如何将 span id 值存储到 PHP 变量中

Question

我想知道如何将 span/div id 值存储到 PHP 变量中……在 id=event_id 中有像“234”这样的值……所以我想将该值存储到 php 变量中

  <?php
 //This Statement stores data in variable
 $test = '<span id ="event_id" ></span>'; 
 //this is for printing variable that contains data
 echo $test;
?>

<script>
 function setEventId(event_id){
  document.querySelector('#event_id')= event_id;
 }
 </script>

Answer 1

如果我正确理解了你的问题，你想做这样的事情：

<?php
 //This Statement stores data in variable 
 $test = '<span id ="event_id" ></span>';
 //this is for printing variable that contains data
 echo $test;
 $event_id = "<script>document.writeln(document.getElementById('event_id').innerHTML)</script>";
?>