.
The viewer will learn how to create and use a small PHP class to apply a watermark to an image. This video shows the viewer the setup for the PHP watermark as well as important coding language. Continue to Part 2 to learn the core code used in creat…

680 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question