如何使用逗号分隔的ID修复多个下拉列表？

Question

我有两个下拉列表，一个是用户列表，另一个是选择userlist.i想要列出非选定用​​户列出我的阵列

$this->getusers=
 [1] => Array
        (
            [adminID] => 28
            [UserName] => a
            [Password] => 345bcc5369bb7408dcfce4a1a97a936cc961499ec696c5161d3d3ffb99e2f179
            [salt] => a147b357bd7f351644e784506d87f110
            [email] => [email protected]
            [profile_id] => 2
            [E_id] => 11
            [R_head] => 27
        )

    [2] => Array
        (
            [adminID] => 27
            [UserName] => d
            [Password] => d2111a96534b5ac543234ebcd759a2691535ecc43be575aadff463cc4dfbc0cd
            [salt] => e9eef7d916e6c9ad5ea64790b8f93a35
            [email] => [email protected]
            [profile_id] => 1
            [E_id] => 13
            [R_head] => 26
        )

    [3] => Array
        (
            [adminID] => 34
            [UserName] => f
            [Password] => 955cd016646459cb38bd5ba3454724d529a568f2ce0090a3afbc9d50369ddb65
            [salt] => 0a6989ec15b6454a24722e8832cd0cd9
            [email] => [email protected]
            [profile_id] => 2
            [E_id] => 123
            [R_head] => 27
        )

[4] => Array
    (
        [adminID] => 33
        [UserName] => j
        [Password] => f2852fb272e1ff58c0562096e94d3d1d9b72c6ed7c0c90e67787179918e58153
        [salt] => 9a547a397db3f342519c21fb934aeb87
        [email] => [email protected]
        [profile_id] => 3
        [E_id] => 12
        [R_head] => 29
    )

我尝试使用in_array函数进行多选

$this->editproject=
Array
(
    [0] => Array
        (
            [Project_name] => test
            [p_id] => 1
            [gid] => 28,33
        )

这里gid是逗号分隔，这里28,33是选定的用户所以我不想在用户列表中列出28和33

<?php foreach ($this->getusers as $users): ?>
    <select name="" id="lstview" class="form-control" size="8" multiple="multiple">
    <option value="<?php echo $users['adminID'] ?>"<?php if(!in_array(  $this->editproject[0]['gid'],$users['adminID'])){ ?>selected="selected"<?php } ?>><?php echo $users['UserName'] ?></option>
    </select>
<?php endforeach ?>

运气不好我没有得到任何输出。任何帮助将非常感激

Answer 1

我认为问题是你在foreach中使用了完整的select元素，你应该在foreach之外选择select标签

<select name="" id="lstview" class="form-control" size="8" multiple="multiple">
<?php
foreach ($this->getusers as $users) {
    $selected = array_column($this->editproject, 'gid');
    if (!in_array($users['adminID'], $selected)) {
        echo "<option value='" . $users['adminID'] . "' selected>" . $users['UserName'] . "</option>";
    }
}
?>
</select>

你有错误的in_array语法。 我想你可能需要array_column来获取所有gids并检查in_aray

in_array - 检查数组中是否存在值

句法：

in_array ( mixed $needle , array $haystack [, bool $strict = FALSE ] ) : bool

Answer 2

如果你想跳过所选的id不会出现在下拉列表中，你可以设置一个条件来继续循环并获取下一个值。

$selected = $this->editproject[0]['gid'];
foreach ($this->getusers as $users):
if(in_array($users['adminID'], $selected){ continue; }
/** rest of the logic **/
endforeach;