PHP - Can You Let Me Know Proper Way To Write This Nested Loop?

I'm a bit confused here on for loops. I don't quite understand why this script outputs what it does and I'd like it if someone could explain it to me.

Code: (php) [Select]
<?php
for ($i = 1; $i < 3; $i = $i + 1) {
for ($j = 1; $j < 3; $j = $j + 1) {
echo "'i' is {$i}, 'j' is {$j}<br />";
}
}
?>
Result:
Code: [Select]
'i' is 1, 'j' is 1
'i' is 1, 'j' is 2
'i' is 2, 'j' is 1
'i' is 2, 'j' is 2

Hello i am new here, and new to php too.
I try to learn php from about 20 days, and i am getting stuck in something, somebody asked me to make a program that will produce the following output, i have to use a nested for loop:
1
22
333
4444
55555
........etc

The code for is:
Code: [Select]
for($a=1;$a<10;$a++)
{
   echo "<br>";

   for ($b=0;$b<$a;$b++)
   echo $a;

}I do know this is something elementary, but really i cannot understand how it works is there any saint that will comment the code and explain step by step whats happening there?
Thank you.

I have a while loop nested inside of another while loop to populate a drop-down select box for each result from the parent while loop. The inner loop only gets run once though... any ideas on how to fix this without it being extremely data heavy?

Got a little stuck here.

I'm trying to format an existing .txt file, format it and then write it to .sql file.

Here's my code:

Code: [Select]
$handle = @fopen("nations.txt", "r");
if ($handle) {
    while (($buffer = fgets($handle, 1024)) !== false) {

                      $column = explode("|",$buffer); // format file
                        $myFile = "nation_dump_".date("Y-m-d").".sql"; // create file
$fh = fopen($myFile, 'w') or die("can't open file");

foreach($column as $col)
{
fwrite($fh, $col[0]); //write the first broken segment from explode() to file
}
fclose($fh);
    }
    if (!feof($handle)) {
        echo "Error: unexpected fgets() fail\n";
    }
    fclose($handle);
}

The error is on this line, within the foreach loop.
fwrite($fh, $col[0]);

When I removed the index it only wrote the last line to the file, but I want it to loop through all the lines..

What am I doing wrong here?

Hi Everyone,

I'm trying to use a while loop to dynamically include() .php files if a preg_match condition concerning the file name returns true, e.g.


if ( $hDirectory = opendir($_SERVER["DOCUMENT_ROOT"])) {

   while (false !== ($strFileName = readdir($hDirectory))) {
      
      if ( pathinfo($strFileName, PATHINFO_EXTENSION ) == "php" ) {
         if ( preg_match("/frm_/", $strFileName) ) {
            include_once $strFileName;
         }            
      }
                echo $strFileName;
   }
   closedir($hDirectory);
}   


But, it doesn't seem to work as I thunked it would - the loop iterates several times but then unexpectedly exits, which is wrong because there are hundreds of .php files with 'frm_' in the filename!. Thoughly, as I did expect, should I comment out the include() statement all files names get echoed! and things are happy!!!!

Analogiciously,  I'm doing this because I'm lazy and want to be able to 'drop' .php files into the same directory and have my script automagically include them in my project save me from writing another freaking include statement! Am going about this the wrong way? If so, how did y'all get around the tedious task of having to write hundreds of bloody include() statements in your projects? I've seen this question asked a few times in Google-land, but not answered, which leds me to believe I'm doing something deliciously-evil.

Cheers,
Daniel

Hi, first of all thanks in advance for the help. I'm a newbie college student and am having a little problem with a project for a class that I can't figure out.

I'm trying to construct a loop that creates an array for a javascript image gallery. First I call for the categories and I want to then pull all the images from that category into the array and then loop through all the categories in the database. The code below just cycles through the first category and then quits after pulling the images from that category.


