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3rd July 16:32
External User
Posts: 1
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Dynamic tables
Hi all,
Having a slight problem with dynamic tables here. I am trying to create a timetable using PHP, HTML, and MySQL, where all the cells in the table are coloured and that the colour of the cells can be changed using a drop down menu. Here's a snip of the code that I have done: <td bgcolor=<? echo"$_POST[colour]"?> class="Devi" width="15%" align="center" valign="middle"><a href="select1.php">2PE1012</a></td> <select name="colour" class="textarea" align="center"> <option name= "Grey" value="#dedede">Grey</option> <option name="Pink" value="#FFB6C1">Pink</option> <option name="Blue" value="#87CEEB">Blue</option> <option name=Yellow value="#FFFF00">Yellow</option> <option name="Cyan" value="#AFEEEE">Cyan</option> </select> Right now, I am able to change the colour of cells using a drop down menu, and when I clicked on "Reload" it still remains the colour that I have changed, but when I open the page in another browser, as I echoed the value "colour", the browser displayed a mixture of the colour code :grey, pink, blue, etc.... How can I do it in the way that when I opened up a new browser it will display only the colour that I have changed to earlier on?....Hope to get some help soon...thanks for all help given. Regards, Irin. |
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3rd July 16:33
External User
Posts: 1
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Dynamic tables
You're trying to hold state. To do this, you need to use a cookie or a
session. There are also several problems with the script you seem to be using (for example, it's open to code injection). Hopefully, you'll be able to tease some sense out of this: <? $valid_colours = array ('Grey' => '#dedede', 'Pink' => '#ffb6c1', 'Blue' => '#87ceeb', 'Yellow' => '#ffff00', 'Cyan' => '#afeeee'); /* valid responses */ session_start(); if (isset ($_POST['textcolour'])) { /* check that incoming textcolour is one of the permitted values */ if (in_array ($_POST['textcolour'], $valid_colours)) { $_SESSION['textcolour'] = $_POST['textcolour']; header ("Location: $PHP_SELF"); exit (); } } /* if we don't have a colour, default to grey */ if (isset ($_SESSION['textcolour']) == FALSE) { $_SESSION['textcolour'] = $valid_colours['Grey']; } ?> <html> <body> <table bgcolor="<? echo ($_SESSION['textcolour']); ?>"> <tr><td>Test</td></tr> </table> <form method="post" action="<? echo ($PHP_SELF); ?>"> <select name="textcolour"> <? foreach ($valid_colours as $colour => $value) { if ($value == $_SESSION['textcolour']) { echo ("<option value=\"$value\" selected>$colour</option>"); } else { echo ("<option value=\"$value\">$colour</option>"); } } ?> </select> <input type="submit" name="change" value="Change"> </form> </body> </html> |
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Linear Mode
