我有一个多维数组。现在我想在这个数组中插入一个新的键值组合。但我做不到。你能帮我实现这一点吗？为了供您参考，我在下面给出了我的代码以及现有的多维阵列：
代码：$practice_sheet_set_data/现有多维数组//获取要插入上述数组的值的代码/
$sql = " SELECT st.staff_full_name FROM ".TBL_STAFF." AS st JOIN ".TBL_PRACTICE_SHEET." AS ps ";
$sql .= " ON st.staff_id=ps.practice_sheet_created_staff_id WHERE ps.practice_sheet_id= ".$practice_sheet_id;
$this->mDb->Query( $sql);
$practice_sheet_created_staff_data = $this->mDb->FetchArray(MYSQL_FETCH_SINGLE);
从上面的代码中，我得到了一个变量$practice_sheet_created_staff_data中的一维数组，但无法将其值插入到上面的数组中。我也试过array_push和array_merge。下面给出了两个阵列：
$practice_sheet_data
Array
(
[0] => Array
(
[topic_no_questions] => 5
[subject_id] => 21
[subject_name] => CPT Quantitative Aptitude
[topic_id] => 505
[topic_name] => Ratio and Proportion
)
[1] => Array
(
[topic_no_questions] => 5
[subject_id] => 21
[subject_name] => CPT Quantitative Aptitude
[topic_id] => 508
[topic_name] => Inequalities
)
[2] => Array
(
[topic_no_questions] => 5
[subject_id] => 21
[subject_name] => CPT Quantitative Aptitude
[topic_id] => 509
[topic_name] => Simple and Compound Interest including Annuity - Applications
)
[3] => Array
(
[topic_no_questions] => 5
[subject_id] => 21
[subject_name] => CPT Quantitative Aptitude
[topic_id] => 511
[topic_name] => Sequence and Series - Arithmatic and Geomatric Progression
)
[4] => Array
(
[topic_no_questions] => 5
[subject_id] => 21
[subject_name] => CPT Quantitative Aptitude
[topic_id] => 517
[topic_name] => Statistical Description of Data
)
[5] => Array
(
[topic_no_questions] => 5
[subject_id] => 21
[subject_name] => CPT Quantitative Aptitude
[topic_id] => 519
[topic_name] => Correlation and Regression
)
[6] => Array
(
[topic_no_questions] => 5
[subject_id] => 21
[subject_name] => CPT Quantitative Aptitude
[topic_id] => 520
[topic_name] => Probability & Mathematical Expectation
)
[7] => Array
(
[topic_no_questions] => 5
[subject_id] => 21
[subject_name] => CPT Quantitative Aptitude
[topic_id] => 521
[topic_name] => Theoritical Distributions
)
)
$practice_sheet_created_staff_data
Array
(
[staff_full_name] => Amol Patil
)
我想在上一个数组中创建一个新的键值对，作为[staff_full_name] => Amol Patil
如果您推送名称，您可能会在foreach上遇到问题。试试这个：
$new_array = array($practice_sheet_created_staff_data['staff_full_name'] => $practice_sheet_data);
你可以用var_dump($new_array[0]);或var_dump($new_array['name']); 获得
新输出类似这样的内容
Array (
[Amol Patil] => Array
[0] => Array
(
[topic_no_questions] => 5
[subject_id] => 21
[subject_name] => CPT Quantitative Aptitude
[topic_id] => 505
[topic_name] => Ratio and Proportion
)
[1] => Array
(
[topic_no_questions] => 5
[subject_id] => 21
[subject_name] => CPT Quantitative Aptitude
[topic_id] => 508
[topic_name] => Inequalities
)
[2] => Array
(
[topic_no_questions] => 5
[subject_id] => 21
[subject_name] => CPT Quantitative Aptitude
[topic_id] => 509
[topic_name] => Simple and Compound Interest including Annuity - Applications
)
[3] => Array
(
[topic_no_questions] => 5
[subject_id] => 21
[subject_name] => CPT Quantitative Aptitude
[topic_id] => 511
[topic_name] => Sequence and Series - Arithmatic and Geomatric Progression
)
[4] => Array
(
[topic_no_questions] => 5
[subject_id] => 21
[subject_name] => CPT Quantitative Aptitude
[topic_id] => 517
[topic_name] => Statistical Description of Data
)
[5] => Array
(
[topic_no_questions] => 5
[subject_id] => 21
[subject_name] => CPT Quantitative Aptitude
[topic_id] => 519
[topic_name] => Correlation and Regression
)
[6] => Array
(
[topic_no_questions] => 5
[subject_id] => 21
[subject_name] => CPT Quantitative Aptitude
[topic_id] => 520
[topic_name] => Probability & Mathematical Expectation
)
[7] => Array
(
[topic_no_questions] => 5
[subject_id] => 21
[subject_name] => CPT Quantitative Aptitude
[topic_id] => 521
[topic_name] => Theoritical Distributions
)
)
如果你想插入一个新的密钥对值，你尝试过吗
foreach($practice_sheet_created_staff_data as $key => $value)
{
$practice_sheet_created_staff_data[$key][staff_full_name] = 'Amol Patil'
}
如果要将$practice_sheet_created_staff_data插入数组，则：
$practice_sheet_data[] = $practice_sheet_created_staff_data;
// will give you
// $practice_sheet_data[8] = array('staff_full_name' => 'Amol Patil');
在每个子数组中插入，然后：
foreach ($practice_sheet_data as $key => $array) {
$practice_sheet_data[$key]['staff_full_name'] = $practice_sheet_created_staff_data['staff_full_name'];
}
// will give you
// $practice_sheet_data[0] = array(... your other elements..., 'staff_full_name' => 'Amol Patil');
如果您想更改结果数组，请尝试此操作。
foreach($practice_sheet_created_staff_data as &$p) {
$p['staff_full_name'] = 'Amol Patil';
// $p['topic_id'] = 0; // if you wanna the other value.
}
您必须键入&它可以更改数组内的值。