Description:
------------
In addition to bug 48768, which is a parse_ini_file() crasher when INI_SCANNER_RAW mode is used, there's also an issue with configuration items containing equal signs in general which results in a (seemingly) spurious warning.

Given that INI_SCANNER_RAW is new and only minimally documented, this may in fact be intended behaviour, in which case this should probably be changed to a documentation problem. It would seem odd that changing the scanner mode would prevent properly double-quoted configuration values from being parsed, though.

Reproduce code:
---------------
INI file:

equal = "foo=bar"


PHP script:

$ini = parse_ini_file('equals.ini', false, INI_SCANNER_NORMAL);
var_dump($ini);

$ini = parse_ini_file('equals.ini', false, INI_SCANNER_RAW);
var_dump($ini);


Expected result:
----------------
array(1) {
  ["equal"]=>
  string(7) "foo=bar"
}
array(1) {
  ["equal"]=>
  string(7) "foo=bar"
}


Actual result:
--------------
array(1) {
  ["equal"]=>
  string(7) "foo=bar"
}

Warning: syntax error, unexpected '"' in equals.ini on line 1
 in /tmp/equals.php on line 5

Call Stack:
    0.0007     324132   1. {main}() /tmp/equals.php:0
    0.0012     324544   2. parse_ini_file() /tmp/equals.php:5