Due to a bug in PHP <= 7.3, overriding the __debugInfo() method from SPL classes is silently ignored.
<?php
class Debuggable extends ArrayObject {
public function __debugInfo() {
return ['special' => 'This should show up'];
}
}
var_dump(new Debuggable());
// Expected output:
// object(Debuggable)#1 (1) {
// ["special"]=>
// string(19) "This should show up"
// }
// Actual output:
// object(Debuggable)#1 (1) {
// ["storage":"ArrayObject":private]=>
// array(0) {
// }
// }
?>
Bug report: https://bugs.php.net/bug.php?id=69264