I have this object in php:

$object = 
[
    [
        {"catalogo": "C400047", "rfc_inf_aval": "CIS981002NK4", },
        {"catalogo": "C140064","rfc_inf_aval": "MZT8501014S6",},
        {"catalogo": "C400047","rfc_inf_aval": "MZT8501014S6",},
        {"catalogo": "C400047","rfc_inf_aval": "CIS981002NK4",},
        {"catalogo": "C140064","rfc_inf_aval": "MZT8501014S6",},
        {"catalogo": "C140064","rfc_inf_aval": "MZT8501014S6",},
        {"catalogo": "C140064","rfc_inf_aval": "MZT8501014S6",},
        {"catalogo": "C140064","rfc_inf_aval": "CIS981002NK4",},   
    ],
]

and it should stay like this, that I eliminate all the repeated rfc of each catalog, the repeated catalogs should not be eliminated

[
    [
        {"catalogo": "C400047","rfc_inf_aval": "CIS981002NK4",},
        {"catalogo": "C140064","rfc_inf_aval": "MZT8501014S6",},
        {"catalogo": "C400047","rfc_inf_aval": "MZT8501014S6",},
        {"catalogo": "C140064","rfc_inf_aval": "CIS981002NK4",},
    ],
]

I have tried to do this but it removes all the rfcs and I need it to remove only the repeated rfcs but by catalog

  for ($i=0; $i < count($object); $i  ) { 
                 if(!in_array($object[$i]->rfc_inf_aval, $array1)){
                     array_push($array1,  $object[$i]->rfc_inf_aval);
                      array_push($array2,  $object[$i]);
                 }
             }   

CodePudding user response：

Try this:

 for ($i=0; $i < count($object); $i  ) { 
     $k = $object[$i]->catalogo.'|'.$object[$i]->rfc_inf_aval;
     $reduced[$k] = $object[$i];
 }
 $object = array_values($reduced);

• I generate a key from catalogo and rfc_inf_aval. That eliminates the duplication in the new array.
• array_values just sets normal numeric indexes in the result array.

CodePudding user response：

First, your object is invalid, since is a JSON string, so I use heredoc to define it.

Following this answer https://stackoverflow.com/a/25020035/1757214 I get the following code:

<?php 

$js = <<<JSON
[[
        {"catalogo": "C400047","rfc_inf_aval": "CIS981002NK4"},
        {"catalogo": "C140064","rfc_inf_aval": "MZT8501014S6"},
        {"catalogo": "C400047","rfc_inf_aval": "MZT8501014S6"},
        {"catalogo": "C400047","rfc_inf_aval": "CIS981002NK4"},
        {"catalogo": "C140064","rfc_inf_aval": "MZT8501014S6"},
        {"catalogo": "C140064","rfc_inf_aval": "MZT8501014S6"},
        {"catalogo": "C140064","rfc_inf_aval": "MZT8501014S6"},
        {"catalogo": "C140064","rfc_inf_aval": "CIS981002NK4"} 
]]
JSON;
// Get the real object as an associative array
$data = json_decode($js, true);
// Use the first element, since is a nested array
$object = $data[0];

function my_array_unique($array, $keep_key_assoc = false){
    $duplicate_keys = array();
    $tmp = array();       

    foreach ($array as $key => $val){
        // convert objects to arrays, in_array() does not support objects
        if (is_object($val))
            $val = (array)$val;

        if (!in_array($val, $tmp))
            $tmp[] = $val;
        else
            $duplicate_keys[] = $key;
    }

    foreach ($duplicate_keys as $key)
        unset($array[$key]);

    return $keep_key_assoc ? $array : array_values($array);
}

var_dump(my_array_unique($object));

You will get:

array(4) {
  [0]=>
  array(2) {
    ["catalogo"]=>
    string(7) "C400047"
    ["rfc_inf_aval"]=>
    string(12) "CIS981002NK4"
  }
  [1]=>
  array(2) {
    ["catalogo"]=>
    string(7) "C140064"
    ["rfc_inf_aval"]=>
    string(12) "MZT8501014S6"
  }
  [2]=>
  array(2) {
    ["catalogo"]=>
    string(7) "C400047"
    ["rfc_inf_aval"]=>
    string(12) "MZT8501014S6"
  }
  [3]=>
  array(2) {
    ["catalogo"]=>
    string(7) "C140064"
    ["rfc_inf_aval"]=>
    string(12) "CIS981002NK4"
  }
}