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PHP Exportable Class
<?php
/*
* @author Christian Mayer <http://fox21.at>
* @link http://stackoverflow.com/q/21762276/823644
* @link https://eval.in/163041
* @link https://eval.in/163462
* @link https://eval.in/163909
* @link https://gist.github.com/TheFox/49ff6903da287c30e72f
*/
interface Exportable{
public function __get_state();
}
function unset_with_get_state($expression){
$before = clone $expression;
$classVars = array_keys(get_class_vars(get_class($before)));
foreach(array_diff($classVars, $before->__get_state()) as $var){
unset($before->$var);
}
return $before;
}
function my_var_export($expression, $return = null){
$before = $expression;
if($before instanceof Exportable){
$before = unset_with_get_state($expression);
}
return var_export($before, $return);
}
class Foo implements Exportable{
public $name = null;
public $foo = null;
public $bar = null;
public function __get_state(){
// Only show 'name' and 'bar' on my_var_export().
return array('name', 'bar');
}
}
$a = 'hello';
my_var_export($a);
print "\n";
$b = new Foo();
$b->name = 'world';
$b->foo = 'foo is foo';
$b->bar = 'bar is bar';
my_var_export($b);
print "\n";
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