Thư viện đề thi IELTS
Array ( [0] => Array ( [id] => 5 [name] => CAM 19 [children] => Array ( [0] => Array ( [id] => 1 [name] => CAM 19 - TEST 01 [tests] => Array ( [0] => Array ( [id] => 1 [test_category_id] => 1 [title] => CAM 19 - LISTENING TEST 1 [slug] => cam-19---listening-test-1 [description] => [thumbnail] => [duration] => 60 [test_type] => listening [status] => publish [created_at] => 2025-03-19T09:54:55.000000Z [updated_at] => 2025-04-04T09:05:20.000000Z ) [1] => Array ( [id] => 2 [test_category_id] => 1 [title] => CAM 19 - READING TEST 1 [slug] => cam-19---reading-test-1 [description] => [thumbnail] => [duration] => 60 [test_type] => reading [status] => publish [created_at] => 2025-03-25T04:32:56.000000Z [updated_at] => 2025-04-10T01:18:31.000000Z ) [2] => Array ( [id] => 4 [test_category_id] => 1 [title] => CAM 19 - WRITING TEST 1 [slug] => cam-19---writing-test-1 [description] => [thumbnail] => [duration] => 60 [test_type] => writing [status] => publish [created_at] => 2025-03-28T04:38:23.000000Z [updated_at] => 2025-04-10T01:18:44.000000Z ) [3] => Array ( [id] => 42 [test_category_id] => 1 [title] => CAM 19 - 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