葛亭PHP错误array_merge和array_unique

Question

下面是阵列和我想唯一的代码/合并

$data['default_new'] = array_unique(array_merge($data['default'], $data['related'])) 



Array 
(
    [0] => Array 
     (
      [keywords_id] => 8 
      [keyword] => Curling 
      [parent_id] => 5 
      [count] => 0 
     ) 

) 
Array 
(
    [0] => Array 
     (
      [keywords_id] => 8 
      [keyword] => Curling 
      [parent_id] => 5 
      [count] => 0 
     ) 

    [1] => Array 
     (
      [keywords_id] => 10 
      [keyword] => Catchers 
      [parent_id] => 6 
      [count] => 0 
     ) 

    [2] => Array 
     (
      [keywords_id] => 16 
      [keyword] => CES 2013 
      [parent_id] => 3 
      [count] => 0 
     ) 

) 

它给了我一个数组的字符串错误：

A PHP Error was encountered 

Severity: Notice 

Message: Array to string conversion 

Filename: models/content_model.php 

Line Number: 29 

我有这个独特和合并之前的问题，永远不会修复它！

我使用笨

这里是关于我使用array_unique功能的详细信息/合并：

public function results($data, $searched) 
    { 
     $page['searched'] = $searched; 
     $page['is_active'] = $this->logic_model->is_active(); 
     $data2 = array(); 
     $data2['default_new'] = array_unique(array_merge($data['default'], 
$data['related'])); 
} 

线29是$data2['default_new'] = array_u

的$data参数包含，default和regular其上面可以看出。

vardump数据：

array(3) { 
    ["active"]=> 
    array(2) { 
    ["id"]=> 
    string(1) "5" 
    ["keyword"]=> 
    string(6) "Sports" 
    } 
    ["related"]=> 
    array(1) { 
    [0]=> 
    array(4) { 
     ["keywords_id"]=> 
     string(1) "8" 
     ["keyword"]=> 
     string(7) "Curling" 
     ["parent_id"]=> 
     string(1) "5" 
     ["count"]=> 
     string(1) "0" 
    } 
    } 
    ["default"]=> 
    array(3) { 
    [0]=> 
    array(4) { 
     ["keywords_id"]=> 
     string(1) "8" 
     ["keyword"]=> 
     string(7) "Curling" 
     ["parent_id"]=> 
     string(1) "5" 
     ["count"]=> 
     string(1) "0" 
    } 
    [1]=> 
    array(4) { 
     ["keywords_id"]=> 
     string(2) "10" 
     ["keyword"]=> 
     string(8) "Catchers" 
     ["parent_id"]=> 
     string(1) "6" 
     ["count"]=> 
     string(1) "0" 
    } 
    [2]=> 
    array(4) { 
     ["keywords_id"]=> 
     string(2) "16" 
     ["keyword"]=> 
     string(8) "CES 2013" 
     ["parent_id"]=> 
     string(1) "3" 
     ["count"]=> 
     string(1) "0" 
    } 
    } 
} 

Answer 1

看看笔记部分在这里：http://us.php.net/array_unique#refsect1-function.array-unique-notes

你将需要拿出自己的算法用于创建一个独特的多维数组。在SO

<?php 
$values = array(); 

foreach($data as $d) { 
    $values[md5(serialize($d))] = $d; 
} 

sort($values); 
?> 

相关的问题：一些在我的链接的评论上述建议为实现这一点的各种方法，例如，this onestrange behavior of php array_unique和How do I use array_unique on an array of arrays?

Answer 2

该错误不从array_unique或array_merge函数调用来。

的问题是，你定义$data为string之前。

这应该修复它：

$data = array(); 
$data['default_new'] = array_unique(array_merge($data['default'], $data['related']))