Membuat Modul Polling Dengan PHP

bygibraltargothic -
0
Biasanya dengan mudah kita mendapatkan source2 widget polling dari om goOgle.Yang kali ini ingin saya paparkan adalah bagaimana caranya kalau kita ingin ” Membuat module Polling sendiri ? “.Dengan Php tentunya.Sebenarnya menggunakan Ajax juga bisa,tapi kita coba pelajari saja dulu yah dengan Php Script yang menggunakan database Sql server.




Langkah pertama kita siapkan dulu DataBase untuk php nya.

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01create database poll;<br />
02use poll;<br />
03create table poll_results (<br />
04 candidate varchar(30),<br />
05 num_votes int<br />
06);<br />
07insert into poll_results values<br />
08 ('Bagus', 0),<br />
09 ('Lumayan', 0),<br />
10 ('Kurang Bagus', 0)<br />
11; </p>
12<p>grant all privileges<br />
13on poll.*<br />
14to poll@localhost<br />
15identified by 'poll';


Setelah kita membuat Database(db)nya,selajutnya kita siapkan form untuk Pengisian data vottingnya.

vote.html

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01&amp;lt;html&amp;gt;<br />
02&amp;lt;head&amp;gt;<br />
03 &amp;lt;title&amp;gt;Polling&amp;lt;/title&amp;gt;<br />
04&amp;lt;head&amp;gt;<br />
05&amp;lt;body&amp;gt;<br />
06&amp;lt;h1&amp;gt;Polling&amp;lt;/h1&amp;gt;<br />
07&amp;lt;p&amp;gt;Bagaimana Menurut Kamu Tampilan Blog Ini?&amp;lt;/p&amp;gt;<br />
08&amp;lt;form method=post action=&quot;show_poll.php&quot;&amp;gt;<br />
09&amp;lt;input type=radio name=vote value=&quot;bagus&quot;&amp;gt;Bagus&amp;lt;br /&amp;gt;<br />
10&amp;lt;input type=radio name=vote value=&quot;Lumayan&quot;&amp;gt;Lumayan&amp;lt;br /&amp;gt;<br />
11&amp;lt;input type=radio name=vote value=&quot;Kurang Bagus&quot;&amp;gt;Kurang Bagus&amp;lt;br /&amp;gt;&amp;lt;br /&amp;gt;<br />
12&amp;lt;input type=submit value=&quot;Show results&quot;&amp;gt;<br />
13&amp;lt;/form&amp;gt;<br />
14&amp;lt;/body&amp;gt;


ok..form pengisian votting sudah kita buat,selanjutnya apa bro ? selanjutnya kita akan buat Php Untuk Menampilkan Data Votting Yang Sudah Berhasil di hasilkan oleh Sql Server.

