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@ 2019-05-28T23:38:08Z

<?php

$array = [
    [
        'website' => [
            'id' => 'one'
        ],
        'children' => [
            [
                'website' => [
                    'id' => 'one.one'
                ],
                'children' => [
                    [
                        'website' => [
                            'id' => 'one.one.one'
                        ],
                        'children' => [
                            [
                                'website' => [
                                    'id' => 'one.one.one.one'
                                ],
                                'children' => []
                            ],
                            [
                                'website' => [
                                    'id' => 'one.one.one.two'
                                ],
                                'children' => []
                            ]
                        ]
                    ],
                    [
                        'website' => [
                            'id' => 'one.one.two'
                        ],
                        'children' => [
                            [
                                'website' => [
                                    'id' => 'one.one.two.one'
                                ],
                                'children' => []
                            ],
                            [
                                'website' => [
                                    'id' => 'one.one.two.two'
                                ],
                                'children' => []
                            ]
                        ]
                    ]
                ]
            ],
            [
                'website' => [
                    'id' => 'one.two'
                ],
                'children' => [
                    [
                        'website' => [
                            'id' => 'one.two.one'
                        ],
                        'children' => [
                            [
                                'website' => [
                                    'id' => 'one.two.one.one'
                                ],
                                'children' => []
                            ],
                            [
                                'website' => [
                                    'id' => 'one.two.one.two'
                                ],
                                'children' => []
                            ]
                        ]
                    ],
                    [
                        'website' => [
                            'id' => 'one.two.two'
                        ],
                        'children' => [
                            [
                                'website' => [
                                    'id' => 'one.two.two.one'
                                ],
                                'children' => []
                            ],
                            [
                                'website' => [
                                    'id' => 'one.two.two.two'
                                ],
                                'children' => []
                            ]
                        ]
                    ]
                ]
            ]
        ]
    ]
];

function delete_entries(&$array, $ids_to_delete) {
    foreach ($array['children'] as $index => &$child) {
        if (in_array($child['website']['id'], $ids_to_delete)) {
            unset($array['children'][$index]);
        }
        delete_entries($child, $ids_to_delete);
    }
}

foreach ($array as &$arr) {
    delete_entries($arr, array('one.one.two', 'one.two.one'));
}

var_export($array);

var_export: documentation ( source)
in_array: documentation ( source)

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