Message d'erreur lors de la 1ere connexion

Strange error :

PHP Warning: PHP Startup: in Unknown on line 0

It seems to be a wampserver error.
Found on the net :
stackoverflow.com/questions/11967563/php...in-unknown-on-line-0
forum.wampserver.com/read.php?2,128734

Click on the Apache version that you use in the WAMPServer menu, e.g.

wampmanager -> Apache -> Version -> 2.4.9 ( just click on the version number on this menu item )

this will rebuild the SYMLINKS for the extensions that are causing the "in Unknown on line 0" error.

It is a wampserver error.
Most likely because of incorrect dll.
The way to find the wrong one is to comment all dll references in php.ini.
Then restart PHP and check that error has disepeared.
Then uncomment dll one by one (or five by five), restart PHP and check if error reappears.
As you get group or 4 errors, I would bet you have 2 incorrect DLLs.

You can check directly php_intl.dll and php_ldap.dll as they often come to be the incorrect ones.

Or you can also try another PHP stack : XAMPP, EasyPHP, ...