Code: [Select]
        <?php
        // SQL Query for Categories
            $sql="SELECT CategoryID, CategoryName FROM pro2category";
            $result = mysql_query($sql);
            
            if(empty($result))
            {
                $num_results = 0;
            }
            else
            {
                $num_results = mysql_num_rows($result);
            }
        
        ?>
        <?php                                
        for($i=0; $i<$num_results; $i++)
        {
            $row = mysql_fetch_array($result);
            
            $CategoryID = $row["CategoryID"];
            $CategoryName = $row["CategoryName"];

        ?>
       
       
            var <?php echo $CategoryID ?> = new Array();
           
      <!-- Images inside Array -->
      <!-- Images inside Array -->
      <!-- Images inside Array -->
      <!-- Images inside Array -->
           
            <?php
                $sql="SELECT ImageID, ImageName, ImageNumber, URL, CategoryID FROM pro2image WHERE CategoryID='$CategoryID'";
                $result = mysql_query($sql);
                
                if(empty($result))
                {
                    $num_results = 0;
                }
                else
                {
                    $num_results = mysql_num_rows($result);
                }
                
            ?>
           
                <?php                                
                for($i=0; $i<$num_results; $i++)
                {
                    $row = mysql_fetch_array($result);
                    
                    $ImageID = $row["ImageID"];
        
                ?>
               
                <?php echo $CategoryID ?>Array[<?php echo $i ?>] = "http://cgtweb2.tech.purdue.edu/356/zrodimel/Project2/admin/upload/<?php echo $ImageID ?>.jpg";
           
                <?php
                }
                ?>
           
           

        <?php
        }
        ?>
thanks for the help

Zach

hello.

i finally got my nested list working but its only go 2 levels. how do i make it unlimited levels ?

this is a nested list
Code: [Select]
<ul>
<li><a href="#">list</a></li>

<li><a href="#" class="sub">sub title</a>
<ul class="subcat" style="margin-left: 15px">
<li><a href="#">sub title</a></li>
</ul>
</li>
</ul>


this is not the actual code but this is how it works at the moment


Code: [Select]
<ul>

if($Level == "list"){
   
    <li><a href="#">list</a></li>

}elseif($Level == "subList"){

    <li><a href="#" class="sub">sub title</a>
<ul class="subcat" style="margin-left: 15px">
<li><a href="#">sub title</a></li>
</ul>
     </li>

}

</ul>

Hi
I have searched around for a solution to this and either fail to grasp how to get it to work or just cannot find the correct solution.

I have the following XML file:

Code: [Select]
<?xml version="1.0" encoding="UTF-8"?>
<root>

<product>
<id>153</id>

<images>
<image id="1">
<url>http://www.mysite.com/product/images/1322.jpg</url>
<title>
<en>Book 1</en>
</title>
</image>

<image id="2">
<url>http://www.mysite.com/product/images/1321.jpg</url>
<title>
<en>Book 2</en>
</title>
</image>

<image id="3">
<url>http://www.mysite.com/product/images/1316.jpg</url>
<title>
<en>Book 3</en>
</title>
</images>
</product>

<product>
<id>154</id>

<images>
<image id="1">
<url>http://www.mysite.com/product/images/1322.jpg</url>
<title>
<en>Book 1</en>
</title>
</image>

<image id="2">
<url>http://www.mysite.com/product/images/1321.jpg</url>
<title>
<en>Book 2</en>
</title>
</image>

<image id="3">
<url>http://www.mysite.com/product/images/1316.jpg</url>
<title>
<en>Book 3</en>
</title>
</images>
</product>

</root>
$xml = 'example.xml'; // URL for feed.

try{
  $feed = new SimpleXMLElement($xml, null, true);
}catch(Exception $e){
  echo $e->getMessage();
  exit;
}

$sql = 'INSERT INTO images (`id`, `url`) VALUES ';


foreach($feed->property as $property){
  $sql .= sprintf(
    "\n('%d', '%s'),",
   $property->id,
   mysql_real_escape_string($property->images->image->url)
  );
}

$sql = rtrim($sql, ',') . ';';


What I need to do is loop through each of the image url nodes and insert them into my DB with the relevant id. Can somebody point me in the right direction with this please its driving me nuts!

Regards

GT

Hi, I'm developing a "gallery" script so that I can manage my photos online, and I'm having a problem I can't seem to figure out. Hoping someone can help...

So here's my problem.

I have two main tables for my application (amongst several others but for all intents and purposes they aren't needed). One is "albums" and the other "photos".

