Heredoc在PHP中不起作用
[英]Heredoc Not Working in PHP
问题描述
I am learning to build web applications with PHP. 
我正在学习使用PHP构建Web应用程序。 However, I keep having issues using heredocs to stick some HTML into the page from within PHP. 但是，在使用heredocs将一些HTML从PHP粘贴到页面中时，我一直遇到问题。 Basically, I wanna do something like 基本上，我想做类似的事情
echo $htmlPage;
after PHP does some data processing and stuff. PHP完成一些数据处理和工作之后。 But, as the title suggests, its not working for some reason. 但是，正如标题所示，由于某种原因，它不起作用。 And I have reason to believe it has something to do with how I made the heredoc, which can be seen below. 而且我有理由相信，这与我制作Heredoc的方式有关，如下所示。
Thanks 谢谢
$htmlPage = <<<HTML
<style>
.signup
{
border: 1px solid #999999;
font: normal 14px helvatica;
color: #444444;
}
</style>
<script src="form_validation.js">
</script>
</head>
<body>
<table border="0" cellpadding="2" cellspacing="5" bgcolor="#eeeeee">
<th cellspan="2" align="center">Sign Up Form</th>
<form method="post" action="addUser.php" onsubmit="return validate(this)">
<tr>
<td>Forename</td>
<td><input type = "text" maxlength="32" name="forename"/></td>
</tr>
<tr>
<td>Surname</td>
<td><input type = "text" maxlength="32" name="surname" /></td>
</tr>
<tr>
<td>Username</td>
<td><input type = "text" maxlength="16" name="username" /></td>
</tr>
<tr>
<td>Password</td>
<td><input type = "password" maxlength="12" name="password" /></td>
</tr>
<tr>
<td>Age</td>
<td><input type = "text" maxlength="3" name="age" /></td>
</tr>
<tr>
<td>E-mail</td>
<td><input type = "text" maxlength="32" name="email" /></td>
</tr>
<tr>
<td colspace="2" align="center">
<td><input type = "submit" value="Sign Up"/></td>
</tr>
</form>
</table>
</body>
</html>
HTML;
1 个解决方案
解决方案1
2 2017-01-30 12:54:07
You have a trailing space and no new line after the closing delimiter per the manual both are required. 根据手册，在结束定界符后您必须有一个尾随空格并且没有新行。
It is very important to note that the line with the closing identifier must contain no other characters, except a semicolon (;).
- http://php.net/manual/en/language.types.string.php#language.types.string.syntax.heredoc -http://php.net/manual/zh-CN/language.types.string.php#language.types.string.syntax.heredoc
Error reporting should have thrown an unexpected end of file . 错误报告应该抛出了unexpected end of file 。 Here's a functional example: 这是一个功能示例：
$htmlPage = <<<HTML
<style>
.signup
{
border: 1px solid #999999;
font: normal 14px helvatica;
color: #444444;
}
</style>
<script src="form_validation.js">
</script>
</head>
<body>
<table border="0" cellpadding="2" cellspacing="5" bgcolor="#eeeeee">
<th cellspan="2" align="center">Sign Up Form</th>
<form method="post" action="addUser.php" onsubmit="return validate(this)">
<tr>
<td>Forename</td>
<td><input type = "text" maxlength="32" name="forename"/></td>
</tr>
<tr>
<td>Surname</td>
<td><input type = "text" maxlength="32" name="surname" /></td>
</tr>
<tr>
<td>Username</td>
<td><input type = "text" maxlength="16" name="username" /></td>
</tr>
<tr>
<td>Password</td>
<td><input type = "password" maxlength="12" name="password" /></td>
</tr>
<tr>
<td>Age</td>
<td><input type = "text" maxlength="3" name="age" /></td>
</tr>
<tr>
<td>E-mail</td>
<td><input type = "text" maxlength="32" name="email" /></td>
</tr>
<tr>
<td colspace="2" align="center">
<td><input type = "submit" value="Sign Up"/></td>
</tr>
</form>
</table>
</body>
</html>
HTML;
echo $htmlPage;
Demo: https://3v4l.org/bEI2B 演示： https ： //3v4l.org/bEI2B
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