PHP - Checking If Page Exists

I have come across couple of similar answers for my question in this form, but could not solve my exact problem. Therefore I am posting this he

I have an xml file as shown below:

<?xml version="1.0" encoding="ISO-8859-1"?>
    <document>
        <user>
            <user_id>0121</user_id>
            <name>Tim</name>
            <file>0121.file</file>
        </user>

        <user>
            <user_id>0178</user_id>
            <name>Henry</name>
            <file>0178.file</file>
        </user>

        <user>
            <user_id>0786</user_id>
            <name>Martin</name>
            <file>0786.file</file>
        </user>

        <user>
            <user_id>1239</user_id>
            <name>Jan</name>
            <file>1239.file</file>
        </user>
    </document>
I ask the user to input his user_id and post this user_id and perform a check on the entire xml file to check whether the entered user_id exists in the xml file or not. If exists then I go further if not echo a error message. Can anybody pull me out of this?

Thanks

Hi,

I'm making a website that uses data stored in SQL.

One of my pages allows the user to enter a new product into a product table. I was wondering if somebody could help me with some validation or Query that will not allow the user to enter a product name that already exists in the table?

Code: [Select]

$nameNew = $_POST['new];
$nameID = $_POST['newID];
$namePrice = $_POST['newPrice];

INSERT INTO products
VALUES ($nameNew, $newID, $newPrice)

$describeQuery = "SELECT ID, Name, Price FROM Products";


$results = sqlsrv_query($conn, $describeQuery);

echo '<table border="1" BORDERCOLOR=Black>';
echo '<tr><th bgcolor = "LightBlue">Name</th><th bgcolor = "LightBlue" >ID</th> <th bgcolor = "LightBlue" >Price</th></tr>';


while($row = sqlsrv_fetch_array($results, SQLSRV_FETCH_ASSOC))
  {   
    echo '<tr>';
echo '<td >' .$row['Name'].'</td>';
echo '<td>' .$row['ID'].'</td>';
echo '<td>' .$row['Price'].'</td>';

echo '</tr>';
}

echo '</table>';
sqlsrv_close($conn);


   
Thanks

I am trying to allow a user to proceed to another page but only after a user has clicked a Facebook like button and a check has been done to check if the currently logged in user has liked the specific Facebook Page.

How can I go about this?

Thanks in advance 

Hi community,i creating a simple website and description
i analyzed my code about 3days...2hours a day.
if i get the point in my head.then its say Website url is in use..but not..ok maybe i give the code below.
so if you can explain whats wrong.thanks
Code: [Select]
<?php
include_once ('connect.php');
$url= mysql_real_escape_string($_POST['url']);
$desc=mysql_real_escape_string($_POST['desc']);
if ($id == "krauti")
{
    if (empty($_POST['url']) && empty($_POST['desc']))
    {
        die('<br><center>Both Empty!.<center/><br/>');

    }
    if (empty($_POST['url']))
    {
        die('<br><center>URL Empty!.<center/>');

    }
    if (empty($_POST['desc']))
    {
        die('<br><center>desc empty fill it!.<center/>');
    }
    
     
        
       
       $url = htmlspecialchars( stripslashes( strip_tags($_POST['url'] ) ) );
$aprasymas = htmlspecialchars( trim($_POST['desc'] ) );


$query = mysql_query("SELECT * FROM linkai WHERE url = '$url' AND 'desc' = '$desc'");
if( mysql_num_rows( $query ) == 1 ) {
    "INSERT INTO linkai ".
       "(id, url, desc) ".
       "VALUES('','$_POST[url]','$_POST[desc]')";
       echo "Yes!."; 

}
 
    else if (mysql_num_rows($query) == 0 ){
 
echo "No!!";
}

}  
?>

Can someone explain why this code:
if (mysql_result($data,0,$SQLLargeName) = " "){
$LargeImage = "#";
}
else {
$LargeImage = mysql_result($data,0,$SQLLargeName);
}


Gives me this error?
Fatal error: Can't use function return value in write context in /home/worldw44/public_html/SQL.php on line 38


And ways round it?

Thanks.

