[RESOLVED] What exactly is an undefined index?

badgoat

Notice: Undefined index: city

I get these notice errors, and I am not sure why. What can I do to code corretly so these do not pop up? (I already know how to turn off notice errors, looking for some guidance as to what to do to not get them in the first place)

bbreslauer

Can you post the code where this occurs?

devinemke

it means that you are referencing an array index that does not exist.

$array = array(1,2,3,4,5);
echo $array['city']; // this will throw an error

badgoat

Certainly!


<?php

$connect= mysql_connect("@@@@","@@@@")
   or die("Could not connect to database in localhost !");
$result=mysql_select_db("testdiw")
   or die("Could not select that database !");

$crf=$HTTP_POST_VARS['crf'];
$crfaddr=$HTTP_POST_VARS['crfaddr'];
$city=$HTTP_POST_VARS['city'];
$state=$HTTP_POST_VARS['state'];
$zip=$HTTP_POST_VARS['zip'];
$crfphone=$HTTP_POST_VARS['crfphone'];
$website=$HTTP_POST_VARS['website'];
$scheduler=$HTTP_POST_VARS['scheduler'];
$schedphone=$HTTP_POST_VARS['schedphone'];
$schedcellphone=$HTTP_POST_VARS['schedcellphone'];
$schedemail=$HTTP_POST_VARS['schedemail'];


 ?>

<TABLE>
<form name="form3" method="post" action="crf_added.php">

<TR>
		<TD>Court Reporter Firm Name:</TD>
		<TD><input type=text name="crf" size=40></TD>
</TR>
<TR>
		<TD>Street Address:</TD> 
		<TD><input type=text name="crfaddr" size=40></TD>
</TR>
<TR>
		<TD>City:</TD> 
		<TD><input type=text name="city" size=20></TD>
</TR>

<TR>
		<TD COLSPAN=2><input type="submit" name="Submit" value="Submit" action="required"></TD></FORM>
		</TR>
</TABLE>	
</body>
</html>

Rodney_H_

badgoat wrote:


<?php

$crf=$HTTP_POST_VARS['crf'];
$crfaddr=$HTTP_POST_VARS['crfaddr'];
$city=$HTTP_POST_VARS['city'];
$state=$HTTP_POST_VARS['state'];
$zip=$HTTP_POST_VARS['zip'];
$crfphone=$HTTP_POST_VARS['crfphone'];
$website=$HTTP_POST_VARS['website'];
$scheduler=$HTTP_POST_VARS['scheduler'];
$schedphone=$HTTP_POST_VARS['schedphone'];
$schedcellphone=$HTTP_POST_VARS['schedcellphone'];
$schedemail=$HTTP_POST_VARS['schedemail'];
?>

Undefined indexes in this case means that one or more of the values were not entered on the form. To get rid of the undefined index, you have to check to make sure the values were set: if(isset($POST['crf']) { $crf = $POST['crf'];}

Also, you may shorten those to:

<?php
$crf = $_POST['crf'];
$crfaddr = $_POST['crfaddr'];
$city = $_POST['city'];
// etc...
?>

badgoat

Nevermind, I got it 😉 Poor coding!

EDIT

And thank you Rodney, I will implement that as well!