从变量创建类并使用它扩展另一个类？

Question

I'm using a plugin in wordpress which requires each shortcode I define to be used to extend a function. I've set up my code in a way which means it's going to be difficult to go back and extend all the classes. For example, the plugin expects this:

class WPBakeryShortCode_myCode extends WPBakeryShortCodesContainer {}

I want to replace 'myCode' with a variable, because I have all the possible codes stored in an array. so I want to have

class WPBakeryShortCode_$customCode extends WPBakeryShortCodesContainer {}

ie using a variable to define a class which then extends another class. Every way I've tried this I've gotten an error. Any ideas how I can do this?

Answer 1

You cant instantiate one at runtime from a variable.

There's no recommended way to dynamically do that because the generated class has to be instantiated before the variable is evaluated

Using Eval is bad practice and its not recommended , if you want to know how here is example

akshay@db-3325:/tmp$ cat test.php 
<?php

class A { }
class B { 
     function iamB(){
         print "From B".PHP_EOL;
     }
}

$myvariable = 'B';  


$code =<<<EOF
  class C extends $myvariable { 
    public static function bar(){
      print "not recommended".PHP_EOL; 
    }
  }
EOF;

eval( $code );

C::iamB();
C::bar();

?>

Output

akshay@db-3325:/tmp$ php test.php 
From B
not recommended