implode 使用一個字符串將數組變成字符串 ``` <?php $array=?array('lastname',?'email',?'phone'); $comma_separated= implode(",",?$array); echo $comma_separated;?// lastname,email,phone // Empty string when using an empty array: var_dump(implode('hello',?array()));?// string(0) ?> ``` explode —?使用一個字符串分割另一個字符串，返回一個數組 ``` <?php // 示例 1 $pizza = "piece1 piece2 piece3 piece4 piece5 piece6"; $pieces = explode(" ", $pizza); echo $pieces[0]; // piece1 echo $pieces[1]; // piece2 // 示例 2 $data = "foo:*:1023:1000::/home/foo:/bin/sh"; list($user, $pass, $uid, $gid, $gecos, $home, $shell) = explode(":", $data); echo $user; // foo echo $pass; // * ?> ```