将 PHP 变量作为文本框值
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Putting a PHP variable as a text box value
提问by stark
I am trying to write code that passes a php variable as a textboxes value. Here is the following code I tried:
我正在尝试编写将 php 变量作为文本框值传递的代码。这是我尝试过的以下代码：
echo "<td>"."<input type='text' value='<?php echo $start_date; ?>'/>"."</td>"
This brings up an error : Parse error: syntax error, unexpected T_ECHO, expecting ',' or ';'
这带来了一个错误：解析错误：语法错误，意外的 T_ECHO，期待 ',' 或 ';'
I have tried various methods of re-wording:
我尝试了各种重新措辞的方法：
echo "<input type='text' value='<?php echo $start_date?>'/>";
(this was purely to test as I would like the result in a table row)
（这纯粹是为了测试，因为我希望结果在表格行中）
but this shows:
但这表明：
<?php echo ?>
in the textbox and I also get this error: Notice: Undefined variable: start_date...
在文本框中，我也收到此错误：注意：未定义变量：start_date...
Thanks in advance for any help.
在此先感谢您的帮助。
回答by Anirudh Ramanathan
You don't need tostart one echowithin another. The variable $start_datecan be within double quotes and hence interpolated.
你不需要从echo另一个开始。变量$start_date可以在双引号内，因此可以进行插值。
echo "<td><input type='text' value='$start_date'/></td>"; //no unnecessary concatentation
EDIT:
编辑：
In case of an associative array, for example, to echo $row['start_date']
在关联数组的情况下，例如，回显$row['start_date']
echo "<td><input type='text' value='".$row['start_date']."/></td>";
回答by Suresh Kamrushi
You can try this-
你可以试试这个——
echo "<td>"."<input type='text' value='$start_date;'/>"."</td>";
回答by Suresh Kamrushi
you have to echo once, for example:
你必须回声一次，例如：
echo "<td>"."<input type='text' value='$start_date'/>"."</td>";
回答by Sgarz
Use this:
用这个：
echo '<td><input type="text" value="'.$start_date.'"/></td>';
回答by Rohit Kumar Choudhary
You should always took thin in your mind that if you enclose a variable inside "" double quotes than it can be echoed directly. You don't need use concatenation for this only. Eg
您应该始终牢记，如果将变量括在 "" 双引号内，则可以直接回显。您不需要仅为此使用连接。例如
echo "<td>$rohit</td>"; //here you dont have to echo this like "<td>".$rohit."</td>".
In this as @Cthulhu said use it like that.
正如@Cthulhu所说的那样使用它。
