How to get rid of warnings?

[Lenard Redwood]

I have the maximum number of warnings during PHP development. How can I
get rid of these warnings without turning them off in PHP?

Here's the code I have:

<form method="POST" action="eat.php ">
<select name="lunch[ ]" multiple>
<option value="pork">BB Q Pork Bun</option>
<option value="chicken" >Chicken Bun</option>
<option value="lotus">L otus Seed Bun</option>
<option value="bean">Be an Paste Bun</option>
<option value="nest">Bi rd-Nest Bun</option>
</select>
<input type="submit" name="submit">
</form>

Selected buns: <br/>
<?php
foreach ($_POST['lunch'] as $choice) {
print "You want a $choice bun. <br/>";
}
?>


And I get: Warning: Invalid argument supplied for foreach() in
C:\lighttpd\htd ocs\index.php on line 17

Is there a way to give the 'lunch' variable a default value if
undefined?
Thank you.

[Jerry Stuckle]

Re: How to get rid of warnings?

Lenard Redwood wrote:

I have the maximum number of warnings during PHP development. How can I
get rid of these warnings without turning them off in PHP?
>
Here's the code I have:
>
<form method="POST" action="eat.php ">
<select name="lunch[ ]" multiple>
<option value="pork">BB Q Pork Bun</option>
<option value="chicken" >Chicken Bun</option>
<option value="lotus">L otus Seed Bun</option>
<option value="bean">Be an Paste Bun</option>
<option value="nest">Bi rd-Nest Bun</option>
</select>
<input type="submit" name="submit">
</form>
>
Selected buns: <br/>
<?php
foreach ($_POST['lunch'] as $choice) {
print "You want a $choice bun. <br/>";
}
?>
>
>
And I get: Warning: Invalid argument supplied for foreach() in
C:\lighttpd\htd ocs\index.php on line 17
>
Is there a way to give the 'lunch' variable a default value if
undefined?
Thank you.
>

Make sure $_POST['lunch'] is set and is an array. Check out isset() and
is_array().

And ALWAYS validate information coming from the user. NEVER assume
you're getting something.

--
=============== ===
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attgl obal.net
=============== ===

[Gucci]

Re: How to get rid of warnings?

try
<?php
foreach ($lunch as $choice) {
print "You want a $choice bun. <br/>";
}
?>

[Juliette]

Re: How to get rid of warnings?

Gucci wrote:

try
<?php
foreach ($lunch as $choice) {
print "You want a $choice bun. <br/>";
}
?>
>

RED ALERT ! never work with register_global s on

[Manish]

Re: How to get rid of warnings?

<?php

if(is_array($_P OST['lunch']) && count($_POST['lunch'])) {
foreach ($_POST['lunch'] as $choice) {
print "You want a $choice bun. <br/>";
}
}

?>

[Lenard Redwood]

Re: How to get rid of warnings?


Manish wrote:

<?php
>
if(is_array($_P OST['lunch']) && count($_POST['lunch'])) {
foreach ($_POST['lunch'] as $choice) {
print "You want a $choice bun. <br/>";
}
}
>
?>

Thank you. Now I get this error:

Notice: Undefined index: lunch in C:\lighttpd\htd ocs\index.php on line
17

[Jerry Stuckle]

Re: How to get rid of warnings?

Lenard Redwood wrote:

Manish wrote:
>

>><?php
>>
>>if(is_array($ _POST['lunch']) && count($_POST['lunch'])) {
> foreach ($_POST['lunch'] as $choice) {
> print "You want a $choice bun. <br/>";
> }
>>}
>>
>>?>

>
>
Thank you. Now I get this error:
>
Notice: Undefined index: lunch in C:\lighttpd\htd ocs\index.php on line
17
>

See my earlier suggestion. Before checking if it's an array, you should
see if it's even set:

if(isset($_POST['lunch']) && is_array($_POST['lunch']) &&
count($_POST['lunch'])) {
foreach ($_POST['lunch'] as $choice) {
print "You want a $choice bun. <br>";
}
}

BTW - <br/is valid for xml but not html.

--
=============== ===
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attgl obal.net
=============== ===

[Charles]

Re: How to get rid of warnings?


Jerry Stuckle wrote:

See my earlier suggestion. Before checking if it's an array, you should
see if it's even set:
>
if(isset($_POST['lunch']) && is_array($_POST['lunch']) &&
count($_POST['lunch'])) {
foreach ($_POST['lunch'] as $choice) {
print "You want a $choice bun. <br>";
}
}

Yes! Thank you Jerry! Working great now :)

[Chuck Anderson]

Re: How to get rid of warnings?

Jerry Stuckle wrote:

Lenard Redwood wrote:
>

>Manish wrote:
>>
>>

>><?php
>>>
>>if(is_array($ _POST['lunch']) && count($_POST['lunch'])) {
>> foreach ($_POST['lunch'] as $choice) {
>> print "You want a $choice bun. <br/>";
>> }
>>}
>>>
>>?>
>>>

>Thank you. Now I get this error:
>>
>Notice: Undefined index: lunch in C:\lighttpd\htd ocs\index.php on line
>17
>>
>>

>
See my earlier suggestion. Before checking if it's an array, you should
see if it's even set:
>
if(isset($_POST['lunch']) && is_array($_POST['lunch']) &&
count($_POST['lunch'])) {
foreach ($_POST['lunch'] as $choice) {
print "You want a $choice bun. <br>";
}
}
>
BTW - <br/is valid for xml but not html.
>
>

"&& count($_POST['lunch'])" seems superfluous here. If it's an array
(empty or not), then foreach will not issue a warning.

--
*************** **************
Chuck Anderson • Boulder, CO

http://www.CycleTourist.com

*************** **************

[william.clarke]

Re: How to get rid of warnings?


Jerry Stuckle wrote:

See my earlier suggestion. Before checking if it's an array, you should
see if it's even set:
>
if(isset($_POST['lunch']) && is_array($_POST['lunch']) &&
count($_POST['lunch'])) {
foreach ($_POST['lunch'] as $choice) {
print "You want a $choice bun. <br>";
}
}
>
BTW - <br/is valid for xml but not html.
>
--
=============== ===
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attgl obal.net
=============== ===

<br /for XHTML
<brfor HTML