Here's the structure for both:
Code: [Select]
Albums

CREATE TABLE IF NOT EXISTS `kill4silence_photos_albums` (
  `id` int(255) NOT NULL AUTO_INCREMENT,
  `parent_id` int(255) NOT NULL,
  `user_id` int(255) NOT NULL,
  `cover` int(255) NOT NULL,
  `name` varchar(50) NOT NULL,
  `description` text NOT NULL,
  `location` varchar(255) NOT NULL,
  `time` varchar(50) NOT NULL,
  `date` varchar(50) NOT NULL,
  `timestamp` int(255) NOT NULL,
  `last_updated_date` varchar(50) NOT NULL,
  `last_updated_time` varchar(50) NOT NULL,
  `last_updated_timestamp` int(255) NOT NULL,
  `views` int(255) NOT NULL,
  `tags` longtext NOT NULL,
  `downloads` int(255) NOT NULL,
  `download_disabled` int(1) NOT NULL,
  `comments_disabled` int(255) NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=MyISAM  DEFAULT CHARSET=latin1 AUTO_INCREMENT=156 ;

-----------------------------------------------------------------------------------------
Photos

CREATE TABLE IF NOT EXISTS `kill4silence_photos_photos` (
  `id` int(255) NOT NULL AUTO_INCREMENT,
  `album_id` int(255) NOT NULL,
  `user_id` int(255) NOT NULL,
  `name` varchar(50) NOT NULL,
  `caption` varchar(200) NOT NULL,
  `time` varchar(50) NOT NULL,
  `date` varchar(50) NOT NULL,
  `timestamp` int(255) NOT NULL,
  `file_name` varchar(5000) NOT NULL,
  `file_type` varchar(100) NOT NULL,
  `file_ext` varchar(25) NOT NULL,
  `location` varchar(200) NOT NULL,
  `photo_time` varchar(50) NOT NULL,
  `photo_date` varchar(50) NOT NULL,
  `views` int(255) NOT NULL,
  `tags` longtext NOT NULL,
  `downloads` int(255) NOT NULL,
  `downloads_disabled` int(1) NOT NULL,
  `comments_disabled` int(1) NOT NULL,
  `visible` int(1) NOT NULL,
  `last_updated_date` varchar(50) NOT NULL,
  `last_updated_time` varchar(50) NOT NULL,
  `last_updated_timestamp` int(255) NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=MyISAM  DEFAULT CHARSET=latin1 AUTO_INCREMENT=204 ;

Now basically how this works is when a new album is created, it is given a parent_id of '0' where the parent_id is the identifer of it's "parent" album.

Say, I have five albums, each nested within each other like so.

1, 2, 3, 4, 5.

On the page, it would look like,

Album 1 (link that takes you to Album 2)

Album 2 (link that takes you to Album 3)

And so on...

I use $_GET to send you to the next nested album.

Each album's query string looks like this:
Code: [Select]
photos.php?album={$id}

No matter what album you're in (be it the "father" parent album or a nested album)

Now, what I want to do is construct a method to add to my "photos" class, that creates an array of all parent album id's depending on the current nested album, so I can use that array to display a "navigation" type thingy-ma-jigger at the top of each page. For example:

Current album is "Ghosts"

Navigation would look like: Paranormal Activity -> Experiences -> Ghosts

Where "Ghosts" and "Experiences" are albums nested in "Paranormal Activity"

I figure you'd have to go about this using a loop of some kind, but I can't for the life of me figure it out. The only thing I can think of to do that doesn't entirely solve this problem is get the parent id of the current album. So as of right now, if "Ghosts" is currently being displayed, I can output a link taking you to "Experiences", but I can't do so to get "Paranormal Activity". I mean I could, but I'd have to loop through twice to get both ID's. I need a method that will loop through infinitely until there are no more parent albums to be found.

Hope this all makes sense.

Here's my code for viewing an album, just so you can get a clear picture (I'm using the Smarty extension case the HTML code confuses you)
Code: [Select]
<div id='view_album'>
    <!--<a href='photos.php?album={$PARENT_ALBUM_ID}'>&laquo; Back to {$PARENT_ALBUM_NAME}</a>-->
    <div class='album_name'>
        {$ALBUM_NAME}
    </div>
    <div class='album_info'>
        Created by <a href=''>{$USERNAME}</a> (<a href="photos.php?album={$PARENT_ALBUM_ID}">{$PARENT_ALBUM_NAME}</a>) {$DATE_FANCY} &bull; Updated {$LAST_DATE_FANCY}
        {if strlen($LOCATION) > 0}
         &bull; Taken at {$LOCATION}
        {/if}
        {if $smarty.const.PHOTOS_ADMIN_ACCESS == true}
         &bull; <a href='photos.php?album={$ALBUM_ID}&action=edit'>Edit Album</a>
         &bull; <a href='photos.php?album={$ALBUM_ID}&action=delete'>Delete Album</a>
         &bull; <a href='photos.php?album={$ALBUM_ID}&action=upload&max=1&submit=false'>Upload Photos</a>
        {/if}
    </div>

