Proper way to access a static variable inside a string with a heredoc syntax?

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Lets say I have a static variable called $_staticVar in my class which I am trying to access like this. The variable has a member aString which has the string v

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轻奢々

2021-01-06 13:06

You can do show at this sample class to show how to access/call a static method or attribute from inside a string.

You must store the classname inside a variable, so you can access classelements over this variable and yes you can access static variables and static methods.

<?php

class test {
    private $static = 'test';
    // static Method
    static function author() {
        return "Frank Glück";
    }
    // static variable
    static $url = 'http://www.dozent.net';
    public function dothis() {
       $self = __CLASS__;
       echo <<<TEST
           {${$this->self}}::author()}} // don't works
           {${!${''}=static::author()}} // works
           {$self::author()} // works
TEST;
    }
}

$test = 'test'; // this is the trick, put the Classname into a variable

echo "{$test::author()} {$$test::$url}";
echo <<<HTML
<div>{$test::author()}</div>
<div>{$$test::$url}</div>
HTML;

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轻奢々

2021-01-06 13:25
I'm fairly certain you must use a local or imported variable for string interpolation. The easiest solution? Why, make it local of course:
```
 $_staticVar = self::$_staticVar; // or did you mean self::_staticVar? Not too clear on that.

 echo <<<eos

 Something {$_staticVar->something} more of something 

eos;
```
As for the reasons your examples didn't work:
```
 echo <<<eos

 Something self::$_staticVar->{$something} more of something 

eos;
```
Interpolates undefined variables $something and $_staticVar, which results in an empty string and a notice.
```
 echo <<<eos

 Something {${self::$$_staticVar->{$something}}} more of something 

eos;
```
Interpolates the value of something that definitely doesn't exist and never will and it's all really confusing but you know it doesn't work.
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