我的问题听起来有些困惑。但实际上，这是一个非常简单的过程。让我为您清除情况。我有一个标题$test_result_data如下的数组：
Array
(
[0] => Array
(
[test_pack_id] => 8ed32f6479a0169db3531d3366996d35
[test_pack_name] => CPT Free Samples
[test_pack_desc] => This package contains a free sample test of 30 minutes containing 30 questions from - Fundamentals of accounting, Mercantile Law, General Economics and Quantitative Aptitude. This is perfect to discover the beauty of online exam preparation.
[test_pack_type_id] => 7
[test_pack_image] =>
[test_pack_validity_year] => 0
[test_pack_validity_month] => 0
[test_pack_validity_days] => 3
[test_pack_plan] => free
[test_pack_price] => 0.00
[test_pack_no_tests] => 0
[test_pack_publish] => yes
[test_pack_code] =>
[test_pack_sold] => 22
[test_pack_created_staff_id] => ff8d4a5ea6bf11dce105aa2fa7b959b8
[test_pack_updated_staff_id] => ff8d4a5ea6bf11dce105aa2fa7b959b8
[test_pack_created_date] => 1337014879
[test_pack_updated_date] => 1376886700
[test_pack_purchase_date] => 1364454118
[test_details] => Array
(
[0] => Array
(
[test_id] => 159
[test_name] => CPT Sample Test
[test_max_score] => 120.000
[test_no_questions] => 30
[test_attempt] => 15
[test_not_attempt] => 7
[avg_test_user_time_used] => 00:04:39 Hr
[top_score] => 46.00
[avg_score] => 3
[lower_score] => 0.00
)
)
)
[1] => Array
(
[test_pack_id] => 84880f321fc957f9b28b702d5a43f57b
[test_pack_name] => CPT General Economics
[test_pack_desc] => This Package contains <b>16 chapterwise testlets</b> of 15 minutes each, <b>8 chapterwise tests </b>of 1 hour each and <b>3 full syllabus tests</b> of 1 hour covering syllabus of CPT General Economics.<br>
<b>Total Tests in this Package : 27</b>
[test_pack_type_id] => 7
[test_pack_image] =>
[test_pack_validity_year] => 0
[test_pack_validity_month] => 6
[test_pack_validity_days] => 0
[test_pack_plan] => paid
[test_pack_price] => 359.00
[test_pack_no_tests] => 0
[test_pack_publish] => yes
[test_pack_code] =>
[test_pack_sold] => 0
[test_pack_created_staff_id] => ff8d4a5ea6bf11dce105aa2fa7b959b8
[test_pack_updated_staff_id] => ff8d4a5ea6bf11dce105aa2fa7b959b8
[test_pack_created_date] => 1338298119
[test_pack_updated_date] => 1343564534
[test_pack_purchase_date] => 0
[test_details] => Array
(
[0] => Array
(
[test_id] => 580
[test_name] => CPT Testlet : Demand & Supply 1
[test_max_score] => 40.000
[test_no_questions] => 10
[test_attempt] => 0
[test_not_attempt] => 0
[top_score] =>
[avg_score] => 0
[lower_score] =>
)
[1] => Array
(
[test_id] => 581
[test_name] => CPT Test : Micro Economics
[test_max_score] => 50.000
[test_no_questions] => 50
[test_attempt] => 0
[test_not_attempt] => 0
[top_score] =>
[avg_score] => 0
[lower_score] =>
)
[2] => Array
(
[test_id] => 583
[test_name] => CPT Testlet : Micro Economics 1
[test_max_score] => 40.000
[test_no_questions] => 10
[test_attempt] => 0
[test_not_attempt] => 0
[top_score] =>
[avg_score] => 0
[lower_score] =>
)
[3] => Array
(
[test_id] => 582
[test_name] => CPT Testlet : Micro Economics 2
[test_max_score] => 40.000
[test_no_questions] => 10
[test_attempt] => 0
[test_not_attempt] => 0
[top_score] => 0.00
[avg_score] => 0
[lower_score] => 0.00
)
[4] => Array
(
[test_id] => 579
[test_name] => CPT Testlet : Demand & Supply 2
[test_max_score] => 40.000
[test_no_questions] => 10
[test_attempt] => 0
[test_not_attempt] => 0
[top_score] =>
[avg_score] => 0
[lower_score] =>
)
[5] => Array
(
[test_id] => 578
[test_name] => CPT Test : Demand & Supply
[test_max_score] => 50.000
[test_no_questions] => 50
[test_attempt] => 0
[test_not_attempt] => 0
[top_score] => 0.00
[avg_score] => 0
[lower_score] => 0.00
)
[6] => Array
(
[test_id] => 577
[test_name] => CPT Testlet : Production & Cost 1
[test_max_score] => 40.000
[test_no_questions] => 10
[test_attempt] => 0
[test_not_attempt] => 0
[top_score] =>
[avg_score] => 0
