Web Dev> Select first n words of a sentence

$sentence = "This is my sentence, there are many like it but this one is mine. What do you think of it?";
$n = 10; // Customize to however many words you want to actually show
$teaser = implode(' ', array_slice(explode(' ', $sentence), 0, $n));
echo $teaser."…READ MORE

Which should result in:
This is my sentence, there are many like it but…READ MORE

$sentence = "This is my sentence, there are many like it but this one is mine. What do you think of it?";
$n = 10; // Customize to however many words you want to actually show
$teaser = implode(' ', array_slice(explode(' ', $sentence), 0, $n));
echo $teaser."…READ MORE

Which should result in:
This is my sentence, there are many like it but…READ MORE