lkGrangerMcQuadept
New Member
I am making a "color-me-table", where I have a grid of cells, and the user chooses a cell, then can decide on what to change the color in that cell to. I have the table down, but I do no really understand sessions. I could have just asked a general question about sessions, but I thought this example might make more sense. Here is my table, without any real functionality:\[code\]<?php session_start() ; if(!isset($_SESSION['color_data'])){ $_SESSION['color_data']=array( array("#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999"), array("#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999"), array("#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999"), array("#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999"), array("#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999"), array("#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999"), array("#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999"), array("#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999"), array("#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999"), array("#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999", "#999999") ); } switch($_POST['col']) { case "0" : case "1" : case "2" : case "3" : case "4" : case "5" : case "6" : case "7" : case "8" : case "9" : $col = $_POST['col'] ; } switch($_POST['row']) { case "0" : case "1" : case "2" : case "3" : case "4" : case "5" : case "6" : case "7" : case "8" : case "9" : $row = $_POST['row'] ; } switch($_POST['r']) { case "00" : case "33" : case "66" : case "99" : case "CC" : case "FF" : $r = $_POST['r'] ; } switch($_POST['g']) { case "00" : case "33" : case "66" : case "99" : case "CC" : case "FF" : $g = $_POST['g'] ; } switch($_POST['b']) { case "00" : case "33" : case "66" : case "99" : case "CC" : case "FF" : $b = $_POST['b'] ; } $color_data= http://stackoverflow.com/questions/3893026/$_SESSION['color_data'] ; if ($r && $g && $b) { $color_data[$_POST["row"]][$_POST["col"]]= "#$r$g$b"; } if (!is_null($r) && !is_null($g) && !is_null($b) && !is_null($row) && !is_null($column) ) { $color_value = "http://stackoverflow.com/questions/3893026/#$r$g$b" ; $color_data[] = array($row, $column, $color_value) ; } $_SESSION['color_data'] = $color_data ;?><html> <head> <title>Color Me Table</title> </head> <body><?php echo $color_value ; ?> <form action="assignment4.php" method="POST"> <table> <tr><td width="20"></td><td><input type="radio" name="col" value="http://stackoverflow.com/questions/3893026/0">0</td><td><input type="radio" name="col" value="http://stackoverflow.com/questions/3893026/1">1</td><td><input type="radio" name="col" value="http://stackoverflow.com/questions/3893026/2">2</td><td><input type="radio" name="col" value="http://stackoverflow.com/questions/3893026/3">3</td><td><input type="radio" name="col" value="http://stackoverflow.com/questions/3893026/4">4</td><td><input type="radio" name="col" value="http://stackoverflow.com/questions/3893026/5">5</td><td><input type="radio" name="col" value="http://stackoverflow.com/questions/3893026/6">6</td><td><input type="radio" name="col" value="http://stackoverflow.com/questions/3893026/7">7</td><td><input type="radio" name="col" value="http://stackoverflow.com/questions/3893026/8">8</td><td><input type="radio" name="col" value="http://stackoverflow.com/questions/3893026/9">9</td></tr><tr><td><input type="radio" name="row" value="http://stackoverflow.com/questions/3893026/0">0</td><td width="20" bgcolor="#999999">00</td><td width="20" bgcolor="#999999">01</td><td width="20" bgcolor="#999999">02</td><td width="20" bgcolor="#999999">03</td><td width="20" bgcolor="#999999">04</td><td width="20" bgcolor="#999999">05</td><td width="20" bgcolor="#999999">06</td><td width="20" bgcolor="#999999">07</td><td width="20" bgcolor="#999999">08</td><td width="20" bgcolor="#999999">09</td></tr><tr><td><input type="radio" name="row" value="http://stackoverflow.com/questions/3893026/1">1</td><td width="20" bgcolor="#999999">10</td><td width="20" bgcolor="#999999">11</td><td width="20" bgcolor="#999999">12</td><td width="20" bgcolor="#999999">13</td><td width="20" bgcolor="#999999">14</td><td width="20" bgcolor="#999999">15</td><td width="20" bgcolor="#999999">16</td><td width="20" bgcolor="#999999">17</td><td width="20" bgcolor="#999999">18</td><td width="20" bgcolor="#999999">19</td></tr><tr><td><input type="radio" name="row" value="http://stackoverflow.com/questions/3893026/2">2</td><td width="20" bgcolor="#999999">20</td><td width="20" bgcolor="#999999">21</td><td width="20" bgcolor="#999999">22</td><td width="20" bgcolor="#999999">23</td><td width="20" bgcolor="#999999">24</td><td width="20" bgcolor="#999999">25</td><td width="20" bgcolor="#999999">26</td><td width="20" bgcolor="#999999">27</td><td width="20" bgcolor="#999999">28</td><td width="20" bgcolor="#999999">29</td></tr><tr><td><input type="radio" name="row" value="http://stackoverflow.com/questions/3893026/3">3</td><td width="20" bgcolor="#999999">30</td><td width="20" bgcolor="#999999">31</td><td