从count变量创建php $ _SESSION

问题描述：

I am trying to create a $_SESSION from example code count($result). I have decalred the variable like thus:

$result = array();
$result[] = $boxdest;

This is working fine on the page where I run it but I need to pass the value to a page to use in php mail() function. I have tried

$_SESSION['result'] = $result;

But all I get is Resource id #40. How do I pass this variable to another page. Full code example here: http://sandbox.onlinephpfunctions.com/code/ba0a34774e30c93edfdf02f531bb199c681021e3 Many thanks

我正在尝试从示例代码计数（$ result）创建$ _SESSION。我已经像这样对变量进行了decalred： p>

  $ result = array（）; 
 $ result [] = $ boxdest; 
  code>  pre> \  n 
 这在我运行它的页面上工作正常但我需要将值传递给在php mail（）函数中使用的页面。 我试过了 p> 
 
 
  $ _ SESSION ['result'] = $ result; 
  code>  pre> 
 
 但我得到的只是 资源ID＃40。 如何将此变量传递给另一个页面。 完整的代码示例： http://sandbox.onlinephpfunctions.com/code/ba0a34774e30c93edfdf02f531bb199c681021e3 非常感谢  p> 
  div>

答

This is more of a critique of the code rather than a solution to the problem:

$_SESSION['result'] = []; //Clear it in case there's an old value here.
if (isset($_POST['boxdest']) && is_array($_POST['boxdest']) && !empty($_POST['boxdest'])) { //Merged condition
    $destroydata = explode(',', $_POST['boxdest'][0]); //Split was deprecated
    $result = array_filter($destroydata);
    if (empty($result) { 
           $boxdesterror = '<span style="font-weight:bold;font-size:12px;color: #ff0000;">' . 'BOX DESTRUCTION ERROR! ' . '</span>' . '<span style="font-weight:normal;color: #000;background-color:#ffa;">' . 'You must enter a box for destruction' . '</span>';
           echo "<script language=\"JavaScript\">
";
           echo 'alert("BOX DESTRUCTION ERROR:
You must enter a box for destruction.");';
           echo "</script>";
           echo $boxdesterror;
    } else {
        echo 'You wish to destroy ' . count($result) . ' box(es): ' . '<div style="word-wrap:break-word;white-space: pre-wrap;overflow:auto !important;height: 100px; width: 250px; border: 1px solid #666; background-color: #fff; padding: 4px;">' . '<span style="font-weight:bold;color: #000;">' . implode(', ', $boxdest) . '</span>' . '</div>' . '<p />';

        $_SESSION['result'] = $result; //Did you really need both?
        $flag = 1;
     }
}

This should be the same results. I don't see why a resource would pop up from nowhere though.

答

U can't store any Resource in PHP session

https://*.com/a/42389037/5361130

http://php.net/manual/en/function.serialize.php

EDIT

if your $result is result of function like mysqli_query or something like this, use mysqli_num_rows to get number of rows not count

http://php.net/manual/en/mysqli-result.num-rows.php

$result = mysqli_num_rows($boxdest)

$_SESSION['result'] = mysqli_num_rows($boxdest)

从count变量创建php $ _SESSION

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