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| Code | ||||||||||
// Chart Search version 1 // // Peter T Garner. // Uses PHP and MySQL. // This works fine on my Mitsubishi Trium. YMMV. // I developed this on the Linux version of the // deckit emulator from www.pyweb.com. // // This is the first deck that prompts you for // a chart (table), then a (book) Isbn to search for. // // N.B ****************** // The decks detailed below serve to illustrate // how WML can be combined with PHP and MySQL to // enable WAP-enabled devices to select and display // data from a multi-table database. I used book chart // data from my employer, Whitaker BookTrack (see // http://www.booktrack.co.uk) as part of a pilot project. // Currently, there is no WAP based service from Whitaker // BookTrack, but this may change in the near future. Please // contact me at peterg@teleord.co.uk for more information. <?php header("Content-type: text/vnd.wap.wml"); echo "<?xml version=\"1.0\" ?>"; ?> <!DOCTYPE wml PUBLIC "-//PHONE.COM//DTD WML 1.1//EN" "http://www.phone.com/dtd/wml11.dtd" > <wml> <template> <do type="prev" label="Previous"> <prev/> </do> </template> <card id="card0" ontimer="#card1"> <timer name="key" value="30"/> <p align="center"> <strong><big>ChartSearch..</big></strong> <br/> from <strong><big>BookTrack</big></strong> <br/> <small> <i> For Charts on the Move ! </i> </small> </p> </card> <!-- chart select --> <card id="card1" title="Selector"> <p> Please select a chart from the list:<br/> <?php if ( $DBcon = mysql_connect("localhost", "","") ) { $result = mysql_list_tables("chart"); $i = 0; echo "<select name=\"myChart\">"; while ($i < mysql_num_rows ($result) ) { $tn[$i] = mysql_tablename ($result, $i); echo "<option value=\"$tn[$i]\">$tn[$i]"; echo "</option>"; $i++; } echo "</select>"; } mysql_close($DBcon); ?> <do type="accept" label="Proceed"> <go href="#card2" method="post"> </go> </do> </p> </card> <!-- enter search data --> <!-- We only want digits 1-9 of the Isbn as it will be unique in the database without the check digit. If we assume a match for the Isbn, the check digit will be added when the result is returned. Note the 2 postfield statements that will pass on the 2 variables that we collect on the way. We need to post them now as we are going to leave this deck after we enter the ISBN --> <card id="card2" title="Search"> <p> <do type="accept" label="Search"> <go href="c2b.wml" method="post"> <postfield name="Isbn" value="$Isbn"/> <postfield name="myChart" value="$myChart" /> </go> </do> Enter Isbn:<br/> <input title="Isbn" name="Isbn" size="9" maxlength="9" format="NNNNNNNNN"/> </p> </card> </wml> // Once you have selected your database table and entered // your search string, this deck is then accessed (c2b.wml). // It uses a simple MySQL database called "Charts" and the // tables are named according to the week they relate to. // Please note that this script doesn't do any checking for // length of output. If it's over the limit you will probably // get a 'malformed http' message or something similar. This // will be tidied up in the next version.. <?php header("Content-type: text/vnd.wap.wml"); echo "<?xml version=\"1.0\" ?>"; ?> <!DOCTYPE wml PUBLIC "-//PHONE.COM//DTD WML 1.1//EN" "http://www.phone.com/dtd/wml11.dtd" > <wml> <template> <do type="prev" label="Go Back"> <prev/> </do> </template> <card id="card2" title="Result"> <p> <?php if ( !empty($Isbn) ) { if ( $DBcon = mysql_connect("localhost", "","") ) { mysql_select_db("chart"); $query = "select ISBN, cPosition, Author, Title, "; $query .= " RRP, ASP, WeeksIn, PrevPos, Imprint from "; $query .= $myChart; $query .= " where ISBN like '$Isbn%'"; $result = mysql_query($query); $row = mysql_fetch_array($result); if ( $row ) { // // we need to change any ampersands to '+' // $TI = strtr($row[Title], "&", "+"); $AU = strtr($row[Author], "&", "+"); // // sometimes, an author is not listed on the database // if ( empty($row[Author])) { $AU = "unknown"; } // // we need to change any ampersands to '+' // $AU = explode (",", $AU); $PU = strtr($row[Imprint], "&", "+"); // // now we will display our result.. We swap the first // and last names of the author to produce a user-friendly // display. // echo "Isbn $row[ISBN] is '$TI' by '$AU[1] $AU[0]' with an "; echo "RRP of #$row[RRP]. "; echo "Currently it is at number $row[cPosition]. "; // // A more user-friendly display of new entries.. // if ( $row[WeeksIn] == '0' ) { echo "This is a new entry in the charts. "; } else { echo "It has been in the charts for "; echo "$row[WeeksIn] "; echo "weeks. "; echo "Last week it was at number "; echo "$row[PrevPos]. "; } // Say who publishes it .. echo "It is published by $PU. "; echo "The typical street price is #$row[ASP]"; // // And show a disclaimer along with the tablename // that we used.. // echo "<br/><br/><small>(C) BookTrack " . date('Y') . "<br/>E&OE</small>"; echo "<br/><small>$myChart</small>"; } else { echo "Sorry<br/>No match for $Isbn"; } mysql_close($DBcon); } } else { echo "You can't have an empty ISBN"; } ?> <br/> </p> </card> </wml> | ||||||||||
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