codeigniter - Geting php error for array_merge and array_unique -

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below arrays , code trying unique/merge

$data['default_new'] = array_unique(array_merge($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         )  )

it gives me array string error:

a php error encountered  severity: notice  message: array string conversion  filename: models/content_model.php  line number: 29

i had problem unique , merge before , never fixed it!

i using codeigniter

here more info regarding function using array_unique/merge in:

    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'])); }

line 29 $data2['default_new'] = array_u

the $data parameter contains, default , regular can seen above.

vardump of data:

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"     }   } }

take @ notes section here: http://us.php.net/array_unique#refsect1-function.array-unique-notes

you're going need come own algorithm creating unique multidimensional array. of comments @ link above suggest various methods accomplishing this, e.g., this one:

<?php $values = array();  foreach($data $d) {     $values[md5(serialize($d))] = $d; }  sort($values); ?>

related questions on so: strange behavior of php array_unique , how use array_unique on array of arrays?


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