Forkort kommentar med 20 tegn

Brug substr hvis det er PHP vi snakker om.

Eks:
$text = "Bla bla noget tekst";
$start = 0;
$slut = 20;

echo substr($text, $start, $slut);

ja det er php vi snakker om :)

ved bare ikke hvorddan jeg få den til at virke på den kodestump jeg har skrevet :S

Prøv at smide din top5 kommentarer kode op.

<?php

/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Update of Georgi Avramov's latest_comments.php by BadDog
Made more campatiable for CN 1.4 and also to include
title of the news for which the comment belongs to make it
usable in a sidebar.

UPDATE AGAIN BY FUNimations
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
//absolute path to cutenews
$mPath = "http://kimbert.dk/blog";
$reverse = false; //false = newest comments first.
require_once( "blog/data/config.php" );
require_once( "blog/inc/functions.inc.php" );
//number of latest comments to show
if(!isset($comments_number)) $comments_number = 5;

//URL to where you include your news, example: http://site.com/news.php
$site_url = 'http://kimbert.dk/inde.php';

//more help on the format: http://www.php.net/manual/en/function.date.php
$date_format = 'd M y';

//can use: {url}, {name}, {date}, {comment}, {ip}, {mail}, {newsid}, {comid}, {title}
$ctemplate = '<a href="{url}">{name}; <font size="1" color="#999999">{comment}</font></a><br><br>';


$latest_comments = array();

$all_comments = file("blog/data/comments.txt");

foreach($all_comments as $comment_line)
{
$comment_line_arr = explode("|>|", $comment_line);
$newsid = $comment_line_arr[0];
$comment_arr = explode("||", $comment_line_arr[1]);
foreach($comment_arr as $single_comment)
{
$single_comment_arr = explode("|",$single_comment);
$latest_comments[$single_comment_arr[0]] = array_merge( array( $newsid ), $single_comment_arr );

}
}
if($reverse)
ksort($latest_comments);
else
krsort($latest_comments);

$t=0;
foreach($latest_comments as $comment){
$output = $ctemplate;

if ($comment[2]){

$title = get_title($comment[0], $mPath); //make sure path is passed to prevent open errors
$category = get_cat($comment[0], $mPath); //make sure path is passed to prevent open errors

$output = str_replace("{url}", $site_url."?subaction=showcomments&id={newsid}&ucat={category}#{comid}", $output);
$output = str_replace("{name}", $comment[2], $output);
$output = str_replace("{title}", $title, $output);
$output = str_replace("{mail}", $comment[3], $output);
$output = str_replace("{ip}", $comment[4], $output);
$output = str_replace("{comment}", $comment[5],$output);
$output = str_replace("{date}", date($date_format, $comment[1]), $output);
$output = str_replace("{newsid}", $comment[0], $output);
$output = str_replace("{comid}", $comment[1], $output);
$output = str_replace("{category}", $category, $output);
$output = replace_comment("show", $output);

echo $output . "\n";
$t++;
}
if($t == $comments_number) break;
}

function get_title($id, $mPath){

$all_news = file("blog/data/news.txt");
foreach ($all_news as $news) {
$news_arr = explode("|", $news);
if ($news_arr[0] == "$id") {
$title = $news_arr[2];
}
}
$title = ereg_replace("<[^>]*>","",$title); // incase there is html tags
$title = str_stop($title, 1); // keep the title length under 40 chars, edit to taste
return $title;
}

function get_cat($id, $mPath){

$all_news = file("blog/data/news.txt");
foreach ($all_news as $news) {
$news_arr = explode("|", $news);
if ($news_arr[0] == "$id") {
return $news_arr[6];
}
}
return $title;
}

function str_stop($string, $max_length){
if (strlen($string) > $max_length){
$string = substr($string, 0, $max_length);
$pos = strrpos($string, " ");
if ($pos === false) {
return substr($string, 0, $max_length)."...";
}
return substr($string, 0, $pos)."...";
}else{
return $string;
}
}
unset($reverse);
?>

Dette burde virke:

$output = str_replace("{url}", $site_url."?subaction=showcomments&id={newsid}&ucat={category}#{comid}", $output);
$output = str_replace("{name}", $comment[2], $output);
$output = str_replace("{title}", $title, $output);
$output = str_replace("{mail}", $comment[3], $output);
$output = str_replace("{ip}", $comment[4], $output);
$output = str_replace("{comment}", str_stop($comment[5], 20), $output);
$output = str_replace("{date}", date($date_format, $comment[1]), $output);
$output = str_replace("{newsid}", $comment[0], $output);
$output = str_replace("{comid}", $comment[1], $output);
$output = str_replace("{category}", $category, $output);
$output = replace_comment("show", $output);

Jeg bruger den function som er lavet i bunden "str_stop". Den bruger substr og sætter punktummer bag teksten hvis den er længer end 20.

Udskift følgende linje:
$output = str_replace("{comment}", $comment[5],$output);
Med følgende:
$output = str_replace("{comment}", substr($comment[5],0,20),$output);

Du kan evt. også udvide den med punktummer til sidst, hvis strengen er mere end 20 tegn, som fx:
if(strlen($comment[5]) > 20) {
$output = str_replace("{comment}", substr($comment[5],0,20)."...",$output);
} else {
$output = str_replace("{comment}", $comment[5],$output);
}

mstorgaard - Hvis du lige læser koden igennem er der lavet en function til de punktummer.

function str_stop($string, $max_length){
if (strlen($string) > $max_length){
$string = substr($string, 0, $max_length);
$pos = strrpos($string, " ");
if ($pos === false) {
return substr($string, 0, $max_length)."...";
}
return substr($string, 0, $pos)."...";
}else{
return $string;
}
}

Jeg havde ikke kigget hele koden igennem, jeg gav bare lige en løsning, men jeg kan se, at den funktion gør hele processen lidt hurtigere.