Moving Wordpress site from Linux to Windows throws errors - php

Question

I've been asked to move someone's blog from a Linux server to a Windows 2008 box. I used Xampp on the new box. When I try to access the blog I get the following errors:
Deprecated: Assigning the return value of new by reference is deprecated in C:\xampp\htdocs\newblogBlog\httpdocs\wp-settings.php on line 472
Deprecated: Assigning the return value of new by reference is deprecated in C:\xampp\htdocs\newblogBlog\httpdocs\wp-settings.php on line 487
Deprecated: Assigning the return value of new by reference is deprecated in C:\xampp\htdocs\newblogBlog\httpdocs\wp-settings.php on line 494
Deprecated: Assigning the return value of new by reference is deprecated in C:\xampp\htdocs\newblogBlog\httpdocs\wp-settings.php on line 530
Strict Standards: Declaration of Walker_Page::start_lvl() should be compatible with Walker::start_lvl(&$output) in C:\xampp\htdocs\newblogBlog\httpdocs\wp-includes\classes.php on line 594
Strict Standards: Declaration of Walker_Page::end_lvl() should be compatible with Walker::end_lvl(&$output) in C:\xampp\htdocs\newblogBlog\httpdocs\wp-includes\classes.php on line 594
Strict Standards: Declaration of Walker_Page::start_el() should be compatible with Walker::start_el(&$output) in C:\xampp\htdocs\newblogBlog\httpdocs\wp-includes\classes.php on line 594
Strict Standards: Declaration of Walker_Page::end_el() should be compatible with Walker::end_el(&$output) in C:\xampp\htdocs\newblogBlog\httpdocs\wp-includes\classes.php on line 594
Strict Standards: Declaration of Walker_PageDropdown::start_el() should be compatible with Walker::start_el(&$output) in C:\xampp\htdocs\newblogBlog\httpdocs\wp-includes\classes.php on line 611
Strict Standards: Declaration of Walker_Category::start_lvl() should be compatible with Walker::start_lvl(&$output) in C:\xampp\htdocs\newblogBlog\httpdocs\wp-includes\classes.php on line 705
Strict Standards: Declaration of Walker_Category::end_lvl() should be compatible with Walker::end_lvl(&$output) in C:\xampp\htdocs\newblogBlog\httpdocs\wp-includes\classes.php on line 705
Strict Standards: Declaration of Walker_Category::start_el() should be compatible with Walker::start_el(&$output) in C:\xampp\htdocs\newblogBlog\httpdocs\wp-includes\classes.php on line 705
Strict Standards: Declaration of Walker_Category::end_el() should be compatible with Walker::end_el(&$output) in C:\xampp\htdocs\newblogBlog\httpdocs\wp-includes\classes.php on line 705
Strict Standards: Declaration of Walker_CategoryDropdown::start_el() should be compatible with Walker::start_el(&$output) in C:\xampp\htdocs\newblogBlog\httpdocs\wp-includes\classes.php on line 728
Strict Standards: Redefining already defined constructor for class wpdb in C:\xampp\htdocs\newblogBlog\httpdocs\wp-includes\wp-db.php on line 306
Deprecated: Assigning the return value of new by reference is deprecated in C:\xampp\htdocs\newblogBlog\httpdocs\wp-includes\cache.php on line 103
Strict Standards: Redefining already defined constructor for class WP_Object_Cache in C:\xampp\htdocs\newblogBlog\httpdocs\wp-includes\cache.php on line 425
Deprecated: Assigning the return value of new by reference is deprecated in C:\xampp\htdocs\newblogBlog\httpdocs\wp-includes\query.php on line 21
Deprecated: Assigning the return value of new by reference is deprecated in C:\xampp\htdocs\newblogBlog\httpdocs\wp-includes\theme.php on line 623
Strict Standards: Redefining already defined constructor for class WP_Dependencies in C:\xampp\htdocs\newblogBlog\httpdocs\wp-includes\class.wp-dependencies.php on line 15
Warning: Creating default object from empty value in C:\xampp\htdocs\newblogBlog\httpdocs\wp-includes\update.php on line 39
Warning: Cannot modify header information - headers already sent by (output started at C:\xampp\htdocs\newblogBlog\httpdocs\wp-includes\class.wp-dependencies.php:15) in C:\xampp\htdocs\newblogBlog\httpdocs\wp-includes\pluggable.php on line 770
Any ideas?

Answer 1

I think your php.ini in your linux server was desactivating errors reporting.
For the strict standards you can hide them by removing E_STRICT from the option error_reporting in you php.ini file (but it may be better to fix them).
for the rest of the issues I do recommand you to fix them, especialy the warnings.
Also check that the PHP version in linux is the same as in windows, migrating from a version to another may result in issues like this.

Answer 2

check the used php-version on the server and on the xammp-box. You can do this with creating a single file that contains the single line
<?php phpinfo(); ?>
This gives you the used versions. If you can use the same versions on old and new system you can get less warnings, perhaps...
And if there are still the warnings, you can filter them out with the right entries in the php.ini.

Answer 3

it is recommended for a productive system to not display errors, someone could use the information to hack your system... you can change the detail level of displaying errors as mentioned by Yazmat, or turn off the displaying of errors in php.ini like this:
display_errors = 0