PHP:代码变成HTML<! - 评论? - > [英] PHP: Code gets turned into HTML <!-- Comments? -->
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问题描述
< p>你好<? echo $ name; ?>,,你好吗?< / p>
打印:
< p> Hello<! - ? echo $ name; ? - >,,你好吗?< / p>
作为评论。
function showName(){
document.getElementById (name)。innerHTML =< p> Hello< ;? echo $ name;?>,你好吗?< / p>;
}
因此,我嵌入.js文件,如下所示:
< script type =text / javascriptsrc =base.js>< / script>
因此,在它改变< p id =name> ;< / p>
我得到:
< p id =name>你好<! - ? echo $ name; ? - >,,你好吗?< / p>
我有.php文件中的代码,它似乎工作正常。现在我把它放在一个单独的base.js文件中,它不再起作用。帮助!
解决方案
这是因为它不再是PHP。
更改为
< script type =text / javascriptsrc =base.php>< / script> ;
并且有一个
<?php头(content-type:text / javascript);
$ name =...;
?>
function showName(){
document.getElementById(name)。innerHTML =< p> Hello<?php echo $ name;?>,你好吗? < / p>中;
}
或
改为
function showName(name){
document.getElementById(name)。innerHTML =< p> Hello+ name +,你好吗?< / p>;
}
在php文件中有
< script>
//使用json_encode使脚本注入的字符串安全。
//仍然需要引用单个字符串
showName(<?php echo json_encode($ name);?>);
< / script>
when I enter in code like this:
<p>Hello <? echo $name; ?>, How are you?</p>
It prints:
<p>Hello <!--? echo $name; ?-->, How are you?</p>
As a comment. I have it in a file called base.js with this code:
function showName() {
document.getElementById("name").innerHTML = "<p>Hello <? echo $name; ?>, How are you?</p>";
}
So I embed the .js file like so:
<script type="text/javascript" src="base.js"></script>
So, after it changes the <p id="name"></p>
I get:
<p id="name">Hello <!--? echo $name; ?-->, How are you?</p>
I had the code in the .php file, and it seemed to work fine. Now that I have it in a separate base.js file, it ceases to function. Help!
解决方案
That is because it is no longer php.
Change to
<script type="text/javascript" src="base.php"></script>
and have a
<?php header("content-type:text/javascript");
$name = "...";
?>
function showName() {
document.getElementById("name").innerHTML = "<p>Hello <?php echo $name; ?>, How are you?</p>";
}
Or
change to
function showName(name) {
document.getElementById("name").innerHTML = "<p>Hello "+name+", How are you?</p>";
}
and in the php file have
<script>
// using json_encode to make the string safe for script injection.
// Still needs quotes for a single string
showName("<?php echo json_encode($name); ?>");
</script>
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