在php中提交html表单时，如何向数组php文件添加值？

我有一个html表单index.php和另一个mydata.php文件。我想将数据放入mydata.php文件中，但存在一些问题

index.php

<form action="" method="POST">
    <input name="field1" type="text" />
    <input name="field2" type="text" />
    <input type="submit" name="submit" value="Save Data">
</form>

<?php
if (isset($_POST['field1']) && isset($_POST['field2'])) {
    if (!filesize('mydata.php')) {
        $data0 = '<?php $a = array(' . "\n";
        $ret = file_put_contents('mydata.php', $data0, FILE_APPEND | LOCK_EX);
    }

    $data = '"' . $_POST['field1'] . '"' . '=>' . '"' . $_POST['field2'] . '",' . "\n";
    $ret = file_put_contents('mydata.php', $data, FILE_APPEND | LOCK_EX);

    if ($ret === false) {
        die('There was an error writing this file');
    } else {
        echo "$ret bytes written to file";
    }
}
?>

当我添加提交新值时，我需要像我的post数据一样推送新数组

   Array
(
    [field1] => c
    [field2] => d
    [submit] => Save Data
)

$array = array("a"=>"b","c"=>"d");

---

我不确定您在问什么，因为问题不清楚，但如果我没有弄错，要在现有数组中添加新的键值对，您可以尝试

$field1 = $_POST['field1']; // $field1 = "c"
$field2 = $_POST['field2']; // $field2 = "d"

$array[$field1] = $field2;

---

您只需将数据添加到

$array

，生成PHP代码，然后将其保存到文件中

PHP文件示例：

<?php
// data for the form ($_POST), all data from the client (browser) MUST be validated and sanitized
$formData = [
    'field1' => 'c',
    'field2' => 'd'
];

// load mydata.php if it was not loaded before
require_once 'mydata.php';

// add new data or update existen
$array = array_merge($array, $formData);
$tab = '    ';

// generate the new content for the mydata.php file
$newContent = '<?php' . PHP_EOL . '$array = [' . PHP_EOL;
foreach ($array as $key => $value)
    $newContent .= $tab . "'$key' => '" . addslashes($value) . "'," . PHP_EOL;

$newContent .= '];' . PHP_EOL;

//save the new content into file
file_put_contents('mydata.php', $newContent);

---

您可以这样做：
$data[$\u POST['field1']]=$\u POST['field2']
为什么不使用DB（MySQL或SQLite）？如果您想将数据存储在文件中，那么我建议您使用JSON。@Saani OP想将数据添加（存储）到
mydata.php
文件中。这就是他准备和排列数据的方法，然后可以将其保存到文件或数据库中。他想要什么都行，谢谢你的回答neodan@DivyeshSigmate别忘了记下答案，否则这个问题在将来就没用了。我没有15个名声，所以我不能记下答案
<?php
// data for the form ($_POST), all data from the client (browser) MUST be validated and sanitized
$formData = [
    'field1' => 'c',
    'field2' => 'd'
];

// load mydata.php if it was not loaded before
require_once 'mydata.php';

// add new data or update existen
$array = array_merge($array, $formData);
$tab = '    ';

// generate the new content for the mydata.php file
$newContent = '<?php' . PHP_EOL . '$array = [' . PHP_EOL;
foreach ($array as $key => $value)
    $newContent .= $tab . "'$key' => '" . addslashes($value) . "'," . PHP_EOL;

$newContent .= '];' . PHP_EOL;

//save the new content into file
file_put_contents('mydata.php', $newContent);

<?php
// data for the form ($_POST), all data from the client (browser) MUST be validated and sanitized
$formData = [
    'field2' => 'c',
    'field3' => 'd'
];

$array = [];

// load data
if (file_exists('mydata.json'))
    $array = json_decode(file_get_contents('mydata.json'), true);

// add new data or update the existen
$array = array_merge($array, $formData);

// save the new data into file
file_put_contents('mydata.json', json_encode($array), LOCK_EX);