PHP - Foreach Question

I am having trouble understanding what this means:

foreach($_SESSION['cart'] as $product_id => $quantity) 

I look forward to any responses in advance.

This is more of a technical question that i could not find the answer to pn the php.net manual pages.

take the folowing example code:



foreach ($array as $key => $value){

$tempvariable = some_property_of($value);

}

unset($tempvariable);


is that unset statement needed?  Does PHP automatically destroy the variables once the foreach loop is left?

hey guys!

Im trying to get hashtags out of a string.
The function works so far- but i cant transfer the insides of the preg_match_all array into the string.

A hint would be fine already.

Thanks in advance- and here is some code


Code: [Select]
<?php
//example string
$strcontent = "ima string... #wat #taggy #taggytag im in your stringz, stealing your charz!";
  
//find hashtags
preg_match_all("/(#\w+)/", $strcontent, $matches);
echo $matches;            //the output is just "array" -> why?
foreach ($matches as $match)
{
//  $tempmatch=$match[1]; #####like this?
        //hiding the hashtags via span
$strtemp="<br>ima span<br>" . $match . "<br>ima /span<br>" . $strcontent;
$strcontent = $strtemp;
echo $strcontent;
}
#echo $strcontent;
  
  # <span style="display:none;"></span>  
?>

This topic has been moved to Application Frameworks.

http://www.phpfreaks.com/forums/index.php?topic=355772.0

I'm not sure if the title explains it very well, but here is an image of it. I am trying to figure out how to access the option selected (equal, not equal, etc.), along with its input box, for each column (the checkboxes on the right) selected. The purpose of this is to allow a non-programming administrator user to create a custom query to access information. I can find out which checkboxes are selected no problem, but finding the accompanying drop-down option and input box is difficult for me. How do I do this?

If you have a suggestion on how to change it, I'm very open. Thank you in advance!



Code: [Select]
if(!isset($_POST['submit']))
{
echo "
<form method='post'>
<table>
 <tr>
  <td valign='top'>SELECT</td>
  <td valign='top'>
   <table>";
 
// LIST ALL COLUMNS IN A TABLE
$result = mysql_query("SELECT * FROM table_name") or die(mysql_error());
$rowcount=mysql_num_rows($result);
$y=mysql_num_fields($result);
for ($x=0; $x<$y; $x++)
{ echo "
    <tr>
<td>
  <input type='checkbox' name='fields[]' value='".mysql_field_name($result, $x)."'>".mysql_field_name($result, $x)."
     </td>
</tr>"; }
 
   echo "
   </table>
  </td>
  <td valign='top'>FROM allocations</td>
  <td valign='top'>WHERE</td>
  <td>
   <table>";
   
// LIST ALL COLUMNS IN A TABLE
$result = mysql_query("SELECT * FROM table_name") or die(mysql_error());
$rowcount=mysql_num_rows($result);
$y=mysql_num_fields($result);
for ($x=0; $x<$y; $x++)
{ echo "
    <tr>
<td>
  <input type='checkbox' name='column[]' value='".mysql_field_name($result, $x)."'>".mysql_field_name($result, $x)."
</td>
<td>
  <select name='operator[]'>
          <option value='='>equals</option>
          <option value='<>'>does not equal</option>
          <option value='>'>greater than</option>
          <option value='<'>less than</option>
          <option value='>='>greater than or equal to</option>
          <option value='<='>less than or equal to</option>
          <option value='LIKE'>is like</option>
         </select>
</td>
     <td><input type='text' name='criteria[]'></td>
</tr>"; }

   echo "
   </table>
  </td>
  <td valign='top'><input type='submit' value='Process Query' name='submit' class='submit'></td>
 </tr>
</table>
</form>";
}
else
{
 echo "<b>Fields to edit:</b> ";
foreach ($_POST['fields'] as $fields) {
echo $fields,", ";
}

 echo "<br><br>";
 echo "<b>Columns to query:</b> ";
foreach ($_POST['column'] as $columns) {
echo $columns," HERE IS THE SPOT, ";
}
}

Hi!

When I echo $m below, it will show all selected options fine.
Instead, I want it to show many I selected.

So if I selected 3 in dropdown, I want it to say I selected 3 instead of showing their values.

      $allmaps=$_POST['maps'];
       foreach ($allmaps as $m) { echo 'm = '.$m.''; }

<select name="maps[]" multiple>'.$maps.'</select>

Hi i am trying to pass values from a cart to a database using foreach.

