将变量从javascript传递到php文件

var variable = "Hello";
fetch('example.php', {
  method: 'POST',
  body: JSON.stringify({ variable: variable })
})
.then(response => response.text())
.then(data => {
  console.log(data); // 处理PHP文件返回的数据
})
.catch(error => {
  console.error('Error:', error);
});

<?php
$variable = $_POST['variable'];
echo "Received variable: " . $variable;
?>

<form id="myForm" action="example.php" method="post">
  <input type="hidden" name="variable" id="variableInput">
</form>

var variable = "Hello";
document.getElementById("variableInput").value = variable;
document.getElementById("myForm").submit();

<?php
$variable = $_POST['variable'];
echo "Received variable: " . $variable;
?>

var variable = "Hello";
window.location.href = 'example.php?variable=' + encodeURIComponent(variable);

<?php
$variable = $_GET['variable'];
echo "Received variable: " . $variable;
?>