通过PHP进行可手持json更新

我试图通过php调用更新json文件。 在我的控制台中，参数不是空的，但是当我检索json文件时，该值不在那里

保存功能如下所示：

Handsontable.Dom.addEvent(save, 'click', function() {
  var dataarray = JSON.stringify(hot.getData());
  ajax ('json/projectupdate.php', 'POST', {"infos:":dataarray}, function (res) {
    console.log (dataarray)
  });

[["test1","","gep2","",null,null,null,null,null],["","test1","","gep2",null,null,null,null,null],["dag","","test1","","gep2",null,null,null,null],["","dag","","test1",null,"gep2",null,null,null],["","","dag","","test1",null,"gep2",null,null],["","","","dag",null,"test1",null,"gep2",null],[null,null,null,null,"dag",null,"test1",null,null],[null,null,null,null,null,"dag",null,"test1",null],[null,null,null,null,null,null,"dag",null,"test1"],[null,null,null,null,null,null,null,"dag",null],[null,null,null,null,null,null,null,null,null]]

在控制台中，结果如下所示：

Handsontable.Dom.addEvent(save, 'click', function() {
  var dataarray = JSON.stringify(hot.getData());
  ajax ('json/projectupdate.php', 'POST', {"infos:":dataarray}, function (res) {
    console.log (dataarray)
  });

[["test1","","gep2","",null,null,null,null,null],["","test1","","gep2",null,null,null,null,null],["dag","","test1","","gep2",null,null,null,null],["","dag","","test1",null,"gep2",null,null,null],["","","dag","","test1",null,"gep2",null,null],["","","","dag",null,"test1",null,"gep2",null],[null,null,null,null,"dag",null,"test1",null,null],[null,null,null,null,null,"dag",null,"test1",null],[null,null,null,null,null,null,"dag",null,"test1"],[null,null,null,null,null,null,null,"dag",null],[null,null,null,null,null,null,null,null,null]]

这就是我在表格里写的。 然后我将我的var传递（或至少我尝试传递）到我的（

projectupdate.php

）php文件：

<?php 
  $myFile = "project.json"; 
  $fh = fopen($myFile, 'w') or die("can't open file"); 
  $stringData = $_POST['infos']; 
  $stringData1='{ "data":'$stringData'}'; 
  fwrite($fh, $stringData1); 
  fclose($fh); 
?>

---

$stringData1='{“数据”：“$stringData'}”
看起来应该是
$stringData1='{“数据”：“$stringData'}”
。。。我试过了，但结果是一样的……试着在服务器
var_dump（$\u POST['infos'）上回显它；