note BrowserUk <blockquote><i>Why there is a need to Convert the unique filename to a unique number? How is this gonna help?</i></blockquote> <p>Why are you asking me the same question as I asked you? <blockquote><i>The hash is a mathematical algorithm of producing a string based on a contents file </i></blockquote> <p>I showed the hash operating on the file path, not its content. <blockquote><i> the .html file can be: 1. renamed 2. moved 3. contents altered </i></blockquote> <p>Thus, you want to be able to consider two files with different names, different locations and different contents as "the same file". <p>Without you arranging to place some piece of information within those files that can be searched for, to uniquely identify them; those criteria mean that <b>any two files could be considered the same</b>, which is a nonsense; which is why I ignored the possibility that you actually meant that; and assumed your description was lacking precision. <p>However, inserting a piece of information -- say a custom html-like tag or html comment -- into each html file -- regardless of whether the are 100's 1000's or 100s of 1000s would be the works of a few minutes. At least it would be for Perl. <div class="pmsig"><div class="pmsig-171588"> <hr /> <font size=1 > <div>With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'</div> <div>Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.</div> <div>"Science is about questioning the status quo. Questioning authority". </div> <div>In the absence of evidence, opinion is indistinguishable from prejudice. </div> </font> </div></div> 1014433 1014461