<!--Start albums-->
    {$i= 0}
    {$max_columns = 5}
    {$column_width = 100 / {$max_columns}}
    <table width='100%'>
        {foreach $ALBUMS_ARRAY as $id => $id}
        {if $i == 0}
            <tr>
            {/if}
                <td width='20%' align='center'>
                    <div class='album_graphic_container'><a href='photos.php?album={$id}'>
                    {if {albums::info ("id", "=", {$id}, "cover")} == 0}
                            <a href="photos.php?album={$id}"><img src='photos/images/icons/album_default.png'></a>
                        {else}
                        <img src='photos/covers/{$id}/default.jpg' style="width: 100%;"/>
                        {/if}
                    </div>
                    <div class='album_graphic_info'>
                        <a href='photos.php?album={$id}'>{albums::info ("id", "=", {$id}, "name")}</a>
                        <br>
                        {albums::info ("id", "=", {$id}, "num_albums")} Albums &bull; {albums::info ("id", "=", {$id}, "num_photos")} Photos
                        <br>
                        <a href='' style='font-size: 100%;'>{albums::info ("id", "=", {$id}, "num_comments")} Comments</a>
                    </div>
                </td>
            {$i = $i + 1}
            {if $i == $max_columns}
                </tr>
                {$i = 0}
            {/if}
        {/foreach}
        {if $i < $max_columns}
            {$j = 0}
            {for $k = $i; $k < $max_columns - 1; $k++}
                {if $j == 0}
                    <td width='{$column_width}%' align='center'>
                        <div class='album_graphic_container'>
                            <a href='photos.php?album={$ALBUM_ID}&action=compose'>
                            <img src='photos/images/icons/album_default.png'>
                            </a>
                        </div>
                        <div class='album_graphic_info'>
                            <a href='photos.php?album={$ALBUM_ID}&action=compose'>+ Add New Album</a>
                            <br>
                            &nbsp;
                            <br>
                            &nbsp;
                        </div>
                    </td>
                {/if}
                {$j = 1}
                <td width='{$column_width}%' align='center'>&nbsp;</td>
            {/for}
        {else}
        {/if}
</table>

<!--Start photos-->
    <div class='view_album_lft'>
        {if {albums::info ("id", "=", {$ALBUM_ID}, "num_photos")} == 0}
        &nbsp;
        {else}
            <!--<div class='view_album_photos_header'>";
            Photos In <a href=''>" . albums::info ("id", "=", $_GET["album"], "name") . "</a> (" . albums::info ("id", "=", $_GET["album"], "num_photos") . ")";
            </div>";-->
            {$p = 0}
            {$p_max_columns = 6}
            {$p_column_width = 100 / $p_max_columns}
            <table width='100%'>
                {foreach $PHOTOS_ARRAY as $id => $id}
                {if $p == 0}
                    <tr>
                    {/if}
                    <td width='{$p_column_width}%' align='center'>
                        <div class='album_graphic_container'>
                        <a href='photos.php?album={$ALBUM_ID}&photo={$id}'><img src='{photos::info ("id", "=", $id, "src_thumb_medium")}' style='width: 100%;'></a>
                        </div>
                        <div class='album_graphic_info'>
                            {photos::info ("id", "=", {$id}, "views")} Views
                            <br>
                            {photos::info ("id", "=", {$id}, "num_comments")} Comments
                        </div>
                    </td>
                    {$p = $p + 1}
                    {if $p == $p_max_columns}
                        </tr>
                        {$p = 0}
                    {/if}
                {/foreach}
                {if $p < $p_max_columns}
                    {for $q = $p; $q < $p_max_columns; $q++}
                        <td width='{$p_column_width}%'>&nbsp;</td>
                    {/for}
                {/if}
            </table>
        {/if}
    </div>
   
