[RESOLVED] Blank page error

drizdor

I have an article news script which work smoothly in my localhost but have some problems when running in online server. The problems are:

The following code (code to display full text of articles) create blank page:

<?
if (isset($GET['a_id']))
{
//$aa=$GET['a_id'];
$aa=mysql_real_escape_string($_GET['a_id']);
//$result1 = mysql_query("SELECT FROM articles where a_id=$a_id");
$result1 = mysql_query("SELECT FROM articles WHERE a_id ='$a_id'") or die( mysql_error() );
$b=0;
$num=mysql_num_rows($result1);
while($row=mysql_fetch_object($result1))
{$b++;
$a_id=$row->a_id;
$a_title=$row->a_title;
$a_image=$row->a_image;
$a_date=strtotime($row->a_date);
$a_link=$row->a_link;
$a_desc=$row->a_desc;
$a_ldesc=$row->a_ldesc;
}
?>

<?=$a_title?>
<?=$a_link?><
<?=$a_desc?> 
<? }?>

WHERELSE this code (code to display list of articles) is working fine:

<?
include ("paging.inc.php");
$limit=20;
$query = "SELECT * FROM articles";
$query=paging_1($query,"","0%");

$result=mysql_query($query);
$num=mysql_num_rows($result);

$c=$offset+1;
while($row=mysql_fetch_array($result))
{$b++;
$a_id=$row['a_id'];
$a_title=$row['a_title'];
$a_image=$row->a_image;
$a_date=strtotime($row->a_date);
$a_link=$row->a_link;
$a_desc=$row['a_desc'];
$a_ldesc=$row['a_ldesc'];
?>
<?=$a_title?>
<?=$a_ldesc?><
<a href="articles_list.php?a_id=<?=$a_id?>">Read more</a> 
<? }?>

AND the following code also (code to dispaly the title, summary, and link to full text articles) is 100% working:

<?
$result1 = mysql_query("SELECT * FROM articles where a_featured='Y'");
$b=0;
$num=mysql_num_rows($result1);
while($row=mysql_fetch_object($result1))
{$b++;
$a_id=$row->a_id;
$a_title=$row->a_title;
$a_image=$row->a_image;
$a_date=strtotime($row->a_date);
$a_link=$row->a_link;
$a_desc=$row->a_desc;
$a_ldesc=$row->a_ldesc;
?>
<?=$a_title?>
<?=$a_ldesc?><
<a href="articles_list.php?a_id=<?=$a_id?>">Read more</a> 
<? }?>

You can download the script here: www.rodzi.net/i/i.zip

Please help me.

NogDog

If you do a "View Source" on the resulting blank page in your browser, do you see the code? If so, the "problem" is probably that short_open_tags is not enabled. This is the reason that using "<?" and "<?=" should be avoided, instead using "<?php" and "<?php echo".

chrome29

A quick way to figure out the error is to turn error reporting on for your script. Just add this at the top of your script before any code.

error_reporting(E_ALL ^ E_NOTICE);

drizdor

Thanks for your suggestion. Everything has been implemented but the problem still exist. PLease visit the demo script at: www.rodzi.net/articles Read the nature of the problem at left margin.

I have checked the databse, everything is OK.

Please help me.

halojoy

this code ( blank ).

This has to be called with submitting an ID, like this:

<a href="get_articles.php?a_id=17">article 17</a>

I have changed to use recommended ( by http://php.net = homepage of PHP)
<?php
I have also changed an error in mysql_query.

What looks like a 'blank page', will actually produce one 
even if no article number was submitted.

$b=0; $b++; is not used, at least not in the code you submitted.
But $b is a counter, to count how many articles
with for example a_id=17
was found in database ........... = number of mysql_results
How many could this be??????

<?php

// START IF
// if is an id submitted in URL, then get it from MySQL
if (isset($_GET['a_id']))
{
$aa=mysql_real_escape_string($_GET['a_id']);
// let us put in $aa here!
$result1 = mysql_query("SELECT * FROM articles WHERE a_id ='$aa'") or die( mysql_error() );

$b=0; // what for ?
$num=mysql_num_rows($result1);
while($row=mysql_fetch_object($result1))
{
$b++; // what for
$a_id=$row->a_id;
$a_title=$row->a_title;
$a_image=$row->a_image;
$a_date=strtotime($row->a_date);
$a_link=$row->a_link;
$a_desc=$row->a_desc;
$a_ldesc=$row->a_ldesc;
}
?>
<!-- changed to real php tags here -->
<p><?php echo $a_title ?></p>
<p><?php echo $a_link ?></p>
<p><?php echo $a_desc ?><br><br>
<?php // real php tag used!
} // ENDIF
?> 
</p> <!--will always be displayed in your BLANK page -->

drizdor

Thank you very much halojoy. Everyhting is ok now. I really appreciate your help. Thanks agian. So much.

bradgrafelman

Don't forget to mark this thread resolved.