[Extractign a Substring...]

If the URL is always going to look similar to that example, you can do something like

<?php
$str = 'http://www.amazon.co.uk/gp/aw/d/B004JN01LW/ref=mp_s_a_1?qid=1305169492&sr=8-1';
$x  = parse_url($str);
list(,,,,$part) = explode('/',$x['path']);
echo $part . "<br>";
?>

 

Ken

 

[PLEASE HELP URGENT]

First, when posting code on this forum, please put the code between

tags.

Next, Please describe your problem better.

 

Ken

[odd Backslash]

Your server probably has runtime magic quotes turned on. If you have access to the php.ini file, turn them off. If you don't have access, get your hosting company to turn them off. Until that happens use stripslashes on the data before displaying it.

 

Ken

[stripslashes in Mysql query var]

That's different. You need to put the column name in the select clause, not the value.

 

Plus you shouldn't use addslashes when adding data into the database, use mysql_real_escape_string which escapes many more problematic characters.

 

If you explain what you're trying to do with the retrieved data & how you're doing it, we can help you.

 

Ken

[can a variable hold a link?]

The img link uses $info['img'] which is different than $info['username']

 

Just because it works for one, doesn't mean it works for the other.

 

Ken

[can a variable hold a link?]

Is $info['username'] set to anything?

 

Put

<?php
echo '<pre>' . print_r($info,true) . '</pre>';
?>

at the start of your while loop. This will tell you what's being returned by the query.

 

Ken

[MOVED: Can you recommend a good place to do PHP exercises?]

This topic has been moved to Miscellaneous.

 

http://www.phpfreaks.com/forums/index.php?topic=331627.0

[stripslashes in Mysql query var]

Either

<?php
$query1 = "SELECT distinct link_id, url, title, description, " . stripslashes($fulltxt) . ", size FROM ".$mysql_table_prefix."links WHERE link_id in ($inlist)";

	$result = mysql_query($query1);
	echo mysql_error();
?>

or

<?php
$fulltxt = stripslashes($fulltxt);
$query1 = "SELECT distinct link_id, url, title, description, $fulltxt, size FROM ".$mysql_table_prefix."links WHERE link_id in ($inlist)";

	$result = mysql_query($query1);
	echo mysql_error();
?>

 

Ken

[can a variable hold a link?]

Or

<?php
$amessage ="<a href='freindacept.php?username={$info['username']}'>Has sent you a friend request </a>'";
?>

 

Ken

[synyax erorr]

Do

<?php
echo "<a href='viewprofile.php?username={$info['username']}'><img src='http://datenight.netne.net/images/{$info['img']}'  title='{$info['username']}' width='50' height='50'></a>";
?>

 

No escaped double quotes. Much cleaner IMHO.

 

Ken

[syntax error]

You never close your validate_input function, plus there are many other syntax errors in your code. Like "<?php" & "?>" tags in the middle of the HEREDOC blocks.

 

Ken

[How do I use substr to remove numbers only?]

If you use the explode method, you can use the little used third parameter to explode to limit the number of parts returned:

<?php
$strs = array('1. item number 1',
'12. item number 12',
'101. item number 101');
foreach ($strs as $str) {
   list (,$str) = explode('.',$str,2);
   echo ltrim($str) . "<br>\n";
}
?>

 

Ken

[I have a few errors with my php coding]

The $_REQUEST array is populated via information on the URL or from a form. You really should use the $_GET array if the values are coming from the URL (or a form using the "get" method) or the $_POST array if the values come from a form with using the "post" method.

 

At the top of your script, put:

<?php
if (isset($_POST)) {
  echo '<pre>$_POST: ' . print_r($_POST, true) . '</pre>';
  echo '<pre>$_GET: ' . print_r($_GET,true) . '</pre>';
?>

This will dump to the screen these arrays in a readable way.

 

To get around your problem, do something like:

<?php
if(isset($_REQUEST['username']) && $_REQUEST['username'] == "rotten" && isset($_REQUEST['password']) && $_REQUEST['password'] == "1212"){
$_SESSION['username'] = "rotten";
$_SESSION['password'] = "1212";
header("Location: home.php ".$_SESSION['pageredirect']);
}
?>

The isset function checks to see if the array entry is there before checking the value.

 

Ken

[I have a few errors with my php coding]

How is this code being invoked?

 

When posting code to this forum, please put it between

tags.

 

Ken

[Trouble with IF]

You can also write it like

<?php
$image = "<img src='images/flags/{$row_rsPilots['country']}.gif' alt='' name='Flag' width='20' height='20' />";
$link = "http://www.domain.com/{$row_rsPilots['country']}";
if (!empty($rsPilots['country'])) {
echo "<a href='$link'>$image</a>";
}
?>

which gets rid of the escaped double quotes and looks cleaner (IMHO).

 

Ken

[Reading Array to get Value]

Instead of doing this

<?php
$concertDates = array();
?>

at the start of your script, initialize the array with the values and remove all other lines that populate the array:

<?php
$concertDates = array('201105071'=>'May 7, 2011 (9:00am - 12:00pm)',
    '201105072'=>'May 7, 2011 (1:00pm - 4:00pm)',
    '201105141'=>'May 14, 2011 (9:00am - 12:00pm)');
?>

 

Ken

[Reading Array to get Value]

<?php
echo $concertDates[$concertDate];
?>

or

<?php
$var = $concertDates[$concertDate];
echo $var;
?>

 

Ken

[E-Mail script problem]

And your problem is?

[Why does this not set any cookie?]

Can you post the code where you set the cookie?

 

Ken

[Counting binary tree]

You're returning the totalcount from the function, but not doing anything with it when you call the function recursively. Try something like:

<?php
  include 'config.php';  // Connect database

  function leftcount($node)   //Function to calculate leftcount
  {
    $sql = "SELECT lchild,rchild FROM tree WHERE parent = '$node'";
    $execsql = mysql_query($sql);
    $array = mysql_fetch_array($execsql);
    
    if(!empty($array['lchild']))
    {
      $count += leftcount($array['lchild']);  
    } 
    if(!empty($array['rchild']))
    {
       $count += leftcount($array['rchild']); 
    }
    
    $totalcount = 1 + $count;
    return $totalcount;
    
  }
  
  $parent = "2";
  $left = leftcount($parent);
  echo $left;
  
?>

 

Ken

 

[How to empty variable if it doesn't begin with http?]

I would use substr

 

<?php
if (substr($url,0,7) != 'http://') {
  $url = '';
}
?>

 

Ken

[Keeping Dates as Text]

Did you try it?

 

It works fine.

 

Ken

[How do websites like this work???]

This is most likely done with mod-rewrite in Apache.

 

Ken

[Foreach loop, not looping?]

It should echo "123"

 

Try

<?php
$array = array("1","2","3");

foreach ($array as $value){

echo $value . '<br>';

}
?>

 

Another way to do this is

<?php
$array = array("1","2","3");
echo implode('<br>',$array);
?>

 

Ken

[Problem with path]

Using a slash at the start of a path like that, say to start at the root of the whole file system, which is not what you want.

 

You want to do something like

<?php
require_once $_SERVER['DOCUMENT_ROOT'] . '/config.inc.php';
?>

 

If your file is in the webroot.

 

Ken