Error 500?

[Dark_Mike]

Hola alguien me podria ayudar? Me pasa el mismo error. Uso DirectAdmin.
Esto es el registro de error de apache:

.88] /home/xxxxx/domains/xxxxxxx/public_html/.htaccess: Invalid command 'php_value', perhaps misspelled or defined by a module not included in the server configuration


Este es el .htaccess:

Options FollowSymLinks

ErrorDocument 401 /parsing/messages.php?m=401
ErrorDocument 403 /parsing/messages.php?m=403
ErrorDocument 404 /parsing/messages.php?m=404
ErrorDocument 500 /parsing/messages.php?m=500

RewriteEngine On
RewriteRule ^admin/style.css$ admin/style.php [L]
RewriteRule ^templates/([a-zA-Z]+)/style.css$ templates/$1/style.php [L]
RewriteRule ^boards/([a-zA-Z]+)/$ boards/model_index.php?b=$1 [L]
RewriteRule ^boards/([a-zA-Z]+)$ boards/model_index.php?b=$1 [L]
RewriteRule ^boards/([a-zA-Z]+)/archive.htm$ boards/model_index.php?a=1&b=$1 [L]
RewriteRule ^boards/([a-zA-Z]+)/index.php$ boards/model_index.php?b=$1 [L]
RewriteRule ^boards/([a-zA-Z]+)/([0-9]+)$ boards/model_index.php?b=$1&p=$2 [L]
RewriteRule ^boards/([a-zA-Z]+)/([0-9]+)/$ boards/model_index.php?b=$1&p=$2 [L]
RewriteRule ^boards/([a-zA-Z]+)/thread/([0-9]+)$ boards/model_thread.php?b=$1&t=$2 [L]
RewriteRule ^boards/([a-zA-Z]+)/thread/([0-9]+)/$ boards/model_thread.php?b=$1&t=$2 [L]
RewriteRule ^boards/([a-zA-Z]+)/archived/([0-9]+)$ boards/model_thread.php?at=1&b=$1&t=$2 [L]
RewriteRule ^boards/([a-zA-Z]+)/archived/([0-9]+)/$ boards/model_thread.php?at=1&b=$1&t=$2 [L]
RewriteRule ^boards/([a-zA-Z]+)/photos.htm$ parsing/list_images.php?b=$1 [L]
RewriteRule ^boards/([a-zA-Z]+)/thumb/$ - [F]
RewriteRule ^boards/([a-zA-Z]+)/upload/$ - [F]
RewriteRule ^boards/([a-zA-Z]+)/thumb$ - [F]
RewriteRule ^boards/([a-zA-Z]+)/upload$ - [F]

php_value upload_max_filesize 100M
php_value post_max_size 100M
php_value max_execution_time 1000
php_value max_input_time 1000
php_value memory_limit 500M


**** Borre los valores de php_value y ya funciona pero no se si afecte a la pagina web, es un imgboard. Aguna sugerencia? gracias.