/* * 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; } } } } }
https://synapse.koreamed.org/Synapse/Data/PDFData/0140AD/ad-29-706.pdf
“The histamine level in food has changed according to the cooking method used to prepare it. Frying and grilling increased histamine level in foods, whereas boiling had little influence or even decreased it. The boiling method might be helpful to control the effect of histamine in histamine-sensitive or susceptible patients, compared with frying and grilling.”
Maybe the discussion section is worth a read for insights on mechanisms.