Hi,

I have a sign up form that generates a activation key and emails it to user and they cannot login until account has been activated etc.

My problem is i am not sure how to in php generate a new activation key if the generated one has already been used.

I know how to do the MySQL query to check if activation key already exists but not sure how to basically tell PHP that if the activation key already exists in DB then generate a new key until one is found that does not already exist.

I gather i may need a loop but not sure. Could someone please help ?

Like i say i know how to do the MySQL query just need some sample code to know how to do what i asked above.

Thanks for anyhelp; Much Appreciated

<SCRIPT LANGUAGE="JavaScript">
<!-- Begin
function popUp(URL,URL2) {
day = new Date();
id = day.getTime();
eval("page" + id + " = window.open(URL,'" + id + "', 'toolbar=0,scrollbars=1,location=0,top=10,left=10,statusbar=0,menubar=0,resizable=0,width=408,height=400');");

day = new Date();
id = day.getTime();
eval("page" + id + " = window.open(URL2,'" + id + "', 'toolbar=0,scrollbars=1,location=0,top=10,left=450,statusbar=0,menubar=0,resizable=0,width=408,height=400');");
}
// End -->
</script>

I have a map which shows sales people by location and if more then one sales person exists then I would need 2 pop up windows.   This works great other than the fact that the areas with one sales person are getting a blank 2nd popup as a second salesperson does not exist.   Any help would be appreciated.   Thanks In Advance
Edited by phpbeginner, 27 June 2014 - 05:52 AM.

My error below returns (echos) that there is no data under the table sites to display. But, there is. Why is it doing this?

class_l.php

<?php

class displaySites 
{

function grabSites()

{

$query = mysql_query("SELECT title,description,votes,dates,comments,out,in FROM sites ORDER BY id DESC LIMIT 100");

if(mysql_num_rows($query) > 0)

{

while($fetch = mysql_fetch_assoc($query))

{

echo "

<div id='post-1' class='post'>

<h2 class='title'><a href='#'>". $fetch['title'] ."</a></h2>

<h3 class='date'>Submitted on ". $fetch['date'] ."</h3>

<div class='entry'>

<p>". nl2br(stripslashes($fetch['description'])) ."</p>

</div>

<p class='meta'><a href='#'>View</a></p>

<div class='hr'>

</div>

</div>

";

}

}

else

{

echo "

<div id='post-1' class='post'>

<h2 class='title'><a href='#'>Oh NOEZ!</a></h2>

<h3 class='date'>". date("M-d-Y") ."</h3>

<div class='entry'>

<p>There are currently no sites to display!</p>

</div>

<p class='meta'>View</p>

<div class='hr'>

<hr />

</div>

</div>

";

}

}
}

class register
{

function createAccount()

{

$username = mysql_real_escape_string($_POST['username']);

$password = md5(sha1(sha1($_POST['password'])));

$name = mysql_real_escape_string($_POST['title']);

$description = mysql_real_escape_string($_POST['description']);

if(isset($username) && isset($password) && isset($name) && isset($description))

{

if(!$username || !$password || !$name || !$description)

{

echo '<table border="0"><form action="register.php" method="POST">

<tr><td>Username</td><td><input type="text" name="username" maxlength="20"></td></tr>

<tr><td>Password</td><td><input type="text" name="password" maxlength="30"></td></tr>

<tr><td>Site Name</td><td><input type="text" name="title" maxlength="25"></td></tr>

<tr><td>Site Description</td><td><textarea cols="40" rows="18" name="description" maxlength="750"></textarea></td></tr>

<tr><td>Finish!</td><td><input type="submit"></td></tr>

</form></table>';

}

else

{

$query = mysql_query("SELECT * FROM sites WHERE username = '$username' LIMIT 1");

if(mysql_num_rows($query) > 0)

{

echo "Sorry, an account with this username already exists.";

}

else

{

$date = date("M-d-Y");

$ip = $_SERVER['REMOTE_ADDR'];

//create their account

mysql_query("INSERT INTO sites VALUES (null, '$username', '$password', '$name', '$description', 0, 0, 0, '$date', '$ip', 0)");

echo "You have successfully registered your site on NovaTops! <a href='login.php'>Login</a>";

