Question

我已经编写了一个PHP代码，使用mpdf API将html内容转换为pdf，现在我想要包含一个php if条件到那个html内容我该怎么做？这是我的代码：

$cart_body='<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>New Order Placed</title>
</head>
<body>
<table width="550" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="400" align="left" valign="top">
<a style="font-size:16px">' if(somecondition){ echo "somecontent"; }
else{
echo "somecontent";
}'</a><br />
</body>
</html>';

Answer 1

您可以使用.运算符进行连接，请参阅下面的示例：

$cart_body='<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>New Order Placed</title>
</head>
<body>
<table width="550" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="400" align="left" valign="top">
<a style="font-size:16px">';
if(somecondition){ $cart_body .= "somecontent"; }
else{
$cart_body .= "somecontent";
}

$cart_body .= '</a><br />
</body>
</html>';

Answer 2

如果您有充分的理由将所有HTML存储在变量中，可以通过以下方式有条件地更改它：

$cart_body='<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>New Order Placed</title>
</head>
<body>
<table width="550" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="400" align="left" valign="top">
<a style="font-size:16px">'.
(somecondition?"somecontent":"othercontent")
.'</a><br />
</body>
</html>';

但是，它并不漂亮。

Answer 3

您可以像这样使用

<a style="font-size:16px">';
if(somecondition){ $cart_body .= "somecontent"; }
else{
$cart_body .= "somecontent";
}

$cart_body .= '</a><br />
</body>
</html>';

Answer 4

我建议使用sprintf()方法格式化/渲染模板。像这样，您可以在模板中放置多个占位符，然后以更易读的方式训练逻辑，然后在最后将值注入占位符：）

<?php
// preparing the template
$cart_body = <<<EOF
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
        <title>New Order Placed</title>
    </head>
    <body>
        <table width="550" border="0" cellspacing="0" cellpadding="0">
            <tr>
                <td width="400" align="left" valign="top">
                    <a style="font-size:16px">%s</a><br/>
                </td>
            </tr>
        </table>
    </body>
</html>
EOF;

// working out the logic
$basedOnThisCondition = true;
$whatYouWantToInject = ($basedOnThisCondition) ? 'Was true' : 'Was false' ;

// Injecting value to the placeholder (%s for string)
$rendered_cart_body = sprintf($cart_body, $whatYouWantToInject);

// And here is to test the result 
print_r($rendered_cart_body);

P.S。

你的html模板中有一些我在上面的例子中修复过的关闭器：）

如何在html中包含php条件

4 个答案: