PHP array_remove_keys remover elementos por llave: https://es.stackoverflow.com/q/101695/29967, Php

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<?php

/**
 * Removes the specified keys from the array.
 *
 * @param array $array
 * @param array $keys Keys to remove
 *
 * @return array
 *
 * @author Jack P.
 * @package Avalon
 * @subpackage Helpers
 */

$arrOriginal=
        array(
                array(
                        "CategoryId"=> 41,
                        "ParentCategoryId"=> 0,
                        "CategoryGroupId"=> 4,
                        "CategoryName"=> "Almacenamiento interno",
                        "SearchKeys"=> null,
                        "DisplayOrder"=> 1,
                        "IsRootCategory"=> false),

array(
                        "CategoryId"=> 42,
                        "ParentCategoryId"=> 0,
                        "CategoryGroupId"=> 4,
                        "CategoryName"=> "Almacenamiento interno2",
                        "SearchKeys"=> null,
                        "DisplayOrder"=> 1,
                        "IsRootCategory"=> false));

$arrRemover=array("ParentCategoryId","CategoryGroupId","SearchKeys", "DisplayOrder","IsRootCategory");

$arrNuevo = array_remove_keys($arrOriginal, $arrRemover);

var_dump($arrNuevo);

[ + ] Show input
Absolute running time: 0.11 sec, cpu time: 0.06 sec, memory peak: 8 Mb, absolute service time: 0,12 sec

PHP array_remove_keys remover elementos por llave: https://es.stackov...