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php三维数组去重(示例代码)_php实例

WBOY
WBOYOriginal
2016-06-07 17:22:54769browse

假设叫数组 $my_array;

复制代码 代码如下:

// 新建一个空的数组.
$tmp_array = array();

$new_array = array();

// 1. 循环出所有的行. ( $val 就是某个行)
foreach($my_array as $k => $val){

    $hash = md5(json_encode($val));
    if (in_array($hash, $tmp_array)) {
        echo('这个行已经有过了');
    }else{
        // 2. 在 foreach 循环的主体中, 把每行数组对象得hash 都赋值到那个临时数组中.
        $tmp_array[] = $hash;
        $new_array[] = $val;
    }
}

print_r($new_array);


$new_array 即为筛选后无重复数据的数组。
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