PHP如何去掉多维数组的重复值

1.定义函数

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.定义数组

$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 = $this->array_unique_new($arr);

echo ‘<pre/>‘;

print_r($new_arr);

PHP如何去掉多维数组的重复值

原文：http://www.cnblogs.com/myphper/p/4113243.html