[lower_score] =>
)
[7] => Array
(
[test_id] => 576
[test_name] => CPT Testlet : Production & Cost 2
[test_max_score] => 40.000
[test_no_questions] => 10
[test_attempt] => 0
[test_not_attempt] => 0
[top_score] => 0.00
[avg_score] => 0
[lower_score] => 0.00
)
[8] => Array
(
[test_id] => 575
[test_name] => CPT Test : Production & Cost
[test_max_score] => 50.000
[test_no_questions] => 50
[test_attempt] => 0
[test_not_attempt] => 0
[top_score] => 0.00
[avg_score] => 0
[lower_score] => 0.00
)
[9] => Array
(
[test_id] => 574
[test_name] => CPT Testlet : Price Determination 1
[test_max_score] => 40.000
[test_no_questions] => 10
[test_attempt] => 0
[test_not_attempt] => 0
[top_score] => 0.00
[avg_score] => 0
[lower_score] => 0.00
)
[10] => Array
(
[test_id] => 573
[test_name] => CPT Testlet : Price Determination 2
[test_max_score] => 40.000
[test_no_questions] => 10
[test_attempt] => 0
[test_not_attempt] => 0
[top_score] =>
[avg_score] => 0
[lower_score] =>
)
[11] => Array
(
[test_id] => 572
[test_name] => CPT Test : Price Determination
[test_max_score] => 50.000
[test_no_questions] => 50
[test_attempt] => 0
[test_not_attempt] => 0
[top_score] =>
[avg_score] => 0
[lower_score] =>
)
[12] => Array
(
[test_id] => 571
[test_name] => CPT Testlet : Indian Economy - A Profile 1
[test_max_score] => 40.000
[test_no_questions] => 10
[test_attempt] => 0
[test_not_attempt] => 0
[top_score] =>
[avg_score] => 0
[lower_score] =>
)
[13] => Array
(
[test_id] => 570
[test_name] => CPT Testlet : Indian Economy - A Profile 2
[test_max_score] => 40.000
[test_no_questions] => 10
[test_attempt] => 0
[test_not_attempt] => 0
[top_score] =>
[avg_score] => 0
[lower_score] =>
)
[14] => Array
(
[test_id] => 569
[test_name] => CPT Test : Indian Economy - A Profile
[test_max_score] => 50.000
[test_no_questions] => 50
[test_attempt] => 0
[test_not_attempt] => 0
[top_score] =>
[avg_score] => 0
[lower_score] =>
)
[15] => Array
(
[test_id] => 568
[test_name] => CPT Testlet : Aspects of Indian Economy 1
[test_max_score] => 40.000
[test_no_questions] => 10
[test_attempt] => 0
[test_not_attempt] => 0
[top_score] => 0.00
[avg_score] => 0
[lower_score] => 0.00
)
[16] => Array
(
[test_id] => 567
[test_name] => CPT Testlet : Aspects of Indian Economy 2
[test_max_score] => 40.000
[test_no_questions] => 10
[test_attempt] => 0
[test_not_attempt] => 0
[top_score] =>
[avg_score] => 0
[lower_score] =>
)
[17] => Array
(
[test_id] => 566
[test_name] => CPT Test : Aspects of Indian Economy
[test_max_score] => 50.000
[test_no_questions] => 50
[test_attempt] => 0
[test_not_attempt] => 0
[top_score] => 0.00
[avg_score] => 0
[lower_score] => 0.00
)
[18] => Array
(
[test_id] => 565
[test_name] => CPT Testlet : Economic Reforms in India 1
[test_max_score] => 40.000
[test_no_questions] => 10
[test_attempt] => 0
[test_not_attempt] => 0
[top_score] => 0.00
[avg_score] => 0
[lower_score] => 0.00
)
[19] => Array
(
[test_id] => 564
[test_name] => CPT Testlet : Economic Reforms in India 2
[test_max_score] => 40.000
[test_no_questions] => 10
[test_attempt] => 0
[test_not_attempt] => 0
[top_score] =>
[avg_score] => 0
[lower_score] =>
)
[20] => Array
(
[test_id] => 563
[test_name] => CPT Test : Economic Reforms in India
[test_max_score] => 50.000
[test_no_questions] => 50
[test_attempt] => 0
[test_not_attempt] => 0
[top_score] =>
[avg_score] => 0
[lower_score] =>
)
[21] => Array
(
[test_id] => 562
[test_name] => CPT Testlet : Money & Banking 1
[test_max_score] => 40.000
[test_no_questions] => 10
[test_attempt] => 0
[test_not_attempt] => 0
[top_score] =>
[avg_score] => 0
[lower_score] =>
)
[22] => Array
(
[test_id] => 561
[test_name] => CPT Testlet : Money & Banking 2
[test_max_score] => 40.000
[test_no_questions] => 10
[test_attempt] => 0
[test_not_attempt] => 0
[top_score] =>
[avg_score] => 0
