分组项目时出现问题 - Issue with grouping items

我对列表有问题，我想显示组和子组(sgroups(，如下所示：

GROUP1
sgroup1-a
sgroup1-b
sgroup1-c
sgroup1-d
GROUP2
sgroup2-a
sgroup2-b

但是我的代码返回：

GROUP1
sgroup1-a
GROUP1
sgroup1-b
GROUP1
sgroup1-c
GROUP2
sgroup2-a
GROUP2
sgroup2-b
sgroup1-d

所以我显示了组的名称。

表结构：

CREATE TABLE IF NOT EXISTS `groupe` (
`id_hm` int(2) NOT NULL AUTO_INCREMENT,
`groupe_tran` varchar(30) COLLATE utf8_unicode_ci NOT NULL,
`onoff` enum('0','1') COLLATE utf8_unicode_ci NOT NULL DEFAULT '1' COMMENT '0:no, 1:active',
`search` enum('0','1') COLLATE utf8_unicode_ci NOT NULL DEFAULT '0' COMMENT 'include in search menu, 0: 0ff, 1: on',
PRIMARY KEY (`id_hm`)
) ENGINE=MyISAM  DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci AUTO_INCREMENT=11 ;

CREATE TABLE IF NOT EXISTS `sgroupe` (
`id_bm` int(2) NOT NULL AUTO_INCREMENT,
`id_hm1` tinyint(2) NOT NULL COMMENT 'head menu id',
`sgroupe_tran` varchar(30) COLLATE utf8_unicode_ci NOT NULL,
`sgroupe_en` varchar(30) COLLATE utf8_unicode_ci NOT NULL,
`onoff` enum('0','1') COLLATE utf8_unicode_ci NOT NULL DEFAULT '1' COMMENT '0:no, 1:active',
`search` enum('0','1') COLLATE utf8_unicode_ci NOT NULL DEFAULT '0' COMMENT 'include in search menu, 0: 0ff, 1: on',
PRIMARY KEY (`id_bm`)
) ENGINE=MyISAM  DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci AUTO_INCREMENT=49 ;

查询和 PHP 代码：

$sSel = 'SELECT DISTINCT(groupe_tran), sgroupe_tran FROM groupe JOIN sgroupe ON groupe.id_hm = sgroupe.id_hm1 WHERE groupe.search = "1" AND sgroupe.search = "1" AND groupe.onoff = "1" AND sgroupe.onoff = "1"';
$sReq = $connexion->query($sSel);
$sRes = $sReq->fetchAll();
echo '<select name="groupe">';
foreach ($sRes as $sV) {
    $groupe_tran = $sV['groupe_tran'];
    $sgroupe_tran = $sV['sgroupe_tran'];
    echo '<option value="' . $groupe_tran . '">' . $groupe_tran . '</option>';
    echo '<option value="' . $sgroupe_tran . '">' . $sgroupe_tran . '</option>';
}
echo '</select>';

假设$groupe_tran是你的GROUP1/GROUP2值，你可以保存上一个$groupe_tran，检查当前值是否不一样——

$sSel = 'SELECT DISTINCT(groupe_tran), sgroupe_tran FROM groupe JOIN sgroupe ON groupe.id_hm = sgroupe.id_hm1 WHERE groupe.search = "1" AND sgroupe.search = "1" AND groupe.onoff = "1" AND sgroupe.onoff = "1"';
$sReq = $connexion->query($sSel);
$sRes = $sReq->fetchAll();
// create a previous value
$previous_groupe_tran = '';
echo '<select name="groupe">';
foreach ($sRes as $sV) {
    $groupe_tran = $sV['groupe_tran'];
    $sgroupe_tran = $sV['sgroupe_tran'];
    // check if current matches previous, and only print if no match    
    if($groupe_tran != $previous_groupe_tran){
        echo '<option value="' . $groupe_tran . '">' . $groupe_tran . '</option>';
        // set previous to current
        $previous_groupe_tran = $groupe_tran;
    }
    echo '<option value="' . $sgroupe_tran . '">' . $sgroupe_tran . '</option>';
}
echo '</select>';

我以你为例并添加了array_push：

    $previous_groupe_tran = array();
echo '<select name="hmenu">';
foreach ($sRes as $sV) {
$groupe_tran = $sV['groupe_tran'];
$sgroupe_tran = $sV['sgroupe_tran'];
if(!in_array($groupe_tran, $previous_groupe_tran)){
array_push($previous_groupe_tran, $groupe_tran);
print_r($previous_groupe_tran);
echo '<option value="' . $groupe_tran . '">'.$id_hm.' - ' . $groupe_tran . '</option>';
    }
    echo '<option value="' . $sgroupe_tran . '">'.$id_hm1.' - ' . $sgroupe_tran . '</option>';
}