我使用一个jQuery方法将数据传递给php方法并获得响应,这样我就可以重用返回的数据。
我得到一个错误:
DO_LicenseCount: find: CHECK autofetchd
DO_LicenseCount: find: DONE
DO_LicenseCount: FETCH: a:1:{s:12:"LicenseCount";s:2:"10";}
DO_LicenseCount: fetchrow LINE: LicenseCount = 10
DO_LicenseCount: fetchrow: LicenseCount DONE
Fatal error: Cannot access empty property in C:'PROJECTS'BRIAN'AMS'Web Application'inc'pear'DB'DataObject.php on line 3780
我使用的是WAMP堆栈-PHP 5.1.6和PearPHP。
jQuery:
<script>
function GetLicenseCount()
{
var SoftwareTypeFK = document.getElementById("sldSoftwareTypeList").value;
var SoftwareNameFK = document.getElementById("SoftwareTypeList").value;
console.log(SoftwareTypeFK);
console.log(SoftwareNameFK);
$.ajax({
type: "GET",
url: "/AMS_LOCAL/Modules/SoftwareLicenseAllocations/GetLicenseCount.php",
data: {SoftwareTypeFK: SoftwareTypeFK, SoftwareFK: SoftwareNameFK},
success: function(result){
$("txtLicenseCount").text(result);
console.log(result);
}
});
};
</script>
GetLicenseCount.php:
<?php
//Local include path format
set_include_path('C:'PROJECTS'BRIAN'AMS'Web Application;C:'PROJECTS'BRIAN'AMS'Web Application'inc'pear;C:'PROJECTS'BRIAN'AMS'Web Application'js;');
//Search Screen
require_once('vars.php');
require_once('funcs.php');
$SoftwareTypeID = $_GET['SoftwareTypeFK'];
$SoftwareNameID = $_GET['SoftwareFK'];
var_dump($SoftwareTypeID);
var_dump($SoftwareNameID);
DO_Common::DebugLevel(5);
$LicenseCountOptions = DO_Common::toAssocArray(array(
//$LicenseCountOptions = DO_LicenseCount::toAssocArray(array(
'tableName' => 'LicenseCount'
,'selectAdd' => 'LicenseCount'
,'whereAdd' => 'SoftwareFK=' . $SoftwareNameID . ' AND sldSoftwareTypeFK=' . $SoftwareTypeID
));
var_dump($LicenseCountOptions);
echo $LicenseCountOptions;
var_dump($LicenseCountOptions);
?>
DataObject.php的一部分:
function toValue($col,$format = null)
{
if (is_null($format)) {
**return $this->$col;**
echo $col;
}
$cols = $this->table();
switch (true) {
case (($cols[$col] & DB_DATAOBJECT_DATE) && ($cols[$col] & DB_DATAOBJECT_TIME)):
if (!$this->$col) {
return '';
}
$guess = strtotime($this->$col);
if ($guess != -1) {
return strftime($format, $guess);
}
// eak... - no way to validate date time otherwise...
return $this->$col;
case ($cols[$col] & DB_DATAOBJECT_DATE):
if (!$this->$col) {
return '';
}
$guess = strtotime($this->$col);
if ($guess != -1) {
return strftime($format,$guess);
}
// try date!!!!
require_once 'Date.php';
$x = new Date($this->$col);
return $x->format($format);
case ($cols[$col] & DB_DATAOBJECT_TIME):
if (!$this->$col) {
return '';
}
$guess = strtotime($this->$col);
if ($guess > -1) {
return strftime($format, $guess);
}
// otherwise an error in type...
return $this->$col;
case ($cols[$col] & DB_DATAOBJECT_MYSQLTIMESTAMP):
if (!$this->$col) {
return '';
}
require_once 'Date.php';
$x = new Date($this->$col);
return $x->format($format);
case ($cols[$col] & DB_DATAOBJECT_BOOL):
if ($cols[$col] & DB_DATAOBJECT_STR) {
// it's a 't'/'f' !
return ($this->$col == 't');
}
return (bool) $this->$col;
default:
return sprintf($format,$this->col);
}
}
有问题的行是包含在**return $this->$col;
中的行(行3780)。
我在谷歌上搜索了一下,发现我应该把return $this->$col;
变成return $this->col;
,但这是默认情况下在PEAR包中找到的,我没有对代码做任何修改。当我更改它时,会出现许多错误。
我是不是错过了我在这里没有看到的东西?
不确定从哪里开始,因为我看不出错误中提到了哪一行,但这个
Fatal error: Cannot access empty property
通常意味着访问对象的成员时出现错误。在这个答案中可以看到导致这种情况的一个例子。看起来你可能在做这样的事情:
<?php
class FooBar
{
public function baz()
{
$col = 'someprop';
$this->$col = 'weeee'; // There is no 'someprop' member of $this
}
}
如果你能提供错误中引用的确切行,那可以缩小很多范围
在你的代码中,你有
function toValue($col,$format = null)
{
if (is_null($format)) {
**return $this->$col;**
echo $col;
}
// snip ...
把echo
行放在返回之前,然后执行一个骰子来停止执行,看看发生了什么。本质上,当$col
的值不是$this
上的属性时,脚本试图访问$this->$col
,所以如果$col
是字符串'something'
,就没有属性$this->something
。
删除$
不是问题所在,它可能应该存在。您可以尝试修改功能,例如:
function toValue($col,$format = null)
{
if(is_null($format)) {
if(isset($this->$col))
return $this->$col;
else
return null; // Or false or whatever you would like
}
// snip...