width="20" bgcolor="#999999">32</td><td width="20" bgcolor="#999999">33</td><td width="20" bgcolor="#999999">34</td><td width="20" bgcolor="#999999">35</td><td width="20" bgcolor="#999999">36</td><td width="20" bgcolor="#999999">37</td><td width="20" bgcolor="#999999">38</td><td width="20" bgcolor="#999999">39</td></tr><tr><td><input type="radio" name="row" value="http://stackoverflow.com/questions/3893026/4">4</td><td width="20" bgcolor="#999999">40</td><td width="20" bgcolor="#999999">41</td><td width="20" bgcolor="#999999">42</td><td width="20" bgcolor="#999999">43</td><td width="20" bgcolor="#999999">44</td><td width="20" bgcolor="#999999">45</td><td width="20" bgcolor="#999999">46</td><td width="20" bgcolor="#999999">47</td><td width="20" bgcolor="#999999">48</td><td width="20" bgcolor="#999999">49</td></tr><tr><td><input type="radio" name="row" value="http://stackoverflow.com/questions/3893026/5">5</td><td width="20" bgcolor="#999999">50</td><td width="20" bgcolor="#999999">51</td><td width="20" bgcolor="#999999">52</td><td width="20" bgcolor="#999999">53</td><td width="20" bgcolor="#999999">54</td><td width="20" bgcolor="#999999">55</td><td width="20" bgcolor="#999999">56</td><td width="20" bgcolor="#999999">57</td><td width="20" bgcolor="#999999">58</td><td width="20" bgcolor="#999999">59</td></tr><tr><td><input type="radio" name="row" value="http://stackoverflow.com/questions/3893026/6">6</td><td width="20" bgcolor="#999999">60</td><td width="20" bgcolor="#999999">61</td><td width="20" bgcolor="#999999">62</td><td width="20" bgcolor="#999999">63</td><td width="20" bgcolor="#999999">64</td><td width="20" bgcolor="#999999">65</td><td width="20" bgcolor="#999999">66</td><td width="20" bgcolor="#999999">67</td><td width="20" bgcolor="#999999">68</td><td width="20" bgcolor="#999999">69</td></tr><tr><td><input type="radio" name="row" value="http://stackoverflow.com/questions/3893026/7">7</td><td width="20" bgcolor="#999999">70</td><td width="20" bgcolor="#999999">71</td><td width="20" bgcolor="#999999">72</td><td width="20" bgcolor="#999999">73</td><td width="20" bgcolor="#999999">74</td><td width="20" bgcolor="#999999">75</td><td width="20" bgcolor="#999999">76</td><td width="20" bgcolor="#999999">77</td><td width="20" bgcolor="#999999">78</td><td width="20" bgcolor="#999999">79</td></tr><tr><td><input type="radio" name="row" value="http://stackoverflow.com/questions/3893026/8">8</td><td width="20" bgcolor="#999999">80</td><td width="20" bgcolor="#999999">81</td><td width="20" bgcolor="#999999">82</td><td width="20" bgcolor="#999999">83</td><td width="20" bgcolor="#999999">84</td><td width="20" bgcolor="#999999">85</td><td width="20" bgcolor="#999999">86</td><td width="20" bgcolor="#999999">87</td><td width="20" bgcolor="#999999">88</td><td width="20" bgcolor="#999999">89</td></tr><tr><td><input type="radio" name="row" value="http://stackoverflow.com/questions/3893026/9">9</td><td width="20" bgcolor="#999999">90</td><td width="20" bgcolor="#999999">91</td><td width="20" bgcolor="#999999">92</td><td width="20" bgcolor="#999999">93</td><td width="20" bgcolor="#999999">94</td><td width="20" bgcolor="#999999">95</td><td width="20" bgcolor="#999999">96</td><td width="20" bgcolor="#999999">97</td><td width="20" bgcolor="#999999">98</td><td width="20" bgcolor="#999999">99</td></tr> </table> <table border="1" > <tr> <th>Red</th> <th>Green</th> <th>Blue</th> </tr> <tr> <td> <select name="r" > <option value="http://stackoverflow.com/questions/3893026/FF" >100%</option> <option value="http://stackoverflow.com/questions/3893026/CC" >80%</option> <option value="http://stackoverflow.com/questions/3893026/99" >60%</option> <option value="http://stackoverflow.com/questions/3893026/66" >40%</option> <option value="http://stackoverflow.com/questions/3893026/33" >20%</option> <option value="http://stackoverflow.com/questions/3893026/00" >0%</option> </select> </td> <td> <select name="g" > <option value="http://stackoverflow.com/questions/3893026/FF" >100%</option> <option value="http://stackoverflow.com/questions/3893026/CC" >80%</option> <option value="http://stackoverflow.com/questions/3893026/99" >60%</option> <option value="http://stackoverflow.com/questions/3893026/66" >40%</option> <option value="http://stackoverflow.com/questions/3893026/33" >20%</option> <option value="http://stackoverflow.com/questions/3893026/00" >0%</option> </select> </td> <td> <select name="b" > <option value="http://stackoverflow.com/questions/3893026/FF" >100%</option> <option value="http://stackoverflow.com/questions/3893026/CC" >80%</option> <option value="http://stackoverflow.com/questions/3893026/99" >60%</option> <option value="http://stackoverflow.com/questions/3893026/66" >40%</option> <option value="http://stackoverflow.com/questions/3893026/33" >20%</option> <option value="http://stackoverflow.com/questions/3893026/00" >0%</option> </select> </td> </tr> </table> <input type="submit" name="submit" value="http://stackoverflow.com/questions/3893026/Submit" /> </form> </body></html>\[/code\]