Long description

Extended-example dot p h p: Line 1: open angle bracket question mark p h p. Line 2: include open single quote book hyphen data dot inc dot p h p close single quote semicolon. Line 3: Forward slash forward slash has the user selected a book to display?. Line 4: StartCommand if EndCommand open parenthesis is set open parenthesis dollar symbol underscore GET open square bracket open single quote i s b n close single quote close square bracket close parenthesis close parenthesis open curly brace. Line 5: dollar symbol i s b n equals dollar symbol underscore GET open square bracket open single quote i s b n close single quote close square bracket semicolon. Comment to lines 3 to 5: if is set open parenthesis close parenthesis is false, then the specified query string value is missing. Line 6: Forward slash forward slash ensure we have this i s b n in our data. Line 7: StartCommand if EndCommand open parenthesis exclamation mark array underscore key underscore exists open parenthesis dollar symbol i s b n, dollar symbol books close parenthesis close parenthesis open curly brace. Line 8: dollar symbol i s b n equals dollar symbol default I S B N semicolon. Line 9: Close curly brace. Line 10: Close curly brace. Line 11: StartCommand else EndCommand open curly brace. Line 12: Forward slash forward slash if non selected, display first in list. Line 13: dollar symbol i s b n equals dollar symbol default I S B N semicolon. Line 14: Close curly brace. Line 15: Question mark close angle bracket. H T M L code: Line 1: Open angle bracket exclamation mark DOCTYPE h t m l close angle bracket. Line 2: open angle bracket h t m l close angle bracket. Line 3: Open angle bracket head close angle bracket dot dot dot open angle bracket forward slash head close angle bracket. Line 4: Open angle bracket body close angle bracket. Line 5: dot dot dot. Line 6: open angle bracket section class equals open double quotes card list close double quotes close angle bracket. Line 7: Open angle bracket div class equals open double quotes card hyphen content close double quotes close angle bracket. Comment to lines 6 to Line: Loop through books array and display each book title as a link. Line 8: open angle bracket u l close angle bracket. Line 9: open angle bracket question mark p h p. Line 10: StartCommand for each EndCommand open parenthesis dollar symbol books as dollar symbol key double arrow operator dollar symbol value close parenthesis open curly brace. Line 11: echo open single quote open angle bracket l i close angle bracket close single quote semicolon. Line 12: echo open single quote open angle bracket “a” h ref equals open double quotes extended hyphen example dot p h p question mark i s b n equals close single quote dot dollar symbol key dot open single quote close double quotes close angle bracket close single quote semicolon. Line 13: echo dollar symbol value open square bracket open single quote title close single quote close square bracket semicolon. Line 14: echo open single quote open angle bracket forward slash “a” close angle bracket close single quote semicolon. Line 15: echo open single quote open angle bracket forward slash l i close angle bracket close single quote semicolon. Line 16: Close curly brace. Line 17: Question mark close angle bracket. Comment to lines 10 to 17: Ideally, we would create a function to do this task, thus reducing the amount of code in our markup. Line 18: open angle bracket forward slash u l close angle bracket. Line 19: Open angle bracket forward slash div close angle bracket. Line 20: Open angle bracket forward slash section close angle bracket. Line 21: Open angle bracket section class equals open double quotes card close double quotes close angle bracket. Comment to line 21: Display book details for the specified I S B N. Line 22: Open angle bracket figure close angle bracket. Line 23: open angle bracket img s r c equals open double quotes images forward slash open angle bracket question mark p h p echo dollar symbol i s b n semicolon question mark close angle bracket dot j p g close double quotes. Line 24: alt equals open double quotes open angle bracket question mark p h p echo dollar symbol books open square bracket dollar symbol i s b n close square bracket open square bracket open double quotes title close double quotes close square bracket colon question mark close angle bracket close double quotes close angle bracket. Line 25: Open angle bracket forward slash figure close angle bracket. Line 26: Open angle bracket div class equals open double quotes card hyphen content close double quotes close angle bracket. Line 27: Open angle bracket p close angle bracket open angle bracket span close angle bracket I S B N colon open angle bracket forward slash span close angle bracket open angle bracket question mark p h p echo dollar symbol i s b n semicolon question mark close angle bracket open angle bracket forward slash p close angle bracket. Line 28: Open angle bracket p close angle bracket open angle bracket span close angle bracket Year colon open angle bracket forward slash span close angle bracket open angle bracket question mark p h p echo dollar symbol books open square bracket dollar symbol i s b n close square bracket open square bracket open double quotes year close double quotes close square bracket colon question mark close angle bracket open angle bracket forward slash p close angle bracket. Line 29: open angle bracket p close angle bracket open angle bracket span close angle bracket Pages colon open angle bracket forward slash span close angle bracket open angle bracket question mark p h p echo dollar symbol books open square bracket dollar symbol i s b n close square bracket open square bracket open double quotes pages close double quotes close square bracket semicolon question mark close angle bracket open angle bracket forward slash p close angle bracket. Line 30: Open angle bracket p close angle bracket open angle bracket question mark p h p echo dollar symbol books open square bracket dollar symbol i s b n close square bracket open square bracket open double quotes description close double quotes close square bracket colon question mark close angle bracket open angle bracket forward slash p close angle bracket. Line 31: open angle bracket forward slash div close angle bracket. Line 32: Open angle bracket forward slash section close angle bracket. Line 33: Open angle bracket forward slash body close angle bracket open angle bracket forward slash html close angle bracket.