Archive for April, 2008

Dedicated web hosting - 929Chapter 47Converting Static HTML Siteswho Knew Too Much

Wednesday, April 23rd, 2008

929Chapter 47Converting Static HTML Siteswho Knew Too Much is a long review in text here.

Reviewer: JP

Further reading

Wisdom and Innocence: a life of GKChesterton (1997) by Joseph Pearce
Bio focussing onChesterton s Catholicism.

Summary information
Main character name:
Horne Fisher
Year published: 1922
Time period: 1910 s
Subgenres: Classicwhodunit, Political
Setting: UK(West Country), Ireland


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Anonymous web server - 928Part VCase StudiesHarvesting dataThe code in the preceding

Tuesday, April 22nd, 2008

928Part VCase StudiesHarvesting dataThe code in the preceding section assumes that you want to transfer data from one databaseto another but what if, instead, you need to dump data from a bunch of static HTML or textfiles into a database? In that case, you have to write yourself a little minispider. Before you try this, you should know that harvesting data from existing documents is aninherently difficult task. If you ve been maintaining 500 static HTML pages for any length oftime, there s very likely to be some irregularities in the files that make it more difficult to pickout the pieces that you want. Sometimes even a simple typo or case change causes problems. Harvesting data this way could still save you some time, however, in certain circumstances. Basically what you want to do is parse text by looking for unique patterns. You hope theinformation you want to harvest is identifiable by such a pattern. The process is very similarto navigating by landmarks, and only human labor can parse the structure of your documentswell enough to pick out the patterns. After a person has clearly picked out a pattern, how- ever, PHP can help you with the repetitive grunt-labor of applying this patterned searching toa whole bunch of documents. Say, for example, that you have several hundred individual HTML press release pages thatyou now want to turn into a database. You analyze the pages and discover that the headlineis always located inside

tags and is the only thing on each page marked by such tags. Inthis case, it would be very easy to pick out the headline from each page. Unfortunately, this isa deliberately easy example in many cases, the actual pattern you need to find is morelikely to be something like look for this string; then it is two paragraphs after that, betweenthe third and fourth linebreaks. Here is a sample snippet of HTML from the old MysteryGuide.com:
REVIEW Rating: 4 (Very good)
C hesterton s Man53
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Free web design - 927Chapter 47Converting Static HTML Sites// First see if

Monday, April 21st, 2008

927Chapter 47Converting Static HTML Sites// First see if this subgenre is already in the database$query = SELECT Sub_id FROM subgenreWHERE Sub_name = $Subgenre[$i] ; $result = mysql_query($query); if (mysql_num_rows($result) == 0) { // If not already there, add the subgenre$query = INSERT INTO subgenre VALUES( NULL, $Subgenre[$i] ) ; $result = mysql_query($query); if (mysql_affected_rows() != 1) { echo Problem inserting subgenre $Subgenre[$i] ; } else { $subgenre_id = mysql_insert_id(); } } else { $subgenre_id = mysql_result($result, 0, 0); } // Now associate the subgenre with the book$query = INSERT INTO book_subgenre VALUES( NULL, $book_id, $subgenre_id) ; $result = mysql_query($query); if (mysql_affected_rows() != 1) { echo Problem inserting book_subgenre data for $B_titleand $Subgenre[$i] ; } } } } ?> Notice that we deal with several problematic but common situations in this script, such as: .Changing strings (M/F) into integers (1/0) for more compact storage. .Turning one field into two fields (Author_nameinto A_firstnameand A_lastname). .Handling duplicate information (same author for multiple books). .Turning three different fields (Subgenre1, Subgenre2, Subgenre3) into three rows inthe same table. .Making a nonrelational database truly relational (book_authorand book_subgenretables).
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926Part VCase StudiesListing 47-2(continued) $author_id = mysql_insert_id(); //Need (Best web design)

Monday, April 21st, 2008

926Part VCase StudiesListing 47-2(continued) $author_id = mysql_insert_id(); //Need this for book_author} } else { $author_id = mysql_result($result, 0, 0); } // Book data// We can assume each book is unique$query = INSERT INTO book VALUES( NULL, $B_title , $B_year , $B_rating, $B_action, $B_humor, $B_romance, $B_sex, $B_violence, $B_reviewer , $B_pages, $B_reviewdate , $B_ISBN , $B_movie , $B_awards , $B_review , $B_blurb ) ; $result = mysql_query($query); $book_id = mysql_insert_id(); //Need this for book_authorif (!$book_id || $book_id == ) { echo Problem inserting book data for $B_title ; } // Associate book and author$query = INSERT INTO book_author VALUES( NULL, $book_id, $author_id) ; $result = mysql_query($query); if (mysql_affected_rows() != 1) { echo Problem inserting book_author data for $B_title ; } // Subgenresfor ($i = 1; $i <= 3; $i++) { if ($Subgenre[$i] == ) { continue; } else {
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925Chapter 47Converting Static HTML (Web space) Sites$B_rating = $l_arr[10]; $B_action

Sunday, April 20th, 2008

925Chapter 47Converting Static HTML Sites$B_rating = $l_arr[10]; $B_action = $l_arr[17]; $B_humor = $l_arr[18]; $B_romance = $l_arr[19]; $B_sex = $l_arr[20]; $B_violence = $l_arr[21]; $B_reviewer = addslashes($l_arr[23]); $B_pages = $l_arr[24]; $B_reviewdate = $l_arr[25]; // Reformat the review date from m/d/yy to yyyy-mm-dd$date_arr = explode( / , $B_reviewdate); $B_reviewdate = date( Y-m-d , mktime(12, 30, 0, $date_arr[0], $date_arr[1], $date_arr[2])); $B_ISBN = $l_arr[26]; $B_movie = addslashes($l_arr[27]); $B_awards = addslashes($l_arr[28]); $B_review = addslashes($l_arr[29]); $B_blurb = addslashes($l_arr[30]); // Subgenre info$Subgenre[1] = addslashes($l_arr[5]); $Subgenre[2] = addslashes($l_arr[6]); $Subgenre[3] = addslashes($l_arr[7]); // Enter data into database// ———————— // Author data// First see if this author is already in the database$query = SELECT A_id FROM authorWHERE A_firstname = $A_firstname AND A_lastname = $A_lastname ; $result = mysql_query($query); if (mysql_num_rows($result) == 0) { // If not already there, add the author$query = INSERT INTO author VALUES( NULL, $A_firstname , $A_lastname , $A_gender, $A_nationality , $A_interview ) ; $result = mysql_query($query); if (mysql_affected_rows() != 1) { echo Problem inserting author data for $A_firstname$A_lastname ; } else { Continued53
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