msphpsql: sqlsrv extension modifies the locale settings and possibly breaks other software

+## PHP Driver version or file name ExtensionVer => 5.6.1 +## SQL Server version not relevant +## Client operating system Debian 10 +## PHP version 7.1.33 +## Microsoft ODBC Driver version not relevant +## Table schema not relevant +## Problem description The PHP Extension seems to override the LC_ options. This triggered a Problem in Magento 1 Shops. All prices were printed way to high. But this is not a fault of magento. I dont think a PHP extension should modify the locale settings at all.

Testing the output of localeconv with sqlsrv enabled:

/opt/php-7.1/bin/php  -r "print_r(localeconv());"
Array
(
    [decimal_point] => ,
    [thousands_sep] => .
    [int_curr_symbol] => EUR
    [currency_symbol] => €
    [mon_decimal_point] => ,
    [mon_thousands_sep] => .
    [positive_sign] =>
    [negative_sign] => -
    [int_frac_digits] => 2
    [frac_digits] => 2
    [p_cs_precedes] => 0
    [p_sep_by_space] => 1
    [n_cs_precedes] => 0
    [n_sep_by_space] => 1
    [p_sign_posn] => 1
    [n_sign_posn] => 1
    [grouping] => Array
        (
            [0] => 3
            [1] => 3
        )

    [mon_grouping] => Array
        (
            [0] => 3
            [1] => 3
        )

)

Testing the output of localeconv with sqlsrv disabled :

/opt/php-7.1/bin/php  -r "print_r(localeconv());"
Array
(
    [decimal_point] => .
    [thousands_sep] =>
    [int_curr_symbol] =>
    [currency_symbol] =>
    [mon_decimal_point] =>
    [mon_thousands_sep] =>
    [positive_sign] =>
    [negative_sign] =>
    [int_frac_digits] => 127
    [frac_digits] => 127
    [p_cs_precedes] => 127
    [p_sep_by_space] => 127
    [n_cs_precedes] => 127
    [n_sep_by_space] => 127
    [p_sign_posn] => 127
    [n_sign_posn] => 127
    [grouping] => Array
        (
        )

    [mon_grouping] => Array
        (
        )

)

+## Expected behavior and actual behavior

• The extension should not modify locale config