    <div class='album_info_2_lft'>
        {if {likes::determine ("album", {$ALBUM_ID}, $smarty.const.PHOTOS_USER_LOGGED)} == -1}
            {$NUM_LIKES} Likes &bull; <a href="photos.php?album={$ALBUM_ID}&action=like">Like this album</a> | {$NUM_DISLIKES} Dislikes &bull; <a href="photos.php?album={$ALBUM_ID}&action=dislike">Dislike this album</a>
        {/if}
        {if {likes::determine ("album", {$ALBUM_ID}, $smarty.const.PHOTOS_USER_LOGGED)} == 1}
            {$NUM_LIKES} Likes &bull; <a href="photos.php?album={$ALBUM_ID}&action=unlike">Unlike this album</a> | {$NUM_DISLIKES} Dislikes &bull; <a href="photos.php?album={$ALBUM_ID}&action=dislike">Dislike this album</a>
        {/if}
        {if {likes::determine ("album", {$ALBUM_ID}, $smarty.const.PHOTOS_USER_LOGGED)} == 0}
            {$NUM_LIKES} Likes &bull; <a href="photos.php?album={$ALBUM_ID}&action=like">Like this album</a> | {$NUM_DISLIKES} Dislikes &bull; <a href="photos.php?album={$ALBUM_ID}&action=undislike">Undislike this album</a>
        {/if}
    </div>
    <div class='album_info_2_rt'>
    {$DOWNLOADS} Downloads &bull; <a href="photos.php?album={$ALBUM_ID}&action=download">Download this album</a>
    </div>
    <br clear="all" />

    <!--<div class='view_album_rt'>
        <div class='view_album_rt_header'>
            Share This Album
        </div>
        <div class='view_album_rt_header'>
            Download This Album
        </div>
        <a href=''>Low Quality ({albums::info ("id", "=", {$ALBUM_ID}, "album_size_low")})</a>
        <br>
        <a href=''>Medium Quality ({albums::info ("id", "=", {$ALBUM_ID}, "album_size_medium")})</a>
        <br>
        <a href=''>High Quality ({albums::info ("id", "=", {$ALBUM_ID}, "album_size_high")})</a>
        <br>
        <a href=''>Full Size Quality ({albums::info ("id", "=", {$ALBUM_ID}, "album_size_full")})</a>
    </div>
   
    <br clear='all'>-->
   
    <div class='view_album_comments_container'>
        <div class='view_album_comments_header'>
            All Comments ({$ALBUM_NUM_COMMENTS})
        </div>
   
        <div class='view_album_comments_add'>
            {if !{$PHOTOS_USER_LOGGED}}
                You must <a href='login.php'>login</a> or <a href='register.php'>sign up</a> in order to post comments
            {else}
                {if $COMMENTS_DISABLED == 0}
                    <div class='view_album_comments_single_wrapper'>
                        <div class='view_album_comments_single_lft'>
                            <img src='members/{users::info ($smarty.const.PHOTOS_MEMBERS_FIELD_ID, "=", $smarty.const.PHOTOS_USER_ID, "avatar_src")}'>
                        </div>
                        <div class='view_album_comments_single_rt'>
                        <form action='photos.php?album={$ALBUM_ID}&comment=new&action=add' method='post'>
                            <input type='hidden' name='parent_id' value='0' />
                            <textarea name='body' placeholder="Write your response" class='view_album_comments_add_textarea'></textarea>
                            <span style="float: right;"><input type="submit" class="fb_button_blue" value="Post Comment" /></span>
                            </form>
                        </div>
                        <br clear='all'>
                    </div>
                {else}
                    Comments for <a href=''>{$ALBUM_NAME}</a> has been disabled
                {/if}
            {/if}
        </div>

        {foreach $COMMENTS_ARRAY as $id => $id}
            <div class='view_album_comments_single_wrapper'>
                <div class='view_album_comments_single_lft'>
                    <img src='members/{users::info ($smarty.const.PHOTOS_MEMBERS_FIELD_ID, "=", {comments::info ("id", "=", {$id}, "user_id")}, "avatar_src")}'>
                </div>
                <div class='view_album_comments_single_rt'>
                    <div class='view_album_comments_single_rt_username'><a href=''>{comments::info ("id", "=", {$id}, "username")}</a></div>
                    <div class='view_album_comments_single_rt_body'>{comments::info ("id", "=", {$id}, "body")}</div>
                    <div class='view_album_comments_single_rt_info'>
                        {comments::info ("id", "=", {$id}, "date_fancy")}
                        &bull; <a href="">Like</a> | <a href="">Dislike</a>
                        {if $smarty.const.PHOTOS_USER_LOGGED == true}
                            {if $smarty.const.PHOTOS_ADMIN_ACCESS || $smarty.const.PHOTOS_USER_ID == {comments::info ("id", "=", {$id}, "user_id")}}
                                &bull; <a href="">Delete</a>
                            {/if}
                        &bull; <a href="">Report</a>
                       {/if}
                    </div>
                </div>
                <br clear="all" />
            </div>
        {/foreach}
       
