Resource interpreted as Stylesheet but transferred with MIME type text/html with css generated in PHP -

i have site css not interpreted. i've seen other answers not 1 dinamically generated css. i'm generating css in php adding

<link media="all" type="text/css" href="http://tylldalil.wconsult.no/?ai1ec_render_css=1367403986&ver=3.5.1" id="ai1ec_stytle-css" rel="stylesheet"> 

my function in php

public function render_css() {      header( 'content-type: text/css' );     // aggressive caching save future requests same client.     $etag = '"' . md5( __file__ . $_get[self::get_varibale_name] ) . '"';     header( 'etag: ' . $etag );     $max_age = 31536000;     header(         'expires: ' .         gmdate(             'd, d m y h:i:s',             ai1ec_time_utility::current_time() + $max_age         ) .         ' gmt'     );     header( 'cache-control: public, max-age=' . $max_age );     if (         empty( $_server['http_if_none_match'] ) ||         $etag !== stripslashes( $_server['http_if_none_match'] )     ) {         // compress data if possible         if ( extension_loaded( 'zlib' ) ) {             // ob_start( 'ob_gzhandler' );         }         $content = $this->get_compiled_css();         echo $content;         ob_end_flush();     } else {         // not modified!         status_header( 304 );     }     // we're done!     exit( 0 ); } 

this htaccess

rewriteengine on rewritecond %{http_host} ^(www.)?tlldalil.wconsult.no$ rewriterule ^(/)?$ ?page_id=23 [r=301,l]  order deny,allow deny allow 88.89.104.103  allow 93.50.99.14    ###start kloxo php config area ###please don't edit these comments or content in between. kloxo uses recognize lines writes the file. if above line corrupted, may fail recognize them, leading multiple lines.  <ifmodule mod_php4.c>     php_value error_log "/home/klausen/__processed_stats/tylldalil.wconsult.no.phplog"     php_value upload_max_filesize 64m     php_value max_execution_time  60     php_value max_input_time  120     php_value memory_limit  64m     php_value post_max_size  64m     php_flag register_globals  off     php_flag display_errors  off     php_flag file_uploads  on     php_flag log_errors  off     php_flag output_buffering  off     php_flag register_argc_argv  on     php_flag magic_quotes_gpc   off     php_flag magic_quotes_runtime  off     php_flag magic_quotes_sybase  off     php_flag mysql.allow_persistent  off     php_flag register_long_arrays  on     php_flag allow_url_fopen  on     php_flag cgi.force_redirect  on     php_flag enable_dl  on </ifmodule>  <ifmodule mod_php5.c>     php_value error_log "/home/klausen/__processed_stats/tylldalil.wconsult.no.phplog"     php_value upload_max_filesize 64m     php_value max_execution_time  60     php_value max_input_time  120     php_value memory_limit  64m     php_value post_max_size  64m     php_flag register_globals  off     php_flag display_errors  off     php_flag file_uploads  on     php_flag log_errors  off     php_flag output_buffering  off     php_flag register_argc_argv  on     php_flag magic_quotes_gpc   off     php_flag magic_quotes_runtime  off     php_flag magic_quotes_sybase  off     php_flag mysql.allow_persistent  off     php_flag register_long_arrays  on     php_flag allow_url_fopen  on     php_flag cgi.force_redirect  on     php_flag enable_dl  on </ifmodule>  ###end kloxo php config area     # begin wordpress  # end wordpress 

what should add htaccess?

when try view css, "apache 2 test page powered centos" html page instead. page response headers declare "403 forbidden".

could connected aggressive caching?

what happens if, in php, amend line:

$etag = '"' . md5( __file__ . $_get[self::get_varibale_name] ) . '"'; 

to

$etag = '"' . md5( __file__ . $_get[self::get_variable_name] ) . '"'; 

?