debug_backtrace() returns information only about last call #15

Aer Information

Aer Version (or commit ref): 4c81475afb
Operating System: Linux
System Architecture (eg. arm, x86_64, ...): x86_64

Your problem description

debug_backtrace() does not return information all information as in PHP. See example code:

function test() {
    var_dump(debug_backtrace());
}
function a() {
    test();
}
a();

Expected result (from PHP):

array(2) {
[0] =>
array(4) {
'file' =>
string(8) "test.php"
'line' =>
int(8)
'function' =>
string(4) "test"
'args' =>
array(0) {
}
}
[1] =>
array(4) {
'file' =>
string(8) "test.php"
'line' =>
int(11)
'function' =>
string(1) "a"
'args' =>
array(0) {
}
}
}

Current results

array(4) {
 [function] =>
  string(4 'test')
 [args] =>
  array(0) {
   }
 [line] =>
  int(7)
 [file] =>
  string(8 'test.php')
 }

It is possible to retrieve all functions test and a but the VM holds only a bytecode sequence at a time, the last used, thus it will returns 11 in this case for both.