        <div id='view_album_comment_report'>
        <div id='view_album_comment_report_body'>
            <span class='view_album_comment_report_body_header'>Report Comment</span>
            </div>
        </div>
       
    </div>
   
</div>

Need more info, just ask. Thanks.

hello. i have a list that is pulling info from a db but the sub levels are not showing correctly.


basically there are titles that could be in any order
then under each title there are lists that could be in any order
then some of the lists might also have nested lists which could be in any oder.


its not the full html yet but I'm stuck because it echoes out the titles fine but the links are not being listed under each title. all the links are being listed under the first title only.


Code: [Select]

$PCa = PageContent::find_by_pageContID($PCidA);

foreach ($PCa as $PCas) {
$title = $PCas->title;
$link = $PCas->link;

echo'
<div class="arrowlistmenu">';
if (!empty($title)) {
echo'
<h3 class="menuheader expandable">'."{$title}".'</h3>';
}
if (!empty($link)) {
echo'
<ul class="categoryitems">
<li><a href="#">'."{$link}".'</a></li>
</ul>';
}
echo'</div>';
}







this is an example of the html.

Code: [Select]
<div class="NAV">

<h3>CAT TITLE</h3>

<ul class="CAT ITEM">
<li><a href="#">LINK</a></li>
</ul>

<h3>CATT TITLE</h3>
<ul class="CAT ITEM">
<li><a href="#">LINK</a></li>
<li><a href="#" class="SUB CAT">NESTED LEVEL TITLE</a>
<ul class="SUB CAT ITEM" style="margin-left: 15px">
<li><a href="#">LINK</a></li>
</ul>
</li>
<li><a href="#">LINK</a></li>
</ul>

</div>




thanks

I get the error:
Parse error: syntax error, unexpected T_ENCAPSED_AND_WHITESPACE, expecting T_STRING or T_VARIABLE or T_NUM_STRING in D:\mypubspace.com\wwwroot\phpsite\pubs.php on line 95

Code: [Select]
$towns  = "SELECT DISTINCT rsTown, COUNT(PubID) As PubCount FROM pubs GROUP BY rsTown  ORDER BY rsTown ASC";
$townresult = mysql_query($towns) or die(mysql_error().'<br>SQL: ' . $towns);


echo <<<EOF
<form name="form3" method="post" action="">
<select name="menu2" onChange="MM_jumpMenu('parent',this,0)" class="textbox">
<option value="">Please choose a town!</option>
while($row1 = mysql_fetch_array($townresult)){
<option value="pubs_norm1.asp?rsTown='$row1['RSTOWN'];'">
Pubs and bars in $row1['RSTOWN']; ($row1['RSTOWN'];)</option>
}
</select>
</form>
EOF;

Please help

Code: [Select]
//this varible contains the array of existing users
$existing_users=array('roshan','mike','jason');
//value got from the get metho
$user_name=$_POST['user_name'];
//checking weather user exists or not in $existing_users array
if (in_array($user_name, $existing_users))
{
 //user name is not available
 echo "no";
}
else
{
  //username available i.e. user name doesn't exists in array
  echo "yes";
}

the array near the top has a list of users, I would like to loop through my users in my database
I know how to write a loop but not into here

Code: [Select]
$existing_users=array('roshan','mike','jason');

I've searched but can't seem to find anything I can apply to this situation.  Most of the resources are dedicated to dropdown menu's from the same table. 

I have two tables 'regions' and 'cities' and I am looking to create a menu that lists all the cities within a region then moves on to do the same for the rest of the regions in that state:

State1
Region1
City1
City2
City3
Region2
City1
City2
City3
Region3
Etc

My tables:
States table: stateID, state
Regions table: regionID, region, stateID
Cities table: cityID, city, regionID

I currently have two pages- select region, then select city... I'd like to consolidate to one step after choosing a state.

