This is my $var from json_encode:
{
"key1":"\u0000data1",
"key2":"\u0000data2",
"key3":"\u0000data3",
"key4":"\u0000data4
}
I would like to do this:
echo json_encode(str_replace ("\\u0000", "", $var));
in order to get rid of the preceding \u0000 that's showing up, the line above doesn't work to strip it.
You'll have to apply the function the other way round:
echo str_replace('\\u0000', '', json_encode($var));
This is because $var is an array. You'd have to iterate over all its entries and look for the \0 byte otherwise.
I ran into something similar.
This question & answer helped me understand the route cause of the problem.
I overcame this by realising that my class properties (equivalent to each keyn in your question) didn't really need to be protected. By making them public I side-stepped the issue altogether.
I suppose it's up to you to decide if this is best practice or suited to your project however.