[b]implode[/b]
(PHP 3, PHP 4 )
把数组变成字符串，前面一个字符是连接数组的字符

implode -- Join array elements with a string
Description
string implode ( string glue, array pieces)
example：
[code]
$array = array('lastname', 'email', 'phone');
$comma_separated = implode("---test--", $array);

echo $comma_separated;
?> [/code]
结果为：lastname---test--email---test--phone

[b]split[/b]
(PHP 3, PHP 4 )

split -- 用正则表达式将字符串分割到数组中

[code]
// 分隔符可以是斜线，点，或横线
$date = "04/30/1973";
list($month, $day, $year) = split ('[/.-]', $date);
echo "Month: $month; Day: $day; Year: $year

";
?>

[/code]
结果：Month: 04; Day: 30; Year: 1973

[b]explode[/b]
(PHP 3, PHP 4 )

explode -- Split a string by string
把字符串变成数组

[code]
// Example 1
$pizza = "piece1 piece2 piece3 piece4 piece5 piece6";
$pieces = explode(" ", $pizza);
echo $pieces[0]; // piece1
echo $pieces[1]; // piece2

// Example 2
$data = "foo:*:1023:1000::/home/foo:/bin/sh";
list($user, $pass, $uid, $gid, $gecos, $home, $shell) = explode(":", $data);
echo $user; // foo
echo $pass; // *

?>
[/code]