When I'm using XDebug and when the setting 'html_errors' is set to On, var_dump() function don't display as expected the keys of array which contain the \0 character.

Reproduce code:

<?php
$var = "te\0st";
$arr = array($var=>$var);
ini_set('html_errors', '1');
var_dump($arr);
?>

Expected result:

array
'te?st' => string 'te�st' (length=5)

Actual result:

array
'te' => string 'te�st' (length=5)