Question

我想在jquery中通过ajax在PHP数组或PHP会话中存储值我在php页面上通过ajax发送一些值并想要存储它们

问题：每次数组/会话返回最新发送的值，而不是我发送的先前值我希望以前发送的值应该保留在数组或会话中

我的代码在

下面

Js文件代码

$.ajax({
                url: "http://domain.com/ajax.php",
                type:"POST",
                data: { name : nname , 
                    clas : nclass , 
                    rows : nrows ,
                    cols : ncols , 
                    types : ntype , 
                    check : ncheck , 
                    count : ncldiv
                 },

            success: function(data){
             alert(data); 
           }
            });

PHP文件

<?php
        session_start(); 
        $_SESSION['feilds'] = array();    
        $type = $_POST['types'];
        $name = $_POST['name'];
        $class = $_POST['clas'];
        $rows = $_POST['rows'];
        $cols = $_POST['cols'];
        $check = $_POST['check'];
        $count = $_POST['count'];
         $output_string = array('TYPE'=>$type,'NAME'=>$name,'CLASS'=>$class,'ROWS'=>$rows,'COLS'=>$cols,'REQUIRED'=>$check);
        array_push($_SESSION['feilds'] , $output_string );
        print_r($_SESSION['feilds']);
?>

Answer 1

由于$_SESSION['feilds'] = array();而发生这种情况。

调用页面时$_SESSION['feilds']分配空白数组。这就是为什么你只获得当前值。

使用$_SESSION['feilds']或isset

检查empty是否已存在

if(empty( $_SESSION['feilds'] )) {
  $_SESSION['feilds'] = array();
}

Answer 2

问题是您始终将$_SESSION['feilds']变量实例化为空白数组。使用此：

<?php
    session_start(); 
    if (!isset($_SESSION['feilds'])) {
        $_SESSION['feilds'] = array();
    }
    $type = $_POST['types'];
    $name = $_POST['name'];
    $class = $_POST['clas'];
    $rows = $_POST['rows'];
    $cols = $_POST['cols'];
    $check = $_POST['check'];
    $count = $_POST['count'];
     $output_string = array('TYPE'=>$type,'NAME'=>$name,'CLASS'=>$class,'ROWS'=>$rows,'COLS'=>$cols,'REQUIRED'=>$check);
    array_push($_SESSION['feilds'] , $output_string );
    print_r($_SESSION['feilds']);
?>

Answer 3

    you wrote  $_SESSION['feilds'] = array();
    Every time it  assign a empty array at session so it will wash out previous data. 
if you want to retain your previous data then first add check like 
        if(empty( $_SESSION['feilds'] )) {
          $_SESSION['feilds'] = array();
        }
        after that you assign value to session as you are doing 
hope it will help you :)

在jquery中由ajax在php数组/会话中存储值

3 个答案: