1、实现多维数组去除重复值的函数

function array_unique_new($arr) {
    $t = array_map('serialize', $arr);
    //利用serialize()方法将数组转换为以字符串形式的一维数组
    $t = array_unique($t);
    //去掉重复值
    $new_arr = array_map('unserialize', $t);
    //然后将刚组建的一维数组转回为php值
    return $new_arr;
}

2、需要去除重复值的数组

$arr = array( 
    array('sup_name' => '上海', 'cn_name' => 'EthylAcetate', 'en_name' => '乙酸乙酯1', 'pinyin' => 'yisuanyizhi', 'pro_info' => '耗材', ), 
    array('sup_name' => '上海2', 'cn_name' => 'EthylAcetate', 'en_name' => '乙酸乙酯2', 'pinyin' => 'yisuanyizhi', 'pro_info' => '耗材', ), 
    array('sup_name' => '上海4', 'cn_name' => 'EthylAcetate', 'en_name' => '乙酸乙酯1', 'pinyin' => 'yisuanyizhi', 'pro_info' => '耗材', ), 
    array('sup_name' => '上海', 'cn_name' => 'EthylAcetate', 'en_name' => '乙酸乙酯3', 'pinyin' => 'yisuanyizhi', 'pro_info' => '耗材', ), 
    array('sup_name' => '上海1', 'cn_name' => 'EthylAcetate', 'en_name' => '乙酸乙酯4', 'pinyin' => 'yisuanyizhi', 'pro_info' => '耗材', ), 
    array('sup_name' => '上海', 'cn_name' => 'EthylAcetate', 'en_name' => '乙酸乙酯3', 'pinyin' => 'yisuanyizhi', 'pro_info' => '耗材', ), 
    array('sup_name' => '上海1', 'cn_name' => 'EthylAcetate', 'en_name' => '乙酸乙酯4', 'pinyin' => 'yisuanyizhi', 'pro_info' => '耗材', ), 
);

3、执行测试

$new_arr = array_unique_new($arr);
 
echo '<pre/>';
print_r($new_arr);