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<?php $array = [ (object) ['id'=> 1, 'value' => 0], (object) ['id'=> 2, 'value' => 10], (object) ['id'=> 3, 'value' => 14], (object) ['id'=> 4, 'value' => 0], (object) ['id'=> 5, 'value' => 21], (object) ['id'=> 6, 'value' => 44], ]; $result = []; foreach ($array as $obj) { if (!$obj->value) { unset($ref); $obj->values = []; $ref = &$obj->values; $result[] = $obj; continue; } $ref[] = $obj; } var_export($result);
Output for git.master, git.master_jit, rfc.property-hooks
array ( 0 => (object) array( 'id' => 1, 'value' => 0, 'values' => array ( 0 => (object) array( 'id' => 2, 'value' => 10, ), 1 => (object) array( 'id' => 3, 'value' => 14, ), ), ), 1 => (object) array( 'id' => 4, 'value' => 0, 'values' => array ( 0 => (object) array( 'id' => 5, 'value' => 21, ), 1 => (object) array( 'id' => 6, 'value' => 44, ), ), ), )

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