通过PHP查找和替换JSON中的数据

<?php
// JSON字符串
$jsonString = '{"name": "John", "age": 30, "city": "New York"}';

// 将JSON字符串转换为PHP数组
$data = json_decode($jsonString, true);

// 递归函数查找并替换数据
function findAndReplace(&$data, $targetKey, $replacement) {
    foreach ($data as $key => &$value) {
        if ($key === $targetKey) {
            $value = $replacement;
        } elseif (is_array($value) || is_object($value)) {
            findAndReplace($value, $targetKey, $replacement);
        }
    }
}

// 查找并替换数据
findAndReplace($data, 'name', 'Tom');

// 将PHP数组转换为JSON字符串
$jsonString = json_encode($data);

echo $jsonString;
?>

{"name":"Tom","age":30,"city":"New York"}