This is my code:
Code: [Select]
$columns = array('order_id', 'order_item_id', 'order_product_name', 'order_product_dimensions', 'order_product_options', 'order_product_quantity', 'order_product_price', 'order_product_subtotal', 'order_product_vat', 'order_product_delivery','order_product_total','order_product_sku','order_product_image_name','order_product_image_type','order_product_image_path','order_product_image_size','order_product_artwork_link','order_product_artwork_name','order_product_artwork_type','order_product_artwork_path','order_product_artwork_size','order_firstname','order_lastname','order_companyname','order_email','order_tel','order_billing_address','order_billing_address2','order_billing_town','order_billing_county','order_billing_postcode','order_shipping_address','order_shipping_address2','order_shipping_town','order_shipping_county','order_shipping_postcode','order_status','order_username');
$data = array_fill_keys($columns, 'NULL');

foreach($data as $key => $value) {

$data[$key] = empty($_POST[$key]) ? 'NULL' : "'".mysql_escape_string($_POST[$key])."'";
$query = "INSERT INTO orders (id, order_created_at, ".implode(", ",$columns).")
VALUES (null, NOW(), ".implode(",",$data).')';

}

Problem is posting 2 or more products into the database.

How do i split the values so it enters each product into the database?

i have a table that echos 10 entries what i want to do is once it echos 5 records it starts a new table. I dont know how to go about this. Could you guys guide me the right way.

Hi All,

I essentially am trying to figure out how to print out all of the zip codes that are associated with a search that I am doing, but not list the same zip code more than once.  My current foreach statement is as follows and prints out the zip code for each property that is associated with the search:

<ul>

<?php
foreach($properties as $property) {
?>

      <li><?=$property->$zipcode?></li>

<?php
   }
?>

</ul>

How would I modify this to print out 1 occurrence of each zip code that is in the search, even if, for example 20 properties have the same zip code?

Thanks in advance!

P.S. - Tried using an array to work with it but pretty sure my logic was incorrect when putting it together and couldn't get past the errors.  Anyways, thanks in advance for the help!

why does wordpress is using foreach rather than while in listing records?

common
Code: [Select]
while ($products = mysql_fetch_object($rs) {
...
}

but wordpress is using foreach
Code: [Select]
foreach ($posts as $post) {
...
}

which is better? because i'm trying to create my own code for database connection.

Hi can any one help please im still very new but hard trying

The problem is that i only get 1 result back from the database i need it to loop any ideas please
Code: [Select]

$query = mysql_query("SELECT * FROM categorys, sub_categorys WHERE categorys.cat_id = sub_categorys.cat_id");
       
echo "<ul>";
$row[] = mysql_fetch_array($query);
  foreach($row as $category){
                  echo "<li>";
              echo $category['category'];

      foreach($row as $sub_category){
          if($category['cat_id'] == $sub_category["cat_id"]){
      echo "<ul><li>".$sub_category["sub_category"]."</li></ul>";
          }
       }
            echo "</li>";
                }
              echo "</ul>";

today i programmed my own weight calculator.
one thing i am having a problem is with trying to make it so if a weight is over a certain number, then the shipping price will increase by X.
shipping prices are charged in 20000 gram blocks, so if I have something that is 22000 grams then that will be two blocks. what i need to do is something like (this is a big guess)

Quote

$row3 = 50;
$weighttotal = 22000;
if ($weighttotal > 20000) {
   foreach (20000) {
      $row3 += $row3;}
      }
   }
}


can it be done on php??

In the code I want to proceed to the next step only after stripslashes and strip_tags are completed. How do I put the code below with if?

$stripped = array('name', 'location', 'bio');

foreach ( $_POST as $k => $v ) {
    if ( in_array($k, $stripped) ) {
        ${$k} = strip_tags($v);
    }
} 

foreach ( $_POST as $p => $q ) {
    if ( in_array($p, $stripped) ) {
        ${$p} = stripslashes($q);
    }
}

Thanks,
Ruth.

I appear to be having a simple simon day!

my foreach is only displaying the last result in the table as opposed to each row
$num_rows = mysql_num_rows($query);
echo "There are $num_rows records.<br>";

while($row = mysql_fetch_row($query))

foreach ($row as $field)

{ 

echo '<div class="results">';

echo  $field;

echo '<br></div>'; 

}

And the source


Code: [Select]
<link href="../styles/clientbox.css" rel="stylesheet" type="text/css">

<body><br>



<h3>My Services</h3>

<div class="text">

You currently have the following services with us:

</div>

There are 2 records.<br><div class="results">test1<br></div>


</body>

</html>
My table has 2 rows which the 1st one has a package of test and the second a package of test1


Can anyone help?

Thanks

Noob question. I've learned so much in the last couple of weeks that I've actually found two ways of doing the same thing!  I was wondering which was the better method, if there is any difference. They are being used to print somewhere between 10 and 200 lines of text.

Either:
$categories_count= (count($categories[1])) -1;
for ($u=0; $u < $categories_count; $u++) {echo "<li>".$categories[1][$u]."</li>";}
Or:
foreach ($categories[1] as $line => $cat)  {echo "<li>".$cat."</li>";};