使用jquery ajax PHP从数据库读取分子式的问题 [英] Problem reading molecular formula from database using jquery ajax PHP

问题描述

我在数据库中有几千种化学产品。我需要在网站上动态更新它们，每页15页以及分页。我使用下面的代码从DB获取数据。它在Localhost中运行良好，但在服务器上传时，分子式无法正确呈现。

Ex：

I have few thousand chemical products in database. I need to update them dynamically in the website with 15 per page along with pagination. I am using below code for getting the data from DB. Its working fine in Localhost but when uploaded in server the molecular formula does not render properly.
Ex:

C??H??N?NAO?

<?php

/*** mysql hostname ***/
$hostname = 'localhost';

/*** mysql username ***/
$username = 'admin_bio';

/*** mysql password ***/
$password = 'bio_organics';

$page_number = $_GET['pageNumber'];

$start = $page_number * 15;

$products_per_page = 15;

$dbname = 'bio_organics';

$dbh = new PDO("mysql:host=$hostname;dbname=$dbname", $username, $password);

$response = $dbh->query("SELECT * FROM products LIMIT $start,$products_per_page ")->fetchAll(PDO::FETCH_ASSOC);

echo json_encode($response);

$dbh = null;

?>

我的尝试：



我试图用jQuery ajax在网页中呈现上面的json数据。



< script>

jQuery（document）.ready（function（）

{

var pageNumber = window.location.href.split（=）[1];

if（pageNumber == undefined）

{

pageNumber = 0;

}

其他

{

pageNumber = pageNumber - 1;

}

jQuery.ajax（

{

类型：GET，

dataType：JSON，

url：products_list.php？ pageNumber =+ pageNumber，

成功：功能（数据）

{

var product_listing ='';

for（i = 0; i< jquery（data）.length; i ++）>

{

var pageNumbers ='< option value ='+ data [i] .id +'>'+ data [i] .id +'< / o ption>'

if（product_listing ==''）

{

product_listing ='

What I have tried:

I tried to render the above json data in Webpage with jQuery ajax.

<script>
jQuery(document).ready(function()
{
var pageNumber = window.location.href.split("=")[1];
if(pageNumber==undefined)
{
pageNumber = 0;
}
else
{
pageNumber = pageNumber - 1;
}
jQuery.ajax(
{
type:"GET",
dataType:"JSON",
url:"products_list.php?pageNumber="+pageNumber,
success:function(data)
{
var product_listing = '';
for(i=0;i<jquery(data).length;i++)>
{
var pageNumbers = '<option value="'+ data[i].id +'">'+ data[i].id +'</option>'
if(product_listing=='')
{
product_listing = '

< img style =height：100px;src ='+ data [i] .image_url +'alt = 产品/>

'+ data [i] .chemical_name +'

分子式：'+ data [i] .mol_formula +'

CAS号:: '+ data [i] .cas_number +'

'+ data[i].chemical_name +'

Molecular Formula :'+ data[i].mol_formula +'

CAS No. ::'+ data[i].cas_number +'

​​查询

';

}

其他

{

product_listing = product_listing +'

';
}
else
{
product_listing = product_listing + '

< img style =height：100px;src ='+ data [i] .image_url +'alt =Product/>

'+ data [i] .chemical_name +'

分子式：'+ data [i] .mol_formula +'

CAS号:: '+ data [i] .cas_number +'

'+ data[i].chemical_name +'

Molecular Formula :'+ data[i].mol_formula +'

CAS No. ::'+ data[i].cas_number +'

​​查询

';

}

}



jQuery（＃all_products）。html（product_listing）;

}

}）;

}）;

< / script>

';
}
}

jQuery("#all_products").html(product_listing);
}
});
});
</script>

推荐答案

hostname ='localhost';

/ *** mysql用户名*** /

hostname = 'localhost'; /*** mysql username ***/

username ='admin_bio';

/ * ** mysql密码*** /

username = 'admin_bio'; /*** mysql password ***/

password ='bio_organics';

password = 'bio_organics';

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