Re: validate a tag

[Ben Ramsey <lists@xxxxxxxxxxxxx>]

I just glanced at your code, and your usage of empty() looks correct and 
should work just fine. However, you're calling the function recursively 
(from within itself), so you'll probably wind up in a loop. Pull that 
test out and do it at the top of your script instead of within the function.

I've also found that empty() sometimes doesn't work well with form 
values, so you may want to test with 
(strlen(trim($HTTP_POST_VARS['question'])) > 0) instead.



Pahlevanzadeh Mohsen wrote:
> Dear,I have a input text tag that it named question.
> Also i have a 2 radio bottum.
> When i receive their value,I want to test that
> question tag is empty or not.If empty,I again send to
> client until client fill out this tag.
> Can u solve my problem?
>
>
> <?php
>  function display_form()
>   {
>    echo "<form action=\"".$_SERVER['PHP_SELF']. "\"
> method=\"post\">";
>    echo "Your question<input type=\"text\"
> name=\"question\" "><br />";
>    echo "radio type <input type=\"radio\"
> name=\"type_of_reply\" value=\"0\"><br />";
>    echo "check box type <input type=\"radio\"
> name=\"type_of_reply\" value=\"1\"><br />";
>    echo "<input type=\"submit\">";
> /*   if (empty($HTTP_POST_VARS['question']))
>     {
>      echo "please fill out question field.";
>      display_form();
>     }//end of if*/
>
>   }//end of display_form func
>  function test_var()
>   {
>    if (empty($HTTP_POST_VARS['question']))
>     {
>      echo "please fill out question field.";
>      display_form();
>     }//end of if
>
>   }//end of func
>  function insert_to_question()
>   {
>    display_form();
>    while(empty($HTTP_POST_VARS['question']))
>     test_var();
>   }//end of insert_to_question func
>  insert_to_question();
> ?>

--
Regards,
Ben Ramsey
http://benramsey.com

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