I know I need a nested loop, (while?), and to count the results somehow to retrigger loop; also not sure how to handle two mySQL querries in the nested loop.  I'm having trouble wrapping my mind around it. Thank you.

I am trying to make a loop simply write "static" code...if that is the correct explanation....  But it seems PHP wants to "process" such things as 'IF' and other Conditions which is defeating the purpose.

The problem specifically is that I NEED for a dynamic write to happen based on a variable  that will put the following lines
that start with IF (! isset


 

 // Make sure the checkbox arrays exist 

 if (! isset($_POST['cp_checkbox_one'])) $_POST['cp_checkbox_one'] = array();
 if (! isset($_POST['cp_checkbox_two'])) $_POST['cp_checkbox_two'] = array();
 if (! isset($_POST['cp_checkbox_three'])) $_POST['cp_checkbox_three'] = array();


//    here in the lines below is one way I have tried to make the the LINES ABOVE get written Dynamically
//    THIS PART returns the values I need, the checkbox names ----  
//
//    foreach($_POST as $meta_key => $meta_value) {
// if(cp_str_starts_with($meta_key, 'cp_checkbox')) { echo $meta_key; }
//    } 

//  So that code WILL RETURN THE VALUES I NEED : 
//  cp_checkbox_one, cp_checkbox_two, cp_checkbox_three

//   BASED ON THIS I WROTE THE FOLLOWING CODE-- BUT IT DOES NOT WORK AS A REPLACEMENT FOR A LINE
//  SUCH AS---  if (! isset($_POST['cp_checkbox_one'])) $_POST['cp_checkbox_one'] = array();

//  

function checkboxloop() {
foreach($_POST as $meta_key => $meta_value) {
if(cp_str_starts_with($meta_key, 'cp_checkbox')) { 
if (! isset($_POST[$meta_key]))  $_POST[$meta_key] = array();
    }
  }
}

//  HERE I ASK FOR THE FUNCTION BUT WHILE I GET NO ERRORS I GET NO RESULTS
//  WHICH IS A PROPER SAVE OF UNCHECKED CHECKBOXES ON SUBMIT

checkboxloop;




I would very much appreciate knowing how to make the code keep looping whatever $meta_key names turn up on this page and then use those names to write the complete lines as STATIC PHP so that the IF conditions don't get "processed" while this function is called.

In effect, I want to duplicate the effect of having the code lines WRITTEN, so that they perform exactly as if I had written them as PHP hard-code, as many lines as there will be $meta_keys, but not SEE the code--- just have it valid PHP.  This function does NOT make the same thing happen internally.  As soon as I replace the function with the HARD CODE PHP then it works...but, I have reached the stage where these lines of code have to happen dynamically.

I am baffled how to get this to happen!  If I use Echo then I get errors about the "IF".

Thank you very much for your help!

Say I have two areas of a website. 

1 - root directory (index, sign up, sign in)

2 - folders (this would contain folders such as snippets, members, assets)

Due to the nature of the folders, the links cannot be the same as they are on the pages in the root directory. Index page for example.  So if I'm on members/dashboard.php, any a links linking to index.php, will have to have "../" in front of them. To solve the issue, my current set up is like this. But I understand it's not the most efficient way to do this. I was wondering if you can share your expertise for a better method.

$currentPage = basename($_SERVER['PHP_SELF'], ".php");

<?php if($currentPage == 'index' || $currentPage == 'members') { ?>

	<!DOCTYPE HTML>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<meta http-equiv="X-UA-Compatible" content="IE=edge">
		<meta name="description" content="">
		<link rel="shortcut icon" href="images/favicon.ico.png">
		<link href="css/screen.css" media="screen" rel="stylesheet" />
	</head>
	<body>
    <a href="index">
      <img src="images/logo.PNG" alt="logo" />
    </a>
  </body>

<?php } else { ?>  

  <!DOCTYPE HTML>
  <head>
    <meta charset="UTF-8">
    <title></title>
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="description" content="">
    <link rel="shortcut icon" href="../images/favicon.ico.png">
    <link href="../css/screen.css" media="screen" rel="stylesheet" />
  </head>
  <body>
    <a href="../index">
      <img src="../images/logo.PNG" alt="logo" />
    </a>
  </body>

<?php } else { ?>