how to skip some words in a paragraph by php - php

Question

i have a paragraph in the database its like
$str ="this is a paragraph i show shortly and when i click on the view more it will show completely for that i am using the ajax and retrieve it "
i show this like
this is a paragraph i show shortly
php for show the first some word is
function chop_string($str, $x)// i called the function
{
$string = strip_tags(stripslashes($string));
return substr($string, 0, strpos(wordwrap($string, $x), "\n"));
}
and when user click on the view more it will display rest of it but the problem it that how to skip this this is a paragraph i show shortly and show the rest of it
i want to show the paragraph after the $x on click on view more

Answer 1

For truncating a string by character of word amount:
This SO question may be of help.
As would this one.
Here's some code that does it specifically by word count.
As far as showing more text on the click of a link goes, what I would suggest is loading the string from the database one time and format it's output. If your string is:
This is whole string pulled from my database.
Then the following code would be formatted like such:
HTML
<p class="truncate">This is the whole string <a class="showMore">Show more...</a><span> pulled from my database.</span></p>
CSS
p.truncate span { display: none; }
That way you can use Javascript (preferably through a library like jQuery which I've chosen for my code below) to hide or show more of your solution without having to make a second database request using AJAX. The following Javascript would do what you're requesting:
$("a.showMore").on("click", function() {
$(this).parent().find("span").contents().unwrap();
$(this).remove();
});
Here's a fiddle to play with!

Answer 2

I have made an example here: shaquin.tk/experiments/showmore.html.
You can view the source to see all of the code behind it. The PHP code is displayed on the page.
If you don't want to display the start string when Show more is clicked, replace the JavaScript function showMore with this:
function showMore() {
if(state == 0) {
state = 1;
document.getElementById('start').style.display = 'none';
document.getElementById('end').style.display = 'block';
document.getElementById('showmore').innerHTML = 'Show less';
document.getElementById('text-content').className = 'expanded';
document.getElementById('start').className = 'expanded';
} else {
state = 0;
document.getElementById('start').style.display = 'block';
document.getElementById('end').style.display = 'none';
document.getElementById('showmore').innerHTML = 'Show more';
document.getElementById('text-content').className = '';
document.getElementById('start').className = '';
}
}
Hope this helps.

Answer 3

Use this function :
function trim_text($string, $word_count)
{
$trimmed = "";
$string = preg_replace("/\040+/"," ", trim($string));
$stringc = explode(" ",$string);
//echo sizeof($stringc);
//echo " words <br /><br />";
if($word_count >= sizeof($stringc))
{
// nothing to do, our string is smaller than the limit.
return $string;
}
elseif($word_count < sizeof($stringc))
{
// trim the string to the word count
for($i=0;$i<$word_count;$i++)
{
$trimmed .= $stringc[$i]." ";
}
if(substr($trimmed, strlen(trim($trimmed))-1, 1) == '.')
return trim($trimmed).'..';
else
return trim($trimmed).'...';
}
}

Answer 4

$wordsBefore = 3;
$numOfWords = 7;
implode(' ', array_slice(explode(' ', $sentence), $wordsBefore, $wordsBefore+$numOfWords));
This will return the first 7 words of a sentence if you save it to a variable named sentence.