如何在某个索引后停止爆炸功能.例如
<?php
$test="The novel Prognosis Negative by Art Vandelay expresses protest against many different things. The story covers a great deal of time and takes the reader through many different places and events, as the author uses several different techniques to really make the reader think. By using a certain type of narrative structure, Vandelay is able to grab the reader’s attention and make the piece much more effective and meaningful, showing how everything happened";
$result=explode(" ",$test);
print_r($result);
?>
如果只想使用前10个元素怎么办($ …