Length: 42 character(s); Best length: 10 ~ 60 character(s)
pcre, regex, regexp, regular expression, perl, perlre, philip hazel
Length: 67 character(s)
The PCRE library is a set of functions that implement regular expression pattern matching using the same syntax and semantics as Perl 5. PCRE has its own native API as well as a set of wrapper functions that correspond to the POSIX regular expression API.
Length: 255 character(s); Best length: 50 ~ 160 character(s)
HTTP header fields are components of the message header of requests and responses in the Hypertext Transfer Protocol (HTTP). They define the operating parameters of an HTTP transaction. The header fields are not directly displayed by normal web browsers like Internet Explorer, Google Chrome, Firefox etc. Below is the HTTP Header information of www.pcre.org:
HTTP/1.1 200 OK
Date: Thu, 22 Jun 2017 13:57:41 GMT
Content-Type: text/html; charset=utf-8
Last-Modified: Tue, 14 Feb 2017 19:16:04 GMT
www.pcre.org - DNS Record Analysis
Domain Name Systes (DNS) translates easily memorized domain names to the numerical IP addresses needed for the purpose of locating computer services and devices worldwide. There are total 8 DNS record(s) of pcre.org.