[open cart - blank page]

I have got an install of opencart 1.5.1.3 which has been migrated to my remote host,

 

All the configurations files have been altered to reflect the new host, all the file and folder permissions are set correctly 

 

But it is not displaying the front end (it just returns a blank page no source at all), but the backend is working fine

 

Has any one had a similar problem, or got any suggestions

 

Thanks in advance

[Print each array element on new line]

try

 

<?php
    echo "<pre>";
    print_r($array);
    echo "</pre>";
?>

 

or you could use the following

 

<?php
    foreach($array as $key => $item){
        echo "[" . $key . "] => " . $value . "<br />"; 
    }
?>

[How to Safely Store Passwords]

Store them using a one way hash

 

'md5' or more secure 'sha1'

 

<?php

$pswd = md5('password');
$pswd = sha1('password');
?>

[Help converting seconds to minutes and hours]

Ran in to this problem a few days ago here's the code i use

 

$time = the number of seconds

 

<?php
         function format_time($time){
	$seconds = $time % 60;
	$time = ($time - $seconds) / 60;
	$minutes = $time % 60;
	$hours = ($time - $minutes) / 60;

	//Format Number
	return sprintf('%02d', $hours) . ":" . sprintf('%02d', $minutes) . ":" . sprintf('%02d', $seconds);
}
?>

[Reason for Slow loading images?]

I would think it is php working out the size of the image on the following line

 

list($width,$height) = getimagesize($myimage);

 

you could try setting the $width and $height to a constant here to see if it is indeed slowing down your script

 

Not sure this really helps because I'm not sure of any other way of getting the size of the image dynamically.

[help with voting system???]

You need to change the following lines

 

$vote = $_GET['votes'];

if(isset($_POST['vote'])){

    echo "voted";

    echo $vote;

}

 

to

 

if(isset($_POST['votes'])){

    $vote = $_POST['votes'];

    echo "Voted : " . $vote;

}

 

Haven't tested this but is should work

[PHP Paypal Pro]

Hi

 

Does any one know of any good tutorials for paypal web payments pro, or recommend books

 

Thanks in advance

[shopping cart help]

try codeigniter has a very nice simple cart system

 

but you need to have used php frameworks 

 

http://codeigniter.com/

 

Not sure it has a auction feature though

[Installation of PHP on a web server]

You need access to the server directly, if the hosting company is asking you to pay for it, then

your not going to have the relevant access

 

Lots of hosting companies don't charge extra for php, find another hosting company !

[timer]

I don't believe this is possible in php alone you'll need to use javascript or

use a combination to reload the page or call a script (AJAX) at regular intervals thereby effectively

giving you the count down effect.

 

 

[Checking for undefined variables]

You need to use the isset function

 

<?php

session_start();
if(isset($_SESSION['username']));
{
	$username = $_SESSION['username'];

[You have an error in your SQL syntax; check the manual that corresponds to your]

SELECT image,id,projecttitle,projectcode,FROM portfolio ORDER BY id DESC LIMIT 16

 

you need to remove the comma before 'FROM'

 

SELECT image,id,projecttitle,projectcode FROM portfolio ORDER BY id DESC LIMIT 16

 

Hope that helps

[Installation: Writing data to a variable, in another file]

Write the information to file example below from http://www.tizag.com/phpT/filewrite.php

 

$myFile = "testFile.txt";
$fh = fopen($myFile, 'w') or die("can't open file");
$stringData = "Bobby Bopper\n";
fwrite($fh, $stringData);
$stringData = "Tracy Tanner\n";
fwrite($fh, $stringData);
fclose($fh);

 

[PHP require login]

If you db login system is using sessions, then you should be able to read the session variable and determine if the user is logged in

 

You will need to know the name of the session variable

 

if($_SESSION['logged_in']){
     //Hidden information only logged in users see this
}else{
     //Redirect to login page or display error
}

[syntax for including variables within a href links]

You could use

 

str_replace

 

to replace the space

 

If I remember it should work like this but you might need to look it up on the manual

 

echo str_replace(' ', '_', $nt[$i]);

[syntax for including variables within a href links]

echo "<a href="$nt[$i].html">$nt[$i]</a>";}

 

Try this...

 

echo "<a href='" . $nt[$i] . ".html'>"  . $nt[$i] . "</a>";}

 

 

[query mysql with url format]

You can use mod_rewrite to do this

 

http://blogs.sitepoint.com/guide-url-rewriting/

 

Google 'mod_rewrite' lots of tutorials

[about views]

Views have the following benefits:

 

    * Security - Views can be made accessible to users while the underlying tables are not directly accessible. This allows the DBA to give users only the data they need, while protecting other data in the same table.

    * Simplicity - Views can be used to hide and reuse complex queries.

    * Column Name Simplication or Clarification - Views can be used to provide aliases on column names to make them more memorable and/or meaningful.

    * Stepping Stone - Views can provide a stepping stone in a "multi-level" query. For example, you could create a view of a query that counted the number of sales each salesperson had made. You could then query that view to group the sales people by the number of sales they had made.

 

 

http://www.learn-sql-tutorial.com/Views.cfm

 

Found this hopes it helps

[problem in fopen function]

Have you tried increasing the length value in fread

 

fread  ( resource $handle  , int $length  )

 

         $result =fread($fp, 1024);

[Gantt Chart Tool]

Does anyone know of a good free gantt chart creator tool

 

Thanks

[[SOLVED] file path]

C:/Folder/Folder/../file.txt

 

is the same as

 

C:/Folder/file.txt

 

but i need to evaluate the first to the second to be displayed

[[SOLVED] file path]

I have a path

 

C:/Folder/Folder/../file.txt

 

is there a php function to evaluate to

 

C:/Folder/file.txt

 

[find out if string contains 'xyz']

i think you can use

 

if(ereg("xyz", $string){
    
}

 

[[SOLVED] Page Reload]

Is there a simple way to reload a php page when completed

[WHERE]

I need to have a which returns the number of words which don't start with A-Z

 

SELECT COUNT(*) FROM Dictionary WHERE Word LIKE 'A%'

 

Other than saying NOT 'A%' AND NOT 'B%' etc....

 

is there a simple way of doing this

 

Thanks