在PHP中的Javascript中回显PHP变量
[英]Echo PHP variable in Javascript in PHP
问题描述
This may seem like an odd question, and it may have been answered elsewhere...but frankly I'm not quite sure how to phrase a search any better. 
这似乎是一个奇怪的问题，并且可能已经在其他地方回答了……但是坦率地说，我不太确定如何更好地表达搜索词。
Essentially, I am trying to write an entire HTML and Javascript page in PHP (this way I can easily call and manipulate SQL queries...I know it doesn't make a lot of sense, but it's my last resort for an upcoming deadline). 本质上，我试图用PHP编写整个HTML和Javascript页面（通过这种方式，我可以轻松地调用和操作SQL查询...我知道这没有多大意义，但这是我在即将到来的截止日期前的最后选择）。
Anyways, I want to call/append to a PHP variable (the SQL query) in my Javascript...Something like this: 无论如何，我想在我的Javascript中调用/附加到PHP变量（SQL查询）...类似这样的事情：
mysql_connect("$host", "$username", "$password")or die("cannot connect");
mysql_select_db("$db_name")or die("cannot select DB");
$myquery = "SELECT `xxx`, `yyy` FROM `$tbl_name`";
$query = mysql_query($myquery);
$data = array();
for ($i = 0; $i < mysql_num_rows($query); $i++) {
$data[] = mysql_fetch_assoc($query);
}
$data1 = json_encode($data);
echo '<!DOCTYPE html>
<html>
<head></head>
<body>
<script>
data_arr = {$data1}
...
...
This doesn't seem to be working though. 不过，这似乎不起作用。 I've tried: 我试过了：
data_arr = {$data1}
and 和
data_arr = {'.$data1.'}
No luck so far. 到目前为止没有运气。 Is there anything I can do? 有什么我可以做的吗？
2 个解决方案
解决方案1
1 2013-04-25 00:26:28
Change the quotes to double quotes then use the data_arr = {$data1} one. 将引号更改为双引号，然后使用data_arr = {$data1} 。 Single quotes dont recognize values at all. 单引号根本不识别值。
解决方案2
0 2013-04-25 02:09:11
Try this, this might work: 试试这个，这可能起作用：
PHP: PHP：
<?php $data1 = "hello"; ?>
JS: JS：
var data_arr = {"<?=$data1?>"}
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