Truncates Sentences

This code truncates a paragraph to specified sentences:

$entry = "This is the first sentence. And the second sentence. The third sentence. And the fourth.";
$sentence = preg_split("/[\.\!\?]/", $entry);
for($i=0; $i<count($sentence);>
echo("$sentence[$i]<br />\n");
}</count($sentence);>

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From my codix.