php中对字符串的基本操作

<?php
$source = "hello1,hello2,hello3,hello4,hello5";//按逗号分离字符串
$hello = explode(',',$source);

for($index=0;$index<count($hello);$index++)
{
echo $hello[$index];echo "</br>";
}
?>

<?php
$date = "04/30/1973";
list($month, $day, $year) = split ('[/.-]', $date);
echo "Month: $month; Day: $day; Year: $year<br />\n";
?>