}

}

}

else

{

echo "One or more of the variables are not set.";

}

}
}

class login 
{

function verifyLogin()

{

$username = mysql_real_escape_string($_POST['username']);

$password = md5(sha1(sha1($_POST['password'])));

if(isset($username) && isset($password))

{

if(!$username || !$password)

{

echo "<table><form action='login.php' method='POST'>

<tr><td>Username</td><td><input type='text' name='username' maxlength='20'></td></tr>

<tr><td>Password</td><td><input type='password' name='password' maxlength='30'></td></tr>

<tr><td>Finished?</td><td><input type='submit'></td></tr>

</form></table>";

}

else

{

$query = mysql_query("SELECT * FROM sites WHERE username = '$username' AND password = '$password'LIMIT 1");

if(mysql_num_rows($query) > 0)

{

echo "Congratulations! You have successfully logged in! <a href='index.php'>Home</a>";

$_SESSION['user'] = $username;

}

else

{

echo "It seems you've typed in the wrong username and/or password. <a href='login.php'>Try Again</a>";

}

}

}

else

{

echo "One or more of the variables aren't set.";

}

}
}
?>


index.php


<?php
include_once('includes/config.php');
include_once('class_l.php');

?>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<title><?php echo $title; ?></title>
<meta name="keywords" content="" />
<meta name="description" content="" />
<link href="styles.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="wrapper">
   <div class="top_text"><h1><a href="#"><?php echo $site_name; ?></a></h1>

    <h2><a href="#"><?php echo $slogan; ?></a></h2></div>

<div id="content">

<div id="blog">

<div id="post-1" class="post">

<h2 class="title"><a href="#">Welcome to NovaTops!</a></h2>

<h3 class="date">Created on April 06, 2011</h3>

<div class="entry">

<p>Hello there! If your viewing this message right now, your on the awesome site called NovaTops! NovaTops allows you to register

your site in our database, and then the site's script automatically starts to rank your site. The higher your rank, the more likely

your site's going to get a ton of views!</p>

</div>

<div class="hr">

<hr />

</div>

</div>

<!-- end #post-1 -->

<?php

$displaySites = new displaySites();

$displaySites->grabSites();

?>

</div>

<!-- end #blog -->

<?php include_once('includes/navigation.php'); ?>

<!-- end #sidebar -->

<div style="clear: both; height: 1px;"></div>

</div>

<!-- end #content -->

<div id="footer">

<p>Copyright &copy; 2011. Design by <a href="http://www.flashtemplatesdesign.com/" title="Free Flash Templates">Free Flash Templates</a></p>

<p><a href="#">Privacy Policy</a> | <a href="#">Terms of Use</a> | <a href="http://validator.w3.org/check/referer" title="This page validates as XHTML 1.0 Transitional"><abbr title="eXtensible HyperText Markup Language">XHTML</abbr></a> | <a href="http://jigsaw.w3.org/css-validator/check/referer" title="This page validates as CSS"><abbr title="Cascading Style Sheets">CSS</abbr></a></p>

</div>
</div>
<!-- end #wrapper -->
</body>
</html>

Hi all,

I have the following mysql delete query that essentially deletes a row from two seperate tables "messages" and "messages2" where the id is equal to that in both of the tables. The problem I am getting (for obvious reasons) is that it will only delete from the table, if it indeed exists in both tables.

Here is the query:

Code: [Select]
DELETE FROM messages,messages2 USING messages,messages2 WHERE messages.id = messages2.id AND messages.id = ?;

How would I go about setting it so that the query always deletes from table "messages" and only deletes from "messages2" when a corresponding id exists?

I think it would involve an IF EXISTS clause, but I am not sure on this, or indeed how to implement it.

Thanks in advance guys

Dan

This topic has been moved to MySQL Help.

http://www.phpfreaks.com/forums/index.php?topic=328831.0

Maybe I am over thinking this, but I would like to see if their is another value after the current value without moving the internal array pointer. What can I do?

I apologize in advance for any misuse of terminology. I find that I am rather ignorant in such things.

I'm working on a WordPress theme. Specifically on the part that shows the "next: link-to-next-post" and "previous: link-to-prev-post" links.

