php - 将逗号分隔的字符串转换为列表

Question

我ali,aliiii,asd通过回显得到结果$row['GROUP_CONCAT(mem_name)'];。

我怎样才能像列表一样回显它们，以便我可以在点击功能上添加锚标记等。我有查询

$sql=mysql_query("
    SELECT cat_id, GROUP_CONCAT(mem_name)  
    FROM o_newcatmem GROUP BY cat_id
");

我希望结果 b 显示如下：

ali
aliiii
asd

Answer 1

你有一个$string这样的

$string = "ali,aliiii,asd";
echo "<pre>";

你有三个选择：

1. 您可以使用str_getcsv将 CSV 字符串转换为数组

   $list = str_getcsv($string);
   foreach ( $list as $var ) {
       echo $var, "\n";
   }
   

2. 使用它们将它们转换为数组explode

   $list = explode(",", $string);
   echo implode("\n", $list);
   

3. 使用只是使用str_replace

   $list = str_replace(",", "\n", $string);
   echo $list;
   

Answer 2

MySQL GROUP_CONCAT function has a SEPARATOR keywords.

• You can use GROUP_CONCAT(mem_name SEPARATOR ',') AS mems_name in your SQL statement.
• Use separator that does not exist in mem_name field.
• Use alias AS mems_name, so your PHP code looks simple, like $row['mems_name'].

In your PHP just explode data by your separator $list = explode('|', $row['mems_name']);.

Answer 3

<?php
// 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; // *

?>