[lower_score] =>
)
[23] => Array
(
[test_id] => 560
[test_name] => CPT Test : Money & Banking
[test_max_score] => 50.000
[test_no_questions] => 50
[test_attempt] => 0
[test_not_attempt] => 0
[top_score] =>
[avg_score] => 0
[lower_score] =>
)
[24] => Array
(
[test_id] => 559
[test_name] => CPT Test : General Economics 1
[test_max_score] => 50.000
[test_no_questions] => 50
[test_attempt] => 0
[test_not_attempt] => 0
[top_score] =>
[avg_score] => 0
[lower_score] =>
)
[25] => Array
(
[test_id] => 558
[test_name] => CPT Test : General Economics 2
[test_max_score] => 50.000
[test_no_questions] => 50
[test_attempt] => 0
[test_not_attempt] => 0
[top_score] => 0.00
[avg_score] => 0
[lower_score] => 0.00
)
[26] => Array
(
[test_id] => 557
[test_name] => CPT Test : General Economics 3
[test_max_score] => 50.000
[test_no_questions] => 50
[test_attempt] => 0
[test_not_attempt] => 0
[top_score] =>
[avg_score] => 0
[lower_score] =>
)
)
)
)
现在您可以看到该数组内部有两个主要数组。这些数组中的每个数组都包含测试包数据。这个数组是动态创建的，因此我们不能说每次包含多少个项目。现在，我要一个$test_pack_id，我只想从上述数组中获取键[test_pack_id]的值与变量的值成正比的那些数组元素$test_pack_id。我想为这些匹配的测试包数据项创建一个全新的数组。谁能帮我获得这个阵列？
假设我有以下变量：
$test_pack_id = '84880f321fc957f9b28b702d5a43f57b';//This is my input
数组$test_result_data可以一次，多次或在其中不包含此ID。但是，如果找到匹配项，则应返回所有匹配的元素。在上述情况下，输出应如下所示：
Array
(
[0] => Array
(
[test_pack_id] => 84880f321fc957f9b28b702d5a43f57b
[test_pack_name] => CPT General Economics
[test_pack_desc] => This Package contains <b>16 chapterwise testlets</b> of 15 minutes each, <b>8 chapterwise tests </b>of 1 hour each and <b>3 full syllabus tests</b> of 1 hour covering syllabus of CPT General Economics.<br>
<b>Total Tests in this Package : 27</b>
[test_pack_type_id] => 7
[test_pack_image] =>
[test_pack_validity_year] => 0
[test_pack_validity_month] => 6
[test_pack_validity_days] => 0
[test_pack_plan] => paid
[test_pack_price] => 359.00
[test_pack_no_tests] => 0
[test_pack_publish] => yes
[test_pack_code] =>
[test_pack_sold] => 0
[test_pack_created_staff_id] => ff8d4a5ea6bf11dce105aa2fa7b959b8
[test_pack_updated_staff_id] => ff8d4a5ea6bf11dce105aa2fa7b959b8
[test_pack_created_date] => 1338298119
[test_pack_updated_date] => 1343564534
[test_pack_purchase_date] => 0
[test_details] => Array
(
[0] => Array
(
[test_id] => 580
[test_name] => CPT Testlet : Demand & Supply 1
[test_max_score] => 40.000
[test_no_questions] => 10
[test_attempt] => 0
[test_not_attempt] => 0
[top_score] =>
[avg_score] => 0
[lower_score] =>
)
[1] => Array
(
[test_id] => 581
[test_name] => CPT Test : Micro Economics
[test_max_score] => 50.000
[test_no_questions] => 50
[test_attempt] => 0
[test_not_attempt] => 0
[top_score] =>
[avg_score] => 0
[lower_score] =>
)
[2] => Array
(
[test_id] => 583
[test_name] => CPT Testlet : Micro Economics 1
[test_max_score] => 40.000
[test_no_questions] => 10
[test_attempt] => 0
[test_not_attempt] => 0
[top_score] =>
[avg_score] => 0
[lower_score] =>
)
[3] => Array
(
[test_id] => 582
[test_name] => CPT Testlet : Micro Economics 2
[test_max_score] => 40.000
[test_no_questions] => 10
[test_attempt] => 0
[test_not_attempt] => 0
[top_score] => 0.00
[avg_score] => 0
[lower_score] => 0.00
)
[4] => Array
(
[test_id] => 579
[test_name] => CPT Testlet : Demand & Supply 2
[test_max_score] => 40.000
[test_no_questions] => 10
[test_attempt] => 0
[test_not_attempt] => 0
[top_score] =>
[avg_score] => 0
[lower_score] =>
)
[5] => Array
(
[test_id] => 578
[test_name] => CPT Test : Demand & Supply
[test_max_score] => 50.000
[test_no_questions] => 50
[test_attempt] => 0
[test_not_attempt] => 0
[top_score] => 0.00
[avg_score] => 0
[lower_score] => 0.00
)
)
)
)
使用array_filter：
$filtered = array_filter($yourArray, function($element) use($test_pack_id) {
return $element['test_pack_id'] == $test_pack_id;
});
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