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function limit_text($text, $limit) {
ReplyDeleteif (strlen($text) > $limit) {
$words = str_word_count($text, 2);
$pos = array_keys($words);
$text = substr($text, 0, $pos[$limit]) . '...';
}
return $text;
}
echo limit_text('Hello here is a long sentence blah blah blah blah blah hahahaha haha haaaaaa', 5);
Outputs:
Hello here is a long ...
change the "2" to 19 to get first 20 words. This one gets the first 3 words:
ReplyDeletefunction first3words($s) {
return preg_replace('/((\w+\W*){2}(\w+))(.*)/', '${1}', $s);
}
var_dump(first3words("hello yes, world wah ha ha")); # => "hello yes, world"
var_dump(first3words("hello yes,world wah ha ha")); # => "hello yes,world"
var_dump(first3words("hello yes world wah ha ha")); # => "hello yes world"
var_dump(first3words("hello yes world")); # => "hello yes world"
var_dump(first3words("hello yes world.")); # => "hello yes world"
var_dump(first3words("hello yes")); # => "hello yes"
var_dump(first3words("hello")); # => "hello"
var_dump(first3words("a")); # => "a"
var_dump(first3words("")); # => ""
This looks pretty good to me:
ReplyDeleteA common problem when creating dynamic
web pages (where content is sourced
from a database, content management
system or external source such as an
RSS feed) is that the input text can
be too long and cause the page layout
to 'break'.
One solution is to truncate the text
so that it fits on the page. This
sounds simple, but often the results
aren't as expected due to words and
sentences being cut off at
inappropriate points.
Split the string (into an array) by <space>, and then take the first 20 elements of that array.
ReplyDeleteTry regex.
ReplyDeleteYou need something that would match 20 words (or 20 word boundaries).
So (my regex is terrible so correct me if this isn't accurate):
/(\w+\b){20}/
And here are some examples of regex in php.
Something like this could probably do the trick:
ReplyDelete<?php
$words = implode(' ', array_slice(split($input, ' ', 21), 0, 20));
use PHP tokenizer function strtok() in a loop.
ReplyDelete$token = strtok($string, " "); // we assume that words are separated by sapce or tab
$i = 0;
$first20Words = '';
while ($token !== false && $i < 20) {
$first20Words .= $token;
$token = strtok(" ");
$i++;
}
echo $first20Words;
use explode() .
ReplyDeleteExample from the docs.
// Example 1
$pizza = "piece1 piece2 piece3 piece4 piece5 piece6";
$pieces = explode(" ", $pizza);
echo $pieces[0]; // piece1
echo $pieces[1]; // piece2
note that explode has a limit function. So you could do something like
$message = implode(" ", explode(" ", $long_message, 20));
based on 動靜能量's answer:
ReplyDeletefunction truncate_words($string,$words=20) {
return preg_replace('/((\w+\W*){'.($words-1).'}(\w+))(.*)/', '${1}', $string);
}
or
function truncate_words_with_ellipsis($string,$words=20,$ellipsis=' ...') {
$new = preg_replace('/((\w+\W*){'.($words-1).'}(\w+))(.*)/', '${1}', $string);
if($new != $string){
return $new.$ellipsis;
}else{
return $string;
}
}
Truncates to nearest preceding space of target character.
ReplyDelete<?php
$str = "this is a string that is just some text for you to test with";
print(truncateString($str, 20, true) . "\n");
print(truncateString($str, 22, true) . "\n");
print(truncateString($str, 24, true) . "\n");
print(truncateString($str, 26, true, " :)") . "\n");
print(truncateString($str, 28, true, "--") . "\n");
function truncateString($str, $chars, $to_space, $replacement="...") {
if($chars > strlen($str)) return $str;
$str = substr($str, 0, $chars);
$space_pos = strrpos($str, " ");
if($to_space && $space_pos >= 0) {
$str = substr($str, 0, strrpos($str, " "));
}
return($str . $replacement);
}
?>
/* OUTPUT
this is a string...
this is a string that...
this is a string that...
this is a string that is :)
this is a string that is--
*/
You can see a demo here.
what about
ReplyDeletechunk_split($str,20);
Entry in the PHP Manual
Here is what I have implemented.
ReplyDeletefunction summaryMode($text, $limit, $link) {
if (str_word_count($text, 0) > $limit) {
$numwords = str_word_count($text, 2);
$pos = array_keys($numwords);
$text = substr($text, 0, $pos[$limit]).'... <a href="'.$link.'">Read More</a>';
}
return $text;
}
As you can see it is based off karim79's answer, all that needed changing was that the if statement also needed to check against words not characters.
I also added a link to main function for convenience. So far it hsa worked flawlessly. Thanks to the original solution provider.
Here's one I use:
ReplyDelete$truncate = function( $str, $length ) {
if( strlen( $str ) > $length && false !== strpos( $str, ' ' ) ) {
$str = preg_split( '/ [^ ]*$/', substr( $str, 0, $length ));
return htmlspecialchars($str[0]) . '…';
} else {
return htmlspecialchars($str);
}
};
return $truncate( $myStr, 50 );
Its not my own creation, its a modification of previous posts. credits goes to karim79...!!! thanks yaar...
ReplyDeletefunction limit_text($text, $limit) {
$strings = $text;
if (strlen($text) > $limit) {
$words = str_word_count($text, 2);
$pos = array_keys($words);
if(sizeof($pos) >$limit)
{
$text = substr($text, 0, $pos[$limit]) . '...';
}
return $text;
}
return $text;
}