/* * Patch for filter_var() */ if(!function_exists('filter_var')){ define('FILTER_VALIDATE_IP', 'ip'); define('FILTER_FLAG_IPV4', 'ipv4'); define('FILTER_FLAG_IPV6', 'ipv6'); define('FILTER_VALIDATE_EMAIL', 'email'); define('FILTER_FLAG_EMAIL_UNICODE', 'unicode'); function filter_var($variable, $filter, $option = false){ if($filter == 'ip'){ if($option == 'ipv4'){ if(preg_match("/(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})/", $variable, $matches)){ $variable = $matches[1]; return $variable; } } if($option == 'ipv6'){ if(preg_match("/\s*(([:.]{0,7}[0-9a-fA-F]{0,4}){1,8})\s*/", $variable, $matches)){ $variable = $matches[1]; return $variable; } } } if($filter == 'email'){ if($option == 'unicode' || $option == false){ if(preg_match("/\s*(\S*@\S*\.\S*)\s*/", $variable, $matches)){ $variable = $matches[1]; return $variable; } } } } }
Quote from the British Medical Journal (2002):3
“Lowering sodium intake may have adverse effects on vascular endothelium through stimulation of the renin-angiotensin system and on serum total and low density lipoprotein cholesterol concentrations. In cohort studies, lower salt intake in people with hypertension has been associated with higher levels of cardiovascular disease and in general populations with greater all cause mortality.”
Quote about the NHANES III study from the Journal of General Internal Medicine (2008)4
“Observed associations of lower sodium with higher mortality were modest and mostly not statistically significant. However, these findings also suggest that for the general US adult population, higher sodium is unlikely to be independently associated with higher CVD or all-cause mortality.”