troubles with vars

coldwerturkey

I run into this problem almost weekly and end up writing way to much code, I think I should finally get some advice from you guys...

if I have a list of items, and one returns true from an if statement, how do i get the var to equal true on only the one item...

for example;

if ($_GET['blah'] == y) {
    $select = "selected='selected'";
}
echo "
<select>
  <option $select>x</option>
  <option $select>y</option>
  <option $select>z</option>
  .....and so on
</select>
";

if blah=y, I want y to be the only one to get "selected", if I was doing this with numbers, or from database, I would just loop it... but the options are unique and static, so normally I would write and if statement for each option, and just put the "selected=selected" in there, but, there has to be a better way

thank you

devphp12

<?php
$val=$_GET['blah'];
$select="selected";

?><select>
<option <?php if($val=='x'){ echo $select;}?>>x</option>
<option <?php if($val=='y'){ echo $select;}?>>y</option>
<option <?php if($val=='z'){ echo $select;}?>>z</option>
</select>

NogDog

<?php
$values = array('x', 'y', 'z');
$blah = (!empty($_GET['blah'])) ? $_GET['blah'] : null;
?>
<select name='example'>
<?php
foreach($values as $val)
{
   printf(
      "<option value='%s'%s>%s</option>\n",
      $val,
      ($val == $blah) ? " selected='selected'" : '',
      $val
   );
}
?>
</select>

coldwerturkey

amazing. thank you so much.

I have one question though, out of curiosity, can you please explain this line, I think I know what it does, I just don't understand the question mark and following code.

code=php ? $_GET['blah'] : null; [/code]

NogDog

coldwerturkey;10885096 wrote:
amazing. thank you so much.

I have one question though, out of curiosity, can you please explain this line, I think I know what it does, I just don't understand the question mark and following code.

code=php ? $_GET['blah'] : null; [/code]

The "ternary" operator ("?" plus ":") evaluates the expression before the "?", and if it is true returns the expression after the "?", else it returns the expression after the ":". So essentially it is a shorthand version of an if(<expression>) { <expression>} else { <expression> } construct.

coldwerturkey

that you, very much appreciated, will definitely come in handy.

coldwerturkey

I have a more practical problem, kinda the same question...

I have a menu, and a sub menu below it. I want the current page in the main menu to be highlighted, which I did, but the problem is the sub menu has multiple pages.. so the main menu item has to be highlighted for all the possible submenu items....

//"Events" is a title in the menu, that has the sub pages 02, 05, 03, 09...
$events = array('02', '05', '03', '09');
//Season Tickets same thing, sub pages of 33, 34, 23, 26
$seasontickets = array('33', '34', '23', '26');
//.. and so on

//All different main menu pages to list with the first subpage number...
$titles = array(
	'Events' => '02', 
	'Season Tickets' => '33', 
	'News' => '13', 
	'Upcomming' => '19', 
	'Settings' => '39', 
	'Users' => '47', 
	'Logout' => '99'
);
$page = (!empty($_GET['act'])) ? $_GET['act'] : null; 
foreach($titles as $k => $v) {
   //html was here
  if (in_array($v, $events)) { echo " bgcolor='#eaeaea'"; } 
   //more html was here
    echo "<a href='?act=$v&sub=$v'>$k</a>";
}

So, I'm trying to get 'Events' to be highlighted, if its on page 'Main' (02), 'Manage' (05) etc.. which I managed to do by adding in_array($v, $events) but, that obviously doesn't work when I'm in a different main menu item than 'events'...

I don't know what I'm looking for.. maybe is there a way a key in an array can be an OR statement or something, so 'Events' => '02' OR '05' OR ..etc,

Please help,