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Subject:
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How to use $_GET with arrays?
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Posted By:
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pseudo class
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Post Date:
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10/25/2004 9:43:20 PM
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I'm on chapter 3 of the book and I just need to know how to echo variables like $enginesize[0], $enginesize[1], etc..etc.. with register_globals shut off.
Thanks in advance
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Reply By:
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Snib
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Reply Date:
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10/26/2004 12:16:40 PM
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Try $_GET['enginesize'][0], etc.
HTH!
-Snib
Where will you be in 100 years?
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Reply By:
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pseudo class
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Reply Date:
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11/1/2004 10:32:36 PM
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that didnt work for me either, do you mean like
echo . $_GET['enginesize'][0]
echo . $_GET['enginesize'][1]
echo . $_GET['enginesize'][2]
etc...etc
b/c that didnt work for me.
Thanks in advance
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Reply By:
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richard.york
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Reply Date:
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11/2/2004 7:09:10 AM
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$_GET works if the method of the form is the get method. I'm betting that the method of the form is probably post, whereas you should use the $_POST superglobal.
$_POST['enginesize'][0]
If you're still not getting anywhere do something like this to see if anything is being passed.
echp "<pre>";
var_dump($_POST);
echo "</pre>";
HTH!
Regards,
Rich
--
[http://www.smilingsouls.net]
[http://pear.php.net/Mail_IMAP] A PHP/C-Client/PEAR solution for webmail
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Reply By:
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Tim Gamble
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Reply Date:
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11/20/2004 11:56:21 AM
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quote:
Originally posted by richard.york
$_GET works if the method of the form is the get method. I'm betting that the method of the form is probably post, whereas you should use the $_POST superglobal.
$_POST['enginesize'][0]
If you're still not getting anywhere do something like this to see if anything is being passed.
echp "<pre>";
var_dump($_POST);
echo "</pre>";
HTH!
Regards,
Rich
--
[http://www.smilingsouls.net]
[http://pear.php.net/Mail_IMAP] A PHP/C-Client/PEAR solution for webmail
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Reply By:
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Tim Gamble
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Reply Date:
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11/20/2004 12:10:03 PM
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quote:
Originally posted by Tim Gamble
quote:
Originally posted by richard.york
I'm having the same problem with the arrays in chapter 3 with the register_globals turned off. I took your suggestion and checked the method and it was set as GET but am still not able to echo more than one variable. Here is the code for listbox.html
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="content-type" content="text/html;charset=iso-8859-1">
<title>List Boxes</title>
</head>
<body bgcolor="#ffffff">
<form id="FormName" action="listbox.php4" method="GET" name="FormName">
What price car are you looking to buy? <select name="Price" size="4" multiple>
<option>Under $5,000</option>
<option>$5,000-$10,000</option>
<option>$10,000-$25,000</option>
<option>Over $25,000</option>
</select><br>
<p>What size engine would you consider? <select name="EngineSize[]" size="4" multiple>
<option>1.0L</option>
<option>1.4L</option>
<option>1.6L</option>
<option>2.0L</option>
</select><br>
<br>
<input type="submit" name="submitButtonName" value="Let me know"><br>
</p>
</form>
</body>
</html>
and here is the code for listbox.php4
<html>
<head>
<meta http-equiv="content-type" content="text/html;charset=iso-8859-1">
<title>agl:pagetitle</title>
</head>
<body bgcolor="#ffffff">
<p></p>
You chose <br>
<?php
echo $_GET['Price'];
?>
<br>
<?php
echo $_GET['EngineSize'][0];
?>
</body>
</html>
The code will only returrn the last item selected in the EngineSize list.
Can you suggest anything else?
Tim
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Reply By:
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richard.york
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Reply Date:
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11/20/2004 1:06:27 PM
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Ok, the problem with multiple select fields is the there isn't a way to see if option 4 is checked, versus say option 1, you can only look at the value.
For this example a foreach loop is most appropriate.
<?php
echo "<strong>The values of 'enginesize' are:</strong><br />\n";
if (isset($_GET['enginesize']) && is_array($_GET['enginesize']))
{
foreach ($_GET['enginesize'] as $value)
{
echo $value."<br />\n";
}
}
else
{
echo "You didn't enter any values for 'enginesize'!<br />\n";
}
?>
The foreach loop is designed specifically for arrays, in this case $_GET['enginesize'] is a multidimensional array, so it itereates through each value contained in it, when running this you'll see that only the selected values are output.
HTH!
Regards,
Rich
--
[http://www.smilingsouls.net]
Mail_IMAP: A PHP/C-Client/PEAR solution for webmail
Author: Beginning CSS: Cascading Style Sheets For Web Design
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