I retrieve three pieces of information from the database, one integer, one string, and one date.
我从数据库中检索三段信息，一个整数、一个字符串和一个日期。
I echo them out to verify the variables contain the data.
我重复它们以验证变量包含数据。
When I then use the variables to populate three input boxes on the page, they do not populate correctly.
然后，当我使用变量填充页面上的三个输入框时，它们不会正确填充。
The following do not work:
以下方法无效:
id: <input type="text" name="idtest" value=$idtest>
Yes, the variable must be inside <?php var ?> for it to be visible.
是的，变量必须在 使其可见。
So:
所以:
id: <input type="text" name="idtest" value=<?php $idtest ?> />
The field displays /.
字段显示/。
When I escape the quotes,
当我逃离引号时，
id: <input type="text" name="idtest" value=\"<?php $idtest ?>\" />
the field then displays \"\".
然后该字段显示\“\”。
With single quotes
用单引号
id: <input type="text" name="idtest" value='<?php $idtest ?>' />
the field displays nothing or blank.
该字段不显示任何内容或空白。
With single quotes escaped,
用单引号转义,
id: <input type="text" name="idtest" value=\'<?php $name ?>\' />
the field displays \'\'.
字段显示\ ' \ '。
With a forward slash (I know that's not correct, but to eliminate it from the discussion),
加上一个斜杠(我知道这是不对的，但是为了把它从讨论中删除)，
id: <input type="text" name="idtest" value=/"<?php $name ?>/" />
the field displays /"/".
字段显示/“/”。
Double quotes, escape double quotes, escape double quotes on left side only, etc. do not work.
双引号、转义双引号、仅在左边转义双引号等都不起作用。
I can set an input box to a string. I have not tried using a session variable as I prefer to avoid do that.
我可以将输入框设置为字符串。我还没有尝试使用会话变量，因为我宁愿避免使用会话变量。
What am I missing here?
我错过了什么?
6 个解决方案
#1
33
Try something like this:
试试这样:
<input type="text" name="idtest" value="<?php echo htmlspecialchars($name); ?>" />
That is, the same as what thirtydot suggested, except preventing XSS attacks as well.
这和thirtydot的建议一样，除了防止XSS攻击。
You could also use the <?= syntax (see the note), although that might not work on all servers. (It's enabled by a configuration option.)
您还可以使用
#2
6
You need, for example:
你需要,例如:
<input type="text" name="idtest" value="<?php echo $idtest; ?>" />
The echo function is what actually outputs the value of the variable.
echo函数实际上输出变量的值。
#3
2
From the HTML point of view everything's been said, but to correct the PHP-side approach a little and taking thirtydot's and icktoofay's advice into account:
从HTML的角度来看，一切都已经说过了，但是要纠正PHP-side的方法，并将thirtydot和icktoofay的建议考虑进去:
<?php echo '<input type="text" name="idtest" value="' . htmlspecialchars($idtest) . '">'; ?>
#4
2
Solution
You are missing an echo. Each time that you want to show the value of a variable to HTML you need to echo it.
你错过了一个回音。每次要向HTML显示变量的值时，都需要对其进行回显。
<input type="text" name="idtest" value="<?php echo $idtest; ?>" >
Note: Depending on the value, your echo is the function you use to escape it like htmlspecialchars.
注意:根据值的不同，您的echo是您用来像htmlspecialchars那样逃离它的函数。
#5
0
If you want to read any created function, this how we do it:
如果你想阅读任何创建的函数，我们是这样做的:
<input type="button" value="sports" onClick="window.open('<?php sports();?>', '_self');">
#6
-2
I have been doing PHP for my project, and I can say that the following code works for me. You should try it.
我一直在为我的项目做PHP，我可以说下面的代码对我有用。你应该试一试。
echo '<input type = "text" value = '.$idtest.'>';
#1
33
Try something like this:
试试这样:
<input type="text" name="idtest" value="<?php echo htmlspecialchars($name); ?>" />
That is, the same as what thirtydot suggested, except preventing XSS attacks as well.
这和thirtydot的建议一样，除了防止XSS攻击。
You could also use the <?= syntax (see the note), although that might not work on all servers. (It's enabled by a configuration option.)
您还可以使用
#2
6
You need, for example:
你需要,例如:
<input type="text" name="idtest" value="<?php echo $idtest; ?>" />
The echo function is what actually outputs the value of the variable.
echo函数实际上输出变量的值。
#3
2
From the HTML point of view everything's been said, but to correct the PHP-side approach a little and taking thirtydot's and icktoofay's advice into account:
从HTML的角度来看，一切都已经说过了，但是要纠正PHP-side的方法，并将thirtydot和icktoofay的建议考虑进去:
<?php echo '<input type="text" name="idtest" value="' . htmlspecialchars($idtest) . '">'; ?>
#4
2
Solution
You are missing an echo. Each time that you want to show the value of a variable to HTML you need to echo it.
你错过了一个回音。每次要向HTML显示变量的值时，都需要对其进行回显。
<input type="text" name="idtest" value="<?php echo $idtest; ?>" >
Note: Depending on the value, your echo is the function you use to escape it like htmlspecialchars.
注意:根据值的不同，您的echo是您用来像htmlspecialchars那样逃离它的函数。
#5
0
If you want to read any created function, this how we do it:
如果你想阅读任何创建的函数，我们是这样做的:
<input type="button" value="sports" onClick="window.open('<?php sports();?>', '_self');">
#6
-2
I have been doing PHP for my project, and I can say that the following code works for me. You should try it.
我一直在为我的项目做PHP，我可以说下面的代码对我有用。你应该试一试。
echo '<input type = "text" value = '.$idtest.'>';