混合HTML代码与PHP代码

I am trying to use tcpdf library to generate pdf. I have a php file which contains variables like name,company name etc. But for displaying the products I am passing the array to php. Now I want to display each element of array in a table row for that I have to write the php code but somehow I am having problem mixing PHP code with html code.Here is the part whihch contains the problem

我正在尝试使用tcpdf库生成pdf。我有一个php文件，其中包含名称，公司名称等变量。但是为了显示产品，我将数组传递给php。现在我想在表格行中显示数组的每个元素，因为我必须编写PHP代码，但不知怎的，我有问题将PHP代码与HTML代码混合。这是包含问题的部分

    $html .= '<br><br>
              <table border="1" cellpadding="5">
                <tr>
                    <td colspan="3">Invoice # {invoice_ref_id}</td>            
                </tr>
                <tr>
                    <td><b>Product</b></td>
                    <td><b>Quantity</b></td>
                    <td align="right"><b>Amount (Rs.)</b></td>
                </tr>'.
                foreach($item as products): .'   //This part contains error
                <tr>
                    <td>'echo products['item']'</td>
                    <td>'echo products['quantity']'</td>
                    <td align="right">75</td>
                </tr>
                <tr>
                    <td colspan="3" align="right"><b>Total: 375</b></td>
                </tr>'
                endforeach;
             '</table>';

    $html .= '<br><br>Some more text can come here...';

4 个解决方案

#1

You can't continue the html with a concatenation straight after the foreach. You have to do $html .= again.

你不能在foreach之后直接连接html。你必须再做$ html。=。

This

这个

</tr>'.
foreach($item as products): .'   //This part contains error
<tr>

should be this

应该是这个

</tr>';
foreach($item as products): $html .= '   //This part contains error
<tr>

The same goes at the end of the foreach:

在foreach结束时也是如此：

</tr>';
endforeach;
$html .= '</table>';

#2

You are doing it wrong way. This should work -

你做错了。这应该工作 -

$html .= '<br><br>
              <table border="1" cellpadding="5">
                <tr>
                    <td colspan="3">Invoice # {invoice_ref_id}</td>            
                </tr>
                <tr>
                    <td><b>Product</b></td>
                    <td><b>Quantity</b></td>
                    <td align="right"><b>Amount (Rs.)</b></td>
                </tr>';
                foreach($item as products) {   //This part contains error
                $html .= '<tr>
                    <td>'. products['item']. '</td>
                    <td>'. products['quantity']. '</td>
                    <td align="right">75</td>
                    ........ ';
                }
$html .= '</table>';
$html .= '<br><br>Some more text can come here...';

#3

thie right way of doing something like this

这样做的正确方法

 $html .= '<br><br>
          <table border="1" cellpadding="5">
            <tr>
                <td colspan="3">Invoice # {invoice_ref_id}</td>            
            </tr>
            <tr>
                <td><b>Product</b></td>
                <td><b>Quantity</b></td>
                <td align="right"><b>Amount (Rs.)</b></td>
            </tr>';
            foreach($item as products): 
             $html .='   //This part contains error
            <tr>
                <td>'echo products['item']'</td>
                <td>'echo products['quantity']'</td>
                <td align="right">75</td>
            </tr>
            <tr>
                <td colspan="3" align="right"><b>Total: 375</b></td>
            </tr>';

            endforeach;
       $html .=  '</table>';

$html .= '<br><br>Some more text can come here...';

#4

Instead of concatenating your HTML in a string that you will then need to echo, I would go to something like this :

而不是将你的HTML连接成一个你需要回应的字符串，我会这样做：

<br><br>
<table border="1" cellpadding="5">
    <tr>
        <td colspan="3">Invoice # {invoice_ref_id}</td>            
    </tr>
    <tr>
        <td><b>Product</b></td>
        <td><b>Quantity</b></td>
        <td align="right"><b>Amount (Rs.)</b></td>
    </tr>
    <?php foreach($item as products){ ?>  
    <tr>
        <td><?php echo products['item'] ?></td>
        <td><?php echo products['quantity'] ?></td>
        <td align="right">75</td>
    </tr>
    <tr>
        <td colspan="3" align="right"><b>Total: 375</b></td>
    </tr>
    <?php> } //ending the foreach ?>
</table>
<br><br>Some more text can come here...

Notice how even here HTML code is still correctly highlighted ? It will probably be the same in your editor of choice. I find it much more readable, and you even avoid possible character escaping issues.

请注意，即使这里HTML代码仍然正确突出显示？它可能与您选择的编辑器中的相同。我发现它更具可读性，甚至可以避免可能的字符转义问题。

NOTE : I didn't fix your HTML, but there are several bad practices in it regarding semantics or even use of obsolete/deprecated tags. Here are a few :

注意：我没有修复你的HTML，但是它中有一些关于语义甚至使用过时/弃用标记的不良做法。以下是一些：

Don't use anything changing layout in your HTML, this is what CSS are for. For example, don't use border or cellpadding attributes on your table, use table {border: 1px solid #ccc;} (you can of course change color, that's an example) and table td {padding: 5px;} instead.
不要在HTML中使用任何改变布局的东西，这就是CSS的用途。例如，不要在表上使用border或cellpadding属性，使用表{border：1px solid #ccc;}（当然可以更改颜色，这是一个示例）和table td {padding：5px;}。
Semantic best practices also imply not using <br> tag. Better define top or bottom margins to put some space between elements. (I must admit that's probably the only example where I value ease over semantic and sometimes use it myself though)
语义最佳实践也意味着不使用
标签。更好地定义顶部或底部边距以在元素之间放置一些空间。（我必须承认，这可能是我重视语义的唯一例子，有时我自己也会使用它）
<b> tag should be use only in very specific cases, cfr this article. In this specific case you can achiever the same effect (bold text) by using font-weight: bold on the desired cells, either by giving them a specific CSS class, either by targetting them with a CSS3 selector like for example : tr td:nth-child(3) {font-weight: bold;}}
标签应仅在非常具体的情况下使用，请参阅本文。在这种特定情况下，你可以通过在所需的单元格上使用font-weight：bold来实现相同的效果（粗体文本），或者通过给它们一个特定的CSS类，或者通过使用CSS3选择器来定位它们，例如：tr td： nth-child（3）{font-weight：bold;}}
similarily, don't use align attribute, same thing, target the desired cell and use CSS property text-align: right; instead.
同样地，不要使用align属性，同样的事情，定位所需的单元格并使用CSS属性text-align：right;代替。

#1