string handling

summarize article

this function takes the first x words or paragraphs from a long text and displays it as teaser with a "read more" link underneath.

function summarize( ) [ line 2 ]

full source of summarize article [ line 1 - 23 ] | download summarize article

1	<?
2	function summarize($paragraph, $limit,$link)
3	{
4	$tok = strtok($paragraph, " ");
5	while($tok)
6	{
7	$text .= " $tok";
8	$words++;
9	if(($words >= $limit) && ((substr($tok, -1) == "!")\|\|(substr($tok, -1) == ".")))
10	break;
11	$tok = strtok(" ");
12	}
13	$text .= ' '.$link;
14	return ltrim($text);
15	}
16	// use like this
17	$example = ' Heres some code to extract the first part of a long paragraph, e.g. to use as a summary.
18	Starting at the beginning of the paragraph it gets as many complete sentences as are necessary to contain $limit words.
19	For example, with $limit at 20 it would return the first two sentences of the paragraph e reading right now
20	(the first 20 words plus the rest of the sentence in which the limit was hit)';
21	$link = '<a href="#">read more</a>';
22	echo summarize($example,5,$link);
23	?>

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