Save As show_poll.php

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001&lt;?php<br />
002/*******************************************<br />
003Query Database untuk mendapatkan info polling<br />
004*******************************************/</p>
005<p>$vote=$_REQUEST['vote'];</p>
006<p>// membuat koneksi ke database </p>
007<p>if (!$db_conn = mysql_connect('localhost', 'poll', 'poll'))<br />
008{<br />
009 echo 'Could not connect to db&amp;lt;br /&amp;gt;';<br />
010 exit;<br />
011};<br />
012@mysql_select_db('poll');</p>
013<p>if (!empty($vote))<br />
014{<br />
015 $vote = addslashes($vote);<br />
016 $query = &quot;update poll_results<br />
017 set num_votes = num_votes + 1<br />
018 where candidate = '$vote'&quot;;<br />
019 if(!($result = @mysql_query($query, $db_conn)))<br />
020 {<br />
021 echo 'Tidak Bisa Konek Ke Database&amp;lt;br /&amp;gt;';<br />
022 exit;<br />
023 }<br />
024};</p>
025<p>$query = 'select * from poll_results';<br />
026if(!($result = @mysql_query($query, $db_conn)))<br />
027{<br />
028 echo 'Tidak Bisa Konek Ke Database&amp;lt;br /&amp;gt;';<br />
029 exit;<br />
030}<br />
031$num_candidates = mysql_num_rows($result); </p>
032<p>$total_votes=0;<br />
033while ($row = mysql_fetch_object ($result))<br />
034{<br />
035 $total_votes +=  $row-&amp;gt;num_votes;<br />
036}<br />
037mysql_data_seek($result, 0);</p>
038<p>/*******************************************<br />
039 Kalkulasi Membuat Grapic Votting<br />
040*******************************************/</p>
041<p>putenv('GDFONTPATH=C:\WINDOWS\Fonts');<br />
042$width=500;        // mengatur lebar hasil image votting<br />
043$left_margin = 50;<br />
044$right_margin= 50;<br />
045$bar_height = 40;<br />
046$bar_spacing = $bar_height/2;<br />
047$font = 'arial';<br />
048$title_size= 16;<br />
049$main_size= 12;<br />
050$small_size= 12;<br />
051$text_indent = 10; </p>
052<p>$x = $left_margin + 60;<br />
053$y = 50;<br />
054$bar_unit = ($width-($x+$right_margin)) / 100;   </p>
055<p>$height = $num_candidates * ($bar_height + $bar_spacing) + 50;   </p>
056<p>/*******************************************<br />
057 Membuat Image hasil Votting<br />
058*******************************************/</p>
059<p>$im = ImageCreateTrueColor($width,$height);   </p>
060<p>$white=ImageColorAllocate($im,255,255,255);<br />
061$blue=ImageColorAllocate($im,0,64,128);<br />
062$black=ImageColorAllocate($im,0,0,0);<br />
063$pink = ImageColorAllocate($im,255,78,243); </p>
064<p>$text_color = $black;<br />
065$percent_color = $black;<br />
066$bg_color = $white;<br />
067$line_color = $black;<br />
068$bar_color = $blue;<br />
069$number_color = $pink;</p>
070<p>ImageFilledRectangle($im,0,0,$width,$height,$bg_color);   </p>
071<p>ImageRectangle($im,0,0,$width-1,$height-1,$line_color);   </p>
072<p>$title = 'Poll Results';<br />
073$title_dimensions = ImageTTFBBox($title_size, 0, $font, $title);<br />
074$title_length = $title_dimensions[2] - $title_dimensions[0];<br />
075$title_height = abs($title_dimensions[7] - $title_dimensions[1]);<br />
076$title_above_line = abs($title_dimensions[7]);<br />
077$title_x = ($width-$title_length)/2;<br />
078$title_y = ($y - $title_height)/2 + $title_above_line;<br />
079ImageTTFText($im, $title_size, 0, $title_x, $title_y,<br />
080 $text_color, $font, $title); Â </p>
081<p>ImageLine($im, $x, $y-5, $x, $height-15, $line_color);   </p>
082<p>/*******************************************<br />
083 Draw data ke graphic<br />
084*******************************************/</p>
085<p>while ($row = mysql_fetch_object ($result))<br />
086{<br />
087 if ($total_votes &amp;gt; 0)<br />
088 $percent = intval(round(($row-&amp;gt;num_votes/$total_votes)*100));<br />
089 else<br />
090 $percent = 0;</p>
091<p> $percent_dimensions = ImageTTFBBox($main_size, 0, $font, $percent.'%');<br />
092 $percent_length = $percent_dimensions[2] - $percent_dimensions[0];<br />
093 ImageTTFText($im, $main_size, 0, $width-$percent_length-$text_indent,<br />
094 $y+($bar_height/2), $percent_color, $font, $percent.'%'); Â </p>
095<p> if ($total_votes &amp;gt; 0)<br />
096 $right_value = intval(round(($row-&amp;gt;num_votes/$total_votes)*100));<br />
097 else<br />
098 $right_value = 0;</p>
099<p> $bar_length = $x + ($right_value * $bar_unit);   </p>
100<p> ImageFilledRectangle($im, $x, $y-2, $bar_length, $y+$bar_height, $bar_color);   </p>
101<p> ImageTTFText($im, $main_size, 0, $text_indent, $y+($bar_height/2),<br />
102 $text_color, $font, &quot;$row-&amp;gt;candidate&quot;); Â </p>
103<p> ImageRectangle($im, $bar_length+1, $y-2,<br />
104 ($x+(100*$bar_unit)), $y+$bar_height, $line_color);   </p>
105<p> ImageTTFText($im, $small_size, 0, $x+(100*$bar_unit)-50, $y+($bar_height/2),<br />
106 $number_color, $font, $row-&amp;gt;num_votes.'/'.$total_votes);</p>
107<p> $y=$y+($bar_height+$bar_spacing);<br />
108}   </p>
109<p>/*******************************************<br />
110 Image Option<br />
111*******************************************/<br />
112Header('Content-type:  image/png');<br />
113ImagePNG($im);   </p>
114<p>/*******************************************<br />
115 Hasil Akhir<br />
116*******************************************/<br />
117ImageDestroy($im);<br />
118?&gt;<br />


Nanti Hasil Untuk Votting Php Nya kira2 seperti gambar ini :

Sudah Selesai Kita membuat module Votting/polling dengan PHp,Mudah Bukan Membuatnya? jangan lupa juga untuk menyesuaikan parametter databasenya. :)
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