Invalid opcode 153/1/8 when using anonymous function

Question

My host suddenly changed something , and now my sites ( most wp - around 100 ) are getting the infamous error Invalid opcode 153/1/8

The line(s) responsible for it :

$f = function() use ($out) {
    echo $out;
};

After 2 minutes of research it appears that the culprit is eAccelerator , which does not support anonymous functions

Both the following questions blamed the error on eAccelerator as well :

Invalide OpCode and php sort function,

https://stackoverflow.com/a/12085901/1244126

Fun fact : the same code was already before a subject of my own 2 questions here on SE and here , where I encountered a problem while using anonymous functions with older PHP versions ( < 5.3 ) with create_function

$f = create_function(' $out ',' global $out; echo $out;');

So, my question is : how can I change my code in a manner that will avoid the eAccelerator bug AND will work on all php versions . ( it is unlikely that I can convince my host to change something on it´s side )

EDIT I :

For sake of clarity ( although might be slightly irrelevant - the the question is how to have a cross-compatible anonymous functions ) - I am posting the whole relevant code ...

    if ( count( $content_widget ) > 0 ) { // avoid error when no widget...
    $i=0;
    foreach ( $content_widget as $wid ){
        $out = null;
        $i++;

        $widg_id = 'o99_dashboard_widget_dyn_' . $i;
        $widg_name = 'widget name  - ' . $i;

        $out = $wid;

        // $f = create_function('$out','global $out;echo $out;'); 
        // $f = create_function('', 'global $out; echo $out ;'); 
        $f = function() use ($out) { 
            echo $out;
        };

        // function() use ($out) // NOPE
        // $f = $f($out); // NOPE again
        wp_add_dashboard_widget($widg_id, $widg_name, $f);
        // $i++;
     }

}

It is just a simple code to dynamically create dashboard widgets in wp admin area..

Answer 1

It seems that they are using call_user_func

So, you could create new object and pass callable array.

class s {
    private $_out = null;
    public function __construct($out){
        $this->_out = $out;
    }
    public function a(){
        echo $this->_out;
    }
}

$function = array(new S('my out'), 'a');

var_dump(is_callable($function));

call_user_func($function);