Share the example code of using php three-dimensional array to remove duplicates

php three-dimensionalarrayremoval

This article introduces the method of deduplicating php three-dimensional array and shares a simple example.

If there is an array $my_array;

Example:

<?php// 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(&#39;这个行已经有过了&#39;);    }else{ // www.jbxue.com        
// 
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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