php heredoc语法问题

Question

尝试输出以下5个代码，但不确定如何操作。有什么想法吗？

<?php

$other='What are you like?';
 $content['my_name']=4;

$str=<<<JT
    here is some info. $other Do 
    you like the number {$content['my_name']+1} ? 
JT;

 echo $str . '<br />';

Answer 1

正如Pekka所说的那样：

$str=<<<JT
    here is some info. $other Do 
    you like the number {$content['my_name']+1} ? 
JT;

是无效的-在heredoc文档中只解析变量。

$content['my_name'] += 1;
$str=<<<JT
    here is some info. $other Do 
    you like the number {$content['my_name']} ? 
JT;