Ajax 请求需要 6 秒才能完成,不知道为什么
我正在开发一个用户界面,“仪表板”,上面有一些 div 框,其中包含与当前登录用户相关的信息。他们的日历、待办事项列表和一些从谷歌电子表格动态提取的统计数据。
我在这里找到: http://code.google.com/apis/spreadsheets/数据/3.0/reference.html#CellFeed 可以使用如下 URL 从工作表中请求特定单元格:spreadsheets.google.com/feeds/cells/0AnhvV5acDaAvdDRvVmk1bi02WmJBeUtBak5xMmFTNEE/1/public/basic/R3C2
我简要地研究了 Zend GData,但它似乎比我想要做的要复杂得多。
所以我写了两个 php 函数:(在 hours.php 中)
1.) 根据参数 row、column 和 Sheet
对生成的 url 执行 file_get_contents()
2.) 使用循环中的第一个来查找与给定名称关联的列号。
所以基本上我使用 jQuery 执行一个 ajax 请求,如下所示:
// begin js function
function ajaxStats(fullname)
{
$.ajax({
url: "lib/dashboard.stats.php?name="+fullname,
cache: false,
success: function(html){
document.getElementById("stats").innerHTML = html;
}
});
}
// end js function
// begin filehours.php
<?php
function getCol($name)
{
$r=1;
$c=2;
while(getCell($r,$c,1) != $name)
{ $c++; }
return $c;
}
function getCell($r, $c, $sheet)
{
$baseurl = "http://spreadsheets.google.com/feeds/cells/";
$spreadsheet = "0AnhvV5acDaAvdDRvVmk1bi02WmJBeUtBak5xMmFTNEE/";
$sheetID = $sheet . "/";
$vis = "public/";
$proj = "basic/";
$cell = "R".$r."C".$c;
$url = $baseurl . $spreadsheet . $sheetID . $vis . $proj . $cell . "";
$xml = file_get_contents($url);
//Sometimes the data is not xml formatted,
//so lets try to remove the url
$urlLen = strlen($url);
$xmlWOurl = substr($xml, $urlLen);
//then find the Z (in the datestamp, assuming its always there)
$posZ = strrpos($xmlWOurl, "Z");
//then substr from z2end
$data = substr($xmlWOurl, $posZ + 1);
//if the result has more than ten characters then something went wrong
//And most likely it is xml formatted
if(strlen($data) > 10)
{
//Asuming we have xml
$datapos = strrpos($xml,"<content type='text'>");
$datapos += 21;
$datawj = substr($xml, $datapos);
$endcont = strpos($datawj,"</content>");
return substr($datawj, 0,$endcont);
}
else
return $data;
}
?>
//Endhours.php
//Begindashboard.stats.php
<?php
session_start();
// This file is requested using ajax from the main dashboard because it takes so long to load,
// as to not slow down the usage of the rest of the page.
if (!empty($_GET['name']))
{
include "hours.php";
// GetCollumn of which C#R1 = users name
$col = getCol($_GET['name']);
// then get cell from each of the sheets for that user,
// assuming they are in the same column of each sheet
$s1 = getcell(3, $col, 1);
$s2 = getcell(3, $col, 2);
$s3 = getcell(3, $col, 3);
$s4 = getcell(3, $col, 4);
// Store my loot in the session varibles,
// so next time I want this, I don't need to fetch it
$_SESSION['fhrs'] = $s1;
$_SESSION['fdol'] = $s2;
$_SESSION['chrs'] = $s3;
$_SESSION['bhrs'] = $s4;
}
//print_r($_SESSION);
?>
<!-- and finally output the information formated for the widget-->
<strong>You have:</strong><br/>
<ul style="padding-left: 10px;">
<li> <strong><?php echo $_SESSION['fhrs']; ?></strong> fundraising hours<br/></li>
<li>earned $<strong><?php echo $_SESSION['fdol']; ?></strong> fundraising<br/></li>
<li> <strong><?php echo $_SESSION['chrs']; ?></strong> community service hours<br/></li>
<li> <strong><?php echo $_SESSION['bhrs']; ?></strong> build hours <br/></li>
</ul>
//enddashboard。 stats.php
我认为我失去 4 秒的地方是 getCol()
中的 while 循环 [hours.php]
我该如何改进这一点并减少加载时间?
我应该放弃这个并转到 Zend GData 吗?
如果是那个 while 循环,我是否应该尝试将电子表格中的每个用户列号存储在也验证登录的用户数据库中?
I am working on a user interface, "dashboard" of sorts which has some div boxes on it, which contain information relevant to the current logged in user. Their calendar, a todo list, and some statistics dynamically pulled from a google spreadsheet.
I found here:
http://code.google.com/apis/spreadsheets/data/3.0/reference.html#CellFeed
that specific cells can be requested from the sheet with a url like this:spreadsheets.google.com/feeds/cells/0AnhvV5acDaAvdDRvVmk1bi02WmJBeUtBak5xMmFTNEE/1/public/basic/R3C2
I briefly looked into Zend GData, but it seemed way more complex that what I was trying to do.
So instead I wrote two php functions: (in hours.php)
1.) does a file_get_contents()
of the generated url, based on the parameters row, column, and sheet
2.) uses the first in a loop to find which column number is associated with the given name.
So basically I do an ajax request using jQuery that looks like this:
// begin js function
function ajaxStats(fullname)
{
$.ajax({
url: "lib/dashboard.stats.php?name="+fullname,
cache: false,
success: function(html){
document.getElementById("stats").innerHTML = html;
}
});
}
// end js function
// begin file hours.php
<?php
function getCol($name)
{
$r=1;
$c=2;
while(getCell($r,$c,1) != $name)
{ $c++; }
return $c;
}
function getCell($r, $c, $sheet)
{
$baseurl = "http://spreadsheets.google.com/feeds/cells/";
$spreadsheet = "0AnhvV5acDaAvdDRvVmk1bi02WmJBeUtBak5xMmFTNEE/";
$sheetID = $sheet . "/";
$vis = "public/";
$proj = "basic/";
$cell = "R".$r."C".$c;
$url = $baseurl . $spreadsheet . $sheetID . $vis . $proj . $cell . "";
$xml = file_get_contents($url);
//Sometimes the data is not xml formatted,
//so lets try to remove the url
$urlLen = strlen($url);
$xmlWOurl = substr($xml, $urlLen);
//then find the Z (in the datestamp, assuming its always there)
$posZ = strrpos($xmlWOurl, "Z");
//then substr from z2end
$data = substr($xmlWOurl, $posZ + 1);
//if the result has more than ten characters then something went wrong
//And most likely it is xml formatted
if(strlen($data) > 10)
{
//Asuming we have xml
$datapos = strrpos($xml,"<content type='text'>");
$datapos += 21;
$datawj = substr($xml, $datapos);
$endcont = strpos($datawj,"</content>");
return substr($datawj, 0,$endcont);
}
else
return $data;
}
?>
//End hours.php
//Begin dashboard.stats.php
<?php
session_start();
// This file is requested using ajax from the main dashboard because it takes so long to load,
// as to not slow down the usage of the rest of the page.
if (!empty($_GET['name']))
{
include "hours.php";
// GetCollumn of which C#R1 = users name
$col = getCol($_GET['name']);
// then get cell from each of the sheets for that user,
// assuming they are in the same column of each sheet
$s1 = getcell(3, $col, 1);
$s2 = getcell(3, $col, 2);
$s3 = getcell(3, $col, 3);
$s4 = getcell(3, $col, 4);
// Store my loot in the session varibles,
// so next time I want this, I don't need to fetch it
$_SESSION['fhrs'] = $s1;
$_SESSION['fdol'] = $s2;
$_SESSION['chrs'] = $s3;
$_SESSION['bhrs'] = $s4;
}
//print_r($_SESSION);
?>
<!-- and finally output the information formated for the widget-->
<strong>You have:</strong><br/>
<ul style="padding-left: 10px;">
<li> <strong><?php echo $_SESSION['fhrs']; ?></strong> fundraising hours<br/></li>
<li>earned lt;strong><?php echo $_SESSION['fdol']; ?></strong> fundraising<br/></li>
<li> <strong><?php echo $_SESSION['chrs']; ?></strong> community service hours<br/></li>
<li> <strong><?php echo $_SESSION['bhrs']; ?></strong> build hours <br/></li>
</ul>
//end dashboard.stats.php
I think that where I am loosing my 4 secs is the while loop in getCol()
[hours.php]
How can I improve this, and reduce my loading time?
Should I just scrap this, and go to Zend GData?
If it is that while loop, should i try to store each users column number from the spreadsheet in the user database that also authenticates login?
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我在 while 循环中没有正确的中断,即使在找到合适的人之后它仍然继续循环。
另外,请求需要时间才能转到谷歌电子表格。每个请求大约需要 0.025 秒。
我还与 ZendGdata 的用户交谈,他们说请求速度并没有快多少。
I didn't have the proper break in the while loop, it continued looping even after it found the right person.
Plus the request take time to go to the google spreadsheet. About .025 second per request.
I also spoke with a user of ZendGdata and they said that the request weren't much faster.