js赋值给php

// 前端JavaScript代码
function sendDataToServer() {
    var data = { key: 'value' }; // 要发送的数据

    fetch('your-php-script.php', {
        method: 'POST',
        headers: {
            'Content-Type': 'application/json'
        },
        body: JSON.stringify(data)
    })
    .then(response => response.json())
    .then(data => {
        console.log('Success:', data);
    })
    .catch((error) => {
        console.error('Error:', error);
    });
}

// your-php-script.php
<?php
header('Content-Type: application/json');

// 获取POST数据
$inputJSON = file_get_contents('php://input');
$inputData = json_decode($inputJSON, true);

// 处理数据
$response = array("status" => "success", "data" => $inputData);

echo json_encode($response);
?>

<!-- 前端HTML代码 -->
<form action="your-php-script.php" method="POST">
    <input type="text" name="key" value="value">
    <input type="submit" value="Submit">
</form>

// your-php-script.php
<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $key = $_POST['key'];
    // 处理数据
    echo "Received value: " . $key;
}
?>

// 前端JavaScript代码
function sendDataViaURL() {
    var data = encodeURIComponent('value');
    window.location.href = 'your-php-script.php?key=' + data;
}

// your-php-script.php
<?php
if (isset($_GET['key'])) {
    $key = $_GET['key'];
    // 处理数据
    echo "Received value: " . $key;
}
?>