我应该如何回显包含特殊字符的 PHP 字符串变量？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/17150403/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
How should I echo a PHP string variable that contains special characters?
提问by PHP
I'm trying to populate a form with some data that contains special characters (e.g. single quote, double quote,<,>,?,","".~,,!@#$%^&*()_+}{":?<<>,./;'[.] etc) :
我正在尝试使用一些包含特殊字符的数据填充表单（例如单引号、双引号、<、>、?、"、"".~,,!@#$%^&*()_+} {":?<<>,./;'[.] 等）：
<input type="text" name="message" size="200" maxlength="200"
value =<?php echo $message;?>>
However, $message, which comes from a MySQL table, isn't displayed correctly - any HTML output that should be in $messageis broken.
但是，$message来自 MySQL 表的 没有正确显示 - 任何应该在其中的 HTML 输出$message都已损坏。
How do I do this properly?
我该如何正确执行此操作？
回答by Alexandre Danault
This will prevent your tags from being broken by the echo:
这将防止您的标签被回声破坏：
<?php echo htmlentities($message); ?>
<?php echo htmlentities($message); ?>
回答by Touch
If you want to display it
如果你想显示它
echo htmlspecialchars($messge, ENT_QUOTES, 'UTF-8');
That's what I usually do.
这就是我通常所做的。
Since the answers are difference:
由于答案不同：
htmlentities-vs-htmlspecialcharsis worth checking out.
回答by Hugo Delsing
I normally use the following code, see htmlspecialchars
我通常使用以下代码，请参阅htmlspecialchars
<?php echo htmlspecialchars($videoId, ENT_QUOTES | ENT_HTML5); ?>
回答by Degar007
whats wrong with using a constant ?
使用常量有什么问题？
<?php
define(foo,'<,>,?,","".~,,!@#$%^&*()_+}{":?<<>,./;');
$foo2="'[.]";
echo constant('foo').$foo2;
?>
you need to put the '[.]' into a variable, as a constant will break on a '(single quote).
您需要将 '[.]' 放入变量中，因为常量会在'（单引号）上中断。
