[SOLVED] echo to specific location from function

[aebstract]

I have this:

$showCart = showCart();
$content .= "<div id=\"full_content\">
Shopping Cart<br />
$showCart
</div>";

 

How can I have lines of code in my showCart(); ehcho out in to my div where I have $showCart displayed?

[DeanWhitehouse]

like

$showCart(0);

 

or use a foreach loop

[aebstract]

My function for showCart:

function showCart() {
global $db;

echo "<pre><div style=\"text-align: left;\">";
print_r ($_SESSION['cart']);
echo "</div></pre>";




if (isset($_SESSION['cart'])) {

      	  print '<form action="index.php?page=cart&action=update" method="post" id="cart">';

  foreach ($_SESSION['cart'] as $id => $array2){
  foreach ($array2 as $material => $array3){

$result = mysql_query("SELECT * FROM p_products WHERE id='$id'") or DIE(mysql_error());

	while($r=mysql_fetch_array($result))
	{

	$partnumber=$r["partnumber"];
	$partname=$r["partname"];
	$description=$r["description"];
	$category=$r["category"];
	$price=$r["price"];

	}




echo "
<table width=\"590\" style=\"border-top: 1px solid #000;\">
<tr>
<td width=\"100\"><img src=\"products/$partnumber-cart.jpg\" class=\"jkimagelarge\" title=\"products/$partnumber.jpg\" /></td>
<td width=\"350\">
$partname<br />
$partnumber<br />
$price / each<br />
Material: $material
</td>
<td width=\"60\"><input type=\"text\" name=\"qty$id\" value=\"{$array3['qty']}\" size=\"3\" maxlength=\"3\" /></td>
<td width=\"80\">$($price * {$array3['qty']})</td>
</tr>





</table>

";


    }
}


     	 print '</form>';
} else {
     	 print '<p>You shopping cart is empty.</p>';
}


}

 

As you can see right now I am using echo/print to get the info out, but that's putting the information above all of my content of my website, when I want it to go under "Shopping Cart" where I have the variable $showcart at..

[DeanWhitehouse]

Try

 

$content .= "<div id=\"full_content\">

Shopping Cart<br />

".showCart()."

</div>";

 

Or the best way would be to remake the function

[aebstract]

That still displays it above everything instead of inside that div... which I'm thinking I need to use something other than echo to get this information out, anyone?

[DeanWhitehouse]

You can use return (in the function)

[aebstract]

I'm looking at what return does and I don't really see how that would do anything, mind showing a small example of this?

[DeanWhitehouse]

function returning()
{
   return "Code";
}

function echoing()
{
  echo "Code";
}

echo echoing()." <br> ".returning();

[aebstract]

Hmm, return seems weird to me.. but it worked Thanks

[premiso]

Return values are great. Let's say you want to do a math calculation. This would be an ideal way to do it:

 

<?php
$num1 = 5;
$num2 = 6;
$num3 = 3;

$returnVal = add($num1, $num2);
echo $num1 . " + " . $num2 . " = " . $returnVal . "<br />";
$returnVal2 = sub($returnVal, $num3);
echo $num3 . " - " . $returnVal . " = " . $returnVal2 . "<br />";

function add($val1, $val2) {
    return ($val1 + $val2);
}

function sub($val1, $val2) {
    return ($val1 - $val2);
}
?>

 

Hopefully that will help you understand the return. It allows the data to be assigned to a variable.

[aebstract]

Return ends the script, which causes everything that should be displayed after that function to not exist.. So I am thinking this isn't what I'm looking for? Here is what I have:

 

 

function in my functions.php

function showCart() {
global $db;






if (isset($_SESSION['cart'])) {

      	  print '<form action="index.php?page=cart&action=update" method="post" id="cart">';

  foreach ($_SESSION['cart'] as $id => $array2){
  foreach ($array2 as $material => $array3){

$result = mysql_query("SELECT * FROM p_products WHERE id='$id'") or DIE(mysql_error());

	while($r=mysql_fetch_array($result))
	{

	$partnumber=$r["partnumber"];
	$partname=$r["partname"];
	$description=$r["description"];
	$category=$r["category"];
	$price=$r["price"];

	}




return "
<table width=\"590\" style=\"border-top: 1px solid #000;\">
<tr>
<td width=\"100\"><img src=\"products/$partnumber-cart.jpg\" class=\"jkimagelarge\" title=\"products/$partnumber.jpg\" /></td>
<td width=\"350\">
$partname<br />
$partnumber<br />
$price / each<br />
Material: $material
</td>
<td width=\"60\"><input type=\"text\" name=\"qty$id\" value=\"{$array3['qty']}\" size=\"3\" maxlength=\"3\" /></td>
<td width=\"80\">$($price * {$array3['qty']})</td>
</tr>





</table>

";


    }
}


     	 print '</form>';
} else {
     	 print '<p>You shopping cart is empty.</p>';
}


}

 

 

 

my cart.php

$showCart = showCart(0);

$content .= "<div id=\"full_content\">

Shopping Cart<br />

$showCart

</div>";

[premiso]

It does not end the script persay, it just exits the function. If you want the function to continue, this would work and is actually better, imo, than just printing data onto the screen.

 

function showCart() {
global $db;

$output = "";
if (isset($_SESSION['cart'])) {

         $output .= '<form action="index.php?page=cart&action=update" method="post" id="cart">';

  foreach ($_SESSION['cart'] as $id => $array2){
  foreach ($array2 as $material => $array3){

$result = mysql_query("SELECT * FROM p_products WHERE id='$id'") or DIE(mysql_error());

      while($r=mysql_fetch_array($result))
      {

      $partnumber=$r["partnumber"];
      $partname=$r["partname"];
      $description=$r["description"];
      $category=$r["category"];
      $price=$r["price"];

      }

         $output .= "
<table width=\"590\" style=\"border-top: 1px solid #000;\">
<tr>
<td width=\"100\"><img src=\"products/$partnumber-cart.jpg\" class=\"jkimagelarge\" title=\"products/$partnumber.jpg\" /></td>
<td width=\"350\">
$partname<br />
$partnumber<br />
$price / each<br />
Material: $material
</td>
<td width=\"60\"><input type=\"text\" name=\"qty$id\" value=\"{$array3['qty']}\" size=\"3\" maxlength=\"3\" /></td>
<td width=\"80\">$($price * {$array3['qty']})</td>
</tr>
</table>";
    }
   }


         $output .= '</form>';
} else {
         $output .= '<p>You shopping cart is empty.</p>';
}

return $output;

}

 

You would be fine

[aebstract]

Ah, I get it Works like a charm. Thank you

[Maq]

You're making this more complicated then it should be.  Returns are a basic concept of most languages.  In your function have one variable called $return_string.  Just concatenate everything to it and return it at the end.  Then when you want to display everything just do:

 

echo showCart();

 

Just like premiso exemplified...