Question

我参考了PHP手册，但由于早期关闭php标签，我得到了语法错误 - 显然我是一个新的PHP，但我只是试图将xml指定为php字符串。问题是什么？

<?php
$xmlstr = <<<XML //Need a clarification on '<<<XML' if possible 
<?xml version='1.0' standalone='yes'?> //This is closing my php script and causing error
<details>
<detail>
    <user>mcgraw</user>
    <dateA>09/11/1973</dateA>
    <inTime>9:00am</inTime>
    <outTime>6:00pm</outTime>
    <hours>9</hours>
    <notes>Monday</notes>
</detail>
<detail>
    <user>simpson</user>
    <dateA>08/23/1983</dateA>
    <inTime>9:00am</inTime>
    <outTime>5:30pm</outTime>
    <hours>8.5</hours>
    <notes>Thursday</notes>
</detail>
</details>
XML;
?>

Answer 1

这就是所谓的PHP的Heredoc语法。它可以帮助您标记字符串，而无需担心引号。

一个更简单的例子是：

$string = <<<STR_END_DELIMITER
This is some string, I can use ' and " freely, and it wouldn't break the string.
I can also use $variables inside, and they'll evaluate.
When I'm done with the string, I'll need to type STR_END_DELIMITER; on a fresh line, without anything else (not even spaces!)
STR_END_DELIMITER;
do_stuff_with_string($string);

有关详细信息，请参阅 PHP Manual Entry on Strings 。

PHP SimpleXML用法的语法说明

1 个答案: