在 .js 文件中执行 PHP 代码
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Executing PHP code inside a .js file
提问by Keryn Gill
I'm trying to get a bit of PHP to execute inside of a .js file, but obviously don't know how to do it properly.
我正在尝试在 .js 文件中执行一些 PHP，但显然不知道如何正确执行。
Basically the code is adding some HTML tags to my page, which I am using for a slideout contact form. However the contact form itself is done in Wordpress by a shortcode. So I'm trying to get the shortcode to work inside the code that makes the form slide out.
基本上，代码是向我的页面添加一些 HTML 标签，我将其用于滑出式联系表单。然而，联系表格本身是通过短代码在 Wordpress 中完成的。所以我试图让短代码在使表单滑出的代码中工作。
var phpTest = '<?php do_shortcode("[contact-form-7 id=\'1088\' title=\'Live Chat Form\']"); ?>';
// add feedback box
$this.html('<div id="fpi_feedback"><div id="fpi_title" class="rotate"><h2>'
+ thisSettings.title
+ '</h2></div><div id="fpi_content">'
+ phpTest
+ '</div></div>');
If I change the variable "phpTest" to a regular string with text, it shows up fine, I'm just not sure how to execute the php in this instance.
如果我将变量“phpTest”更改为带有文本的常规字符串，它显示得很好，我只是不确定如何在这种情况下执行 php。
回答by chiliNUT
EDIT: The script type should always be text/javascriptas application/javascriptmay break compatibility with older browsers (I think IE8 and earlier will ignore the script tag with that type). The Content-type, however, should still be application/javascript.
编辑：脚本类型应始终text/javascript为application/javascript可能会破坏与旧浏览器的兼容性（我认为 IE8 及更早版本将忽略具有该类型的脚本标记）。但是，内容类型仍应为application/javascript.
You can't mix in php into a .jsfile, the way you would with a normal .phpfile, since the .jsfile is not preprocessed by the .phpengine the way your .phpfiles are.
您不能像.js处理普通.php文件那样将php 混合到一个文件中，因为该.js文件没有.php像您的.php文件那样由引擎进行预处理。
The most typical way to do this--including php in a js file--is to just have inline JS (stuff between <script>tags) in your .php file. Then it will work as expected.
执行此操作的最典型方法（包括在 js 文件中使用 php <script>）是在 .php 文件中只包含内联 JS（标记之间的内容）。然后它将按预期工作。
Another way to go is to make a js file within php, so start your .php file with
另一种方法是在 php 中创建一个 js 文件，因此在 .php 文件中使用
<?php
header("Content-type: application/javascript");
?>
var jsvar='something';
var othervar='<?php echo $phpVar; ?>';
//<?php //some php ;?>
and then include it on your page like this
然后像这样将其包含在您的页面上
<script src='myjs.php' type='text/javascript'></script>
回答by Brian Graham
I commented saying your question is not possible, however it is indeed possible. This is not recommended, but if you're not worried about the possible security holes, here is a way to accomplish your question:
我评论说你的问题是不可能的，但它确实是可能的。不推荐这样做，但如果您不担心可能存在的安全漏洞，这里有一种方法可以解决您的问题：
Create a .htaccessfile in the same directory as your .jsfiles, with the following:
.htaccess在与您的.js文件相同的目录中创建一个文件，内容如下：
AddHandler application/x-httpd-php .js
<FilesMatch "\.js$">
Header set Content-Type "text/javascript; charset=utf-8"
</FilesMatch>
This will execute your JavaScript files as PHP, then fix the Content-Type for .js files automatically (because they're seen as text when you add the php handler).
这会将您的 JavaScript 文件作为 PHP 执行，然后自动修复 .js 文件的 Content-Type（因为在您添加 php 处理程序时它们被视为文本）。
Note: While this is a quick and dirty solution, a better way would be to use Ajax (see chiliNUT's Answer)
注意：虽然这是一个快速而肮脏的解决方案，但更好的方法是使用 Ajax（请参阅chiliNUT 的答案）
回答by Jayo2k
You can do a ajax post request to a .php file. It is a little dirty trick but it works
您可以对 .php 文件执行 ajax post 请求。这是一个小技巧，但它有效
$.post('thePhpFile',{var1:var1,var2:var2},function(result){
//Code to do with the resulted... like $("#div").html(result);
});
With that trick, you can basicaly do anything you want
有了这个技巧，你基本上可以做任何你想做的事
回答by Jo?o Paulo de Lima
I think you can do something like this using AJAX:
我认为你可以使用 AJAX 做这样的事情：
JS code:
JS代码：
var xmlhttp;
if (window.XMLHttpRequest){
// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}else{
// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function(){
if (xmlhttp.readyState==4 && xmlhttp.status==200){
$this.html('<div id="fpi_feedback"><div id="fpi_title" class="rotate"><h2>'
+ thisSettings.title
+ '</h2></div><div id="fpi_content">'
+ xmlhttp.responseText
+ '</div></div>');
}
}
xmlhttp.open("GET","do_shortcode_file.php",true);
xmlhttp.send();
The do_shortcode_file.php must have something like this:
do_shortcode_file.php 必须是这样的：
PHP code:
PHP代码：
<?php
echo do_shortcode("[contact-form-7 id=\'1088\' title=\'Live Chat Form\']");
回答by Hidran
Suppose your filename is myscript.js:
假设您的文件名是 myscript.js：
in your head tag ( it must be an executable php file):
在您的 head 标签中（它必须是一个可执行的 php 文件）：
<head>
<script type="text/javascript">
<?php
require_once 'myscript.js';
?>
</script>
... ... in this way you are able to execute that file as if it were a php file
... ... 这样您就可以像执行 php 文件一样执行该文件
