PHP Tokenize a String by its length

[Mavenos]

Hi Web Masters,

Just wondering wether you can help us to come up with some tokenize
script.

My problem is wanted to display a LONG content into a short para (by
giving minimum letter lenght)

I mean if I have a 2 page content - just I want to display only 4 lines
having 200 letters then follows the content with "....." at the end of
short pera.

Can anybody help in this regards,
Thanks in advance

[Geoff Berrow]

Message-ID: <11*********************@g49g2000cwa.googlegroups. com> from
Mavenos contained the following:

I mean if I have a 2 page content - just I want to display only 4 lines
having 200 letters then follows the content with "....." at the end of
short pera.

Can anybody help in this regards,
Thanks in advance

I wrote this function to do just that. It has the added feature that it
truncates on a space rather than the middle of the word.

$string is the long string to truncate
$length is the maximum truncated length
$url is the URL you should go to to see the whole paragraph

<?php
function truncate($string,$length,$url){
$string=trim($string);
if(strlen($string)>$length){
$string=substr($string,0,$length);
$n=0;
while(substr($string,-1)!=chr(32)){
$n++;
$string=substr($string,0,$length-$n);
}
$string=trim($string)."... <a href='$url'><em>more</em></a>";
}
return $string;
}

//example usage
echo truncate("the quick brown fox jumps over the lazy
dog",35,"anyurl");
?>

--
Geoff Berrow (put thecat out to email)
It's only Usenet, no one dies.
My opinions, not the committee's, mine.
Simple RFDs http://www.ckdog.co.uk/rfdmaker/

[Lüpher Cypher]

Mavenos wrote:

Hi Web Masters,

Just wondering wether you can help us to come up with some tokenize
script.

My problem is wanted to display a LONG content into a short para (by
giving minimum letter lenght)

I mean if I have a 2 page content - just I want to display only 4 lines
having 200 letters then follows the content with "....." at the end of
short pera.

Can anybody help in this regards,
Thanks in advance

How about

$maxLetters = 300;
$shortContent = substr($longContent,0,$maxLetters).
(strlen($longContent) > $maxLetters ? "..." : "");
luph

[Lüpher Cypher]

Geoff Berrow wrote:

Message-ID: <11*********************@g49g2000cwa.googlegroups. com> from
Mavenos contained the following:

I mean if I have a 2 page content - just I want to display only 4 lines
having 200 letters then follows the content with "....." at the end of
short pera.

Can anybody help in this regards,
Thanks in advance

I wrote this function to do just that. It has the added feature that it
truncates on a space rather than the middle of the word.

$string is the long string to truncate
$length is the maximum truncated length
$url is the URL you should go to to see the whole paragraph

<?php
function truncate($string,$length,$url){
$string=trim($string);
if(strlen($string)>$length){
$string=substr($string,0,$length);
$n=0;
while(substr($string,-1)!=chr(32)){
$n++;
$string=substr($string,0,$length-$n);
}
$string=trim($string)."... <a href='$url'><em>more</em></a>";
}
return $string;
}

//example usage
echo truncate("the quick brown fox jumps over the lazy
dog",35,"anyurl");
?>

Shorter :)

function trancate($string,$length) {
$string = substr(trim($string),0,$length);
$string = substr($string,0,strrpos(trim($string)," "));
return "$string...";
}

[Geoff Berrow]

Message-ID: <HWstf.630$i%4.305@trndny08> from Lüpher Cypher contained
the following:

Shorter :)

function trancate($string,$length) {
$string = substr(trim($string),0,$length);
$string = substr($string,0,strrpos(trim($string)," "));
return "$string...";
}

ahhhh, strrpos() Not used that one before.
--
Geoff Berrow (put thecat out to email)
It's only Usenet, no one dies.
My opinions, not the committee's, mine.
Simple RFDs http://www.ckdog.co.uk/rfdmaker/

[Geoff Berrow]

Message-ID: <HWstf.630$i%4.305@trndny08> from Lüpher Cypher contained
the following:

Shorter :)

function trancate($string,$length) {
$string = substr(trim($string),0,$length);
$string = substr($string,0,strrpos(trim($string)," "));
return "$string...";
}

You don't need the last trim()

$string = substr($string,0,strrpos($string," "));

--
Geoff Berrow (put thecat out to email)
It's only Usenet, no one dies.
My opinions, not the committee's, mine.
Simple RFDs http://www.ckdog.co.uk/rfdmaker/

[Lüpher Cypher]

Geoff Berrow wrote:

Message-ID: <HWstf.630$i%4.305@trndny08> from Lüpher Cypher contained
the following:

Shorter :)

function trancate($string,$length) {
$string = substr(trim($string),0,$length);
$string = substr($string,0,strrpos(trim($string)," "));
return "$string...";
}

You don't need the last trim()

$string = substr($string,0,strrpos($string," "));

Actually, it's needed :)
Suppose $string = "aaa bbb ccc" and $length = 9, then:
first substr leaves "aaa bbb "
if we don't have the second trim, strrpos returns 8 and second substr
returns "aaa bbb " so, "aaa bbb ..." will be returned instead of "aaa
bbb..." :)
luph

[Geoff Berrow]

Message-ID: <sSttf.3225$gq4.1485@trndny04> from Lüpher Cypher contained
the following:

Actually, it's needed :)
Suppose $string = "aaa bbb ccc" and $length = 9, then:
first substr leaves "aaa bbb "
if we don't have the second trim, strrpos returns 8 and second substr
returns "aaa bbb " so, "aaa bbb ..." will be returned instead of "aaa
bbb..." :)

Think again.

strrpos returns 7

;-)

--
Geoff Berrow (put thecat out to email)
It's only Usenet, no one dies.
My opinions, not the committee's, mine.
Simple RFDs http://www.ckdog.co.uk/rfdmaker/

[Lüpher Cypher]

Geoff Berrow wrote:

Message-ID: <sSttf.3225$gq4.1485@trndny04> from Lüpher Cypher contained
the following:

Actually, it's needed :)
Suppose $string = "aaa bbb ccc" and $length = 9, then:
first substr leaves "aaa bbb "
if we don't have the second trim, strrpos returns 8 and second substr
returns "aaa bbb " so, "aaa bbb ..." will be returned instead of "aaa
bbb..." :)

Think again.

strrpos returns 7

;-)

Actually:

$str = "aaa bbb ccc";
$str = substr($str,0,9);
echo strrpos($str," ");
Outputs 8 :) There is a mistake, though:

instead of
$str = substr($str,0,strrpos(trim($str)," "));
it should be
$str1 = trim(substr($str,0,strrpos($str," ")));

Otherwise if it's trimmed first, it'll become "aaa bbb" and strrpos will
return 3, resulting in "aaa" :)
luph

[Geoff Berrow]

Message-ID: <ZFwtf.636$i%4.91@trndny08> from Lüpher Cypher contained the
following:

Actually:

$str = "aaa bbb ccc";
$str = substr($str,0,9);
echo strrpos($str," ");
ah yes, missed the double space...

Outputs 8 :) There is a mistake, though:

I knew something was wrong. :-)

--
Geoff Berrow (put thecat out to email)
It's only Usenet, no one dies.
My opinions, not the committee's, mine.
Simple RFDs http://www.ckdog.co.uk/rfdmaker/

[Chung Leong]

I usually use a regular expression so that I'm not breaking in the
middle of a word:

preg_match('/^.{0,400}\b/s', $text, $m);
$text_shorten = $m[0];