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<?php $relationships = ['contact', 'property', 'contact.type1', 'contact.type2', 'contact.type1.color1', 'contact.type1.color2']; $tree = []; foreach($relationships as $relation) { $parts = explode('.', $relation); $currentNode = &$tree; foreach($parts as $part) { if(empty($currentNode[$part])) { $currentNode[$part] = []; } $currentNode = &$currentNode[$part]; } unset($currentNode); } var_dump($tree);
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
array(2) { ["contact"]=> array(2) { ["type1"]=> array(2) { ["color1"]=> array(0) { } ["color2"]=> array(0) { } } ["type2"]=> array(0) { } } ["property"]=> array(0) { } }

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