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convertir una matriz unidimensional a multidimensional

Hola, tengo la siguiente lista de matrices. Necesito convertirla en algo como seguir, agruparla por compañía y mostrar categorías como segunda matriz.

 [0] => Array ( [company_id] => 1 [avatar] => '092EF7DB-B478-2EF5-1CC5-4A46D285B5F0.jpg' [comp_name] => Hotel 1 [categories] => Array ( [cat_+category_id] => Reception [cat_+category_id] => Accommodation ) [1] => Array ( [company_id] => 8 [avatar] => '' [comp_name] => Hotel 2 [categories] => Array ( [cat_+category_id] => Reception ) etc

matriz original a continuación

 0 => {#359 ▼ +"category_id": 10 +"company_id": 1 +"cat": "Reception" +"comp_name": "Hotel 1" +"avatar": "092EF7DB-B478-2EF5-1CC5-4A46D285B5F0.jpg" } 1 => {#354 ▼ +"category_id": 12 +"company_id": 1 +"cat": "Accomodation" +"comp_name": "Hotel 1" +"avatar": "092EF7DB-B478-2EF5-1CC5-4A46D285B5F0.jpg" } 2 => {#358 ▼ +"category_id": 10 +"company_id": 8 +"cat": "Reception" +"comp_name": "Hotel 2" +"avatar": null } 3 => {#361 ▼ +"category_id": 10 +"company_id": 23 +"cat": "Reception" +"comp_name": "Hotel 3" +"avatar": null } 4 => {#365 ▼ +"category_id": 12 +"company_id": 23 +"cat": "Accomodation" +"comp_name": "Hotel 3" +"avatar": null

¿Puedes aconsejarme cómo lograrlo en PHP? Gracias, Dany.

over 4 years ago · Santiago Trujillo
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Suponga que $originalArr es su matriz unidimensional original, la solución para convertir su matriz unidimensional en una matriz multidimensional sería así:

 $resultArr = array(); foreach($originalArr as $arr){ if(!isset($resultArr[$arr['company_id']])){ $resultArr[$arr['company_id']] = array('company_id' => $arr['company_id'], 'avatar' => $arr['avatar'], 'comp_name' => $arr['comp_name'], 'categories' => array('cat_' . $arr['category_id'] => $arr['cat']) ); }else{ $resultArr[$arr['company_id']]['categories']['cat_' . $arr['category_id']] = $arr['cat']; } } $resultArr = array_values($resultArr); // display $resultArr array var_dump($resultArr);
over 4 years ago · Santiago Trujillo Report
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