Here is the code that I have:
Code: [Select]
<?php
  $nextvar=next_post_link('%link');
  $prevvar=previous_post_link('%link');
?>

<?php if (isset($nextvar)) { ?>
<h3>Next</h3>
<p><?php next_post_link('%link'); ?></p>
<? } ?>

<?php if (isset($prevvar)) { ?>
<h3>Previous</h3>
<p><?php previous_post_link('%link'); ?></p>
<? } ?>
The first part intends to check if the links exist. And this works fine.

However, the only output I'm getting are the values of $nextvar and $prevvar. The headers are nonexistent. What's wrong?

Any help is much appreciated, and I thank you in advance.

Hello,

I want to check when adding a new user, that if there are 2 records that has the same recruiter id, it's should give an error, if less, than it makes him complete the registration

Also check if the National ID number is not assigned to another user, so if there is a record that has it, it should give and error, if it's unavailable, it should let him complete the registration

here is my code

register.html

Code: [Select]
<html>
  <form action="post.php" method="post">
<table>
<tr><td>First Name: <input type="text" name="fname" /></td></tr>
<tr><td>Middle Name: <input type="text" name="mname" /></td></tr>
<tr><td>Last Name: <input type="text" name="lname" /></td></tr>
<tr><td>Mobile: <input type="text" name="mobile" /></td></tr>
<tr><td>Telephone: <input type="text" name="tel" /></td></tr>
<tr><td>Address: <input type="text" name="address" /></td></tr>
<tr><td>Job Title: <input type="text" name="job" /></td></tr>
<tr><td>Company: <input type="text" name="company" /></td></tr>
<tr><td>National ID Number: <input type="text" name="nid" /></td></tr>
<tr><td>Recruiter ID: <input type="text" name="recruiteris" /></td></tr>
<tr><td>Email: <input type="text" name="email" /></td></tr>
<tr><td>Password: <input type="password" name="password" /></td></tr>
<tr><td>Type: <input type="text" name="type" /></td></tr>

<tr><td><input type="submit" /></td></tr>

</table>
</form></html>


post.php

Code: [Select]
<?php

$sql="INSERT INTO users (id,fname, mname, lname, mobile, tel, address, job, company, nid, recruiteris, email, password, type)
VALUES
('','$_POST[fname]','$_POST[mname]','$_POST[lname]','$_POST[mobile]','$_POST[tel]','$_POST[address]','$_POST[job]','$_POST[company]','$_POST[nid]','$_POST[recruiteris]','$_POST[email]','$_POST[password]','$_POST[type]')";

if (!mysql_query($sql,$con))
  {
  die('Error: ' . mysql_error());
  }
echo "1 record added";
echo "<br />";
echo "<a href='http://waw-eg.com/admin/register.html'>Add More Client? Click Here</a><br/>";  
echo "<a href='http://waw-eg.com/admin/Users.php'>View Users Click Here</a>";

mysql_close($con)
?>

The Script:

<form method="post" action="<?php echo $_SERVER['PHP_SELF'] ?>">
    <input type="text" name="hashtags" />
    <input type="submit" name="submit" />

</form>
<?php

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

    $hashtags = explode(", ", $_POST['hashtags']);

// Prints e.g.: Array ( [0] => #tag1 [1] => #tag2 [2] => #tag3 [3] => #tag4 )
    print_r($hashtags);
    
}

?>

This gets inserted into the input field:

#tag1, #tag2, #tag3, #tag4

I am looking to check if any of the hashtags inside the array already exist in the database, if it does not exists it should create the new ones in the table.   I know how to do this if all do not exists in the array and then it goes over to the MySQL query and inserts all of them.   My Question Is: How to insert only the ones which do not exists out of the array, so the ones which do exists do not get inserted again into the table?
Edited by glassfish, 14 October 2014 - 10:15 AM.

Looking for the best method to conditionally strip leading zeros for the following situation:


$a = array(01, 02, 03, ... 10, 11);

$a < 10 ? $a = ? : '';

For the following result:
1, 2, 3, ... 10, 11

Is there a better method than explode?