Reading MySQL Row - Check Entry In Row And Get Another Entry ( Confusing Title )?

Feb 18, 2011

Alright, wasn't quite sure how to summarize this in the title, but I want to: Check if a user status is "active" or not based on the UserName input.

I have a table witch holds:

Code: [Select]VarChar Username Var CharPassWord int Active
Ted TedsPW
something like the above(assuming it formatted correctly. In my php script I will want to input a variable for Username to check for:

inputUN in this example would be "Ted".
$UserNameToCheck = $_GET['inputUN'];

Then I want to check for that UserName in the database, if it exists, I want pull the value for the "Active" field for just that UserName and echo it.


Check If Entry Already Exists In MySQL Table?

Mar 29, 2009

I have the following script that adds data to a mysql table :

PHP Code:

#connects to the MySQL server
$username = "my_username";
$password= "my_password";


I'm trying to get my script to check wether the category name already exist or not in the table. If the name already exists I want the script to choose another name because duplicate entry is not allowed.

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Sep 2, 2009

I have a simple Crud application where there is one filed called Category. During Creation , for Category I have provided a simple drop down box which lists all categories. During Editing, I need to get the same drop down box with the entry in the database chosen.How do i do this.

For creation i used say

<p><b>Category:</b>&nbsp;&nbsp;&nbsp;<select name="category">
<option>Food & Beverage</option>

How do i do this during editing, say I need to select 'Health' which is available in the variable $row['course detail']

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Sep 19, 2010

When I try to mysql insert values with same names, it encourages this error. When I looked at the table column, I see that the row id is always "1" and it doesnt let to add same entry. [URL] how can I add an auto increment id to that column for adding same entry names?

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Aug 12, 2004

I'm looking for an easy method to implement an 'entry form' for an online competition on my website (a competition page, if you like).

As I am running a 'trade promotion' I will need to apply for a trade permit license, therefore will need to satisfy the local authorities that the entry form and drawing method are acceptible.

The competition page will feature the prize on offer and the fields for entrants to fill in their details.

The tricky part I think is that I then require the entries to be able to be 'drawn randomly' once the competition has ended. Any tips here on how to successfully and easily run a competition from your site?

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Sets Of Text Entry And Store Those Entry On My Database?

Mar 4, 2009

echo "<form method='post'>";
for($i=0; $i<=10;$i++)

Based on my loop structure, how am I be able to store those entry on my database. Can anyone help me please.

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Oct 11, 2003

I am sending data to a text file, and displaying the data on the return page. Then it emails that entry only. (this works fine) But when I call the second page, it displays everything in the text file. Is there a way to to call the last entry to the text file only?

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Dec 12, 2010

Ive just written something quick to enter End of Day stock data from text file into a MYSQL database.This is what the stock data looks like, Ive cropped it, but it runs to 3800 lines.

HTML4Strict Code:

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Jul 30, 2005

I want to use my signup for to my site, but I want to check one of the entries to match a 4 digit code. This is just the entry code, I have a input box above for all of the sign-up info, including the 'code'. I want the code to be 2369 for now, so code == 2369 is the only way it'll allow them to signup. PHP Code:

// includes
// set up error list array
$errorList = array();
$count = 0;

// validate text input fields
if (!$username) { $errorList[$count] = "Invalid entry: Username"; $count++; }

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Feb 7, 2005

I am currently trying to INSERT some data into MySQL database. What would be the correct way for checking if an entry of the same name already exist in the primary key. I was planning to do it like this.

SELECT name FROM table WHERE name = 'whatever'

Do a loop. If data is returned, prompt user that entry exist. Else, continue to INSERT.
Is this the correct way to do it? Is there a shorter way? And It is alright if I execute a lot of SQL query at one go right? What should I watch out for?

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Jul 14, 2011

Im using PHP to parse some XML, I take 3 details from each entry in the XML - Title, Description and ID.

The ID is unique and I store the ID along with title and description in a database. Im running the parse script via CRON so to prevent duplicates I want to first check the database to see if the ID of the entry already exists in the database.

This will get my all the ID's right?

$id = mysql_query("SELECT id FROM updates");
$row = mysql_fetch_assoc($id);
if ($entry->id != $row) {
} else {
echo 'Duplicate';

Does that give me an array that I can compare the ID in the XML to?

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Jun 28, 2009

Is it possible to check an entry against a database before deciding how to process. I have a basic contact form, Name, email, message. What I would like to happen is when the user hits the submit button I want to check if the email address already exists in the database. If it doesnt I want to post the info to a new record, if it does i dont want to post anything to the database, in both instances I want to send the form to an email recipient.

If it is possible to do this please can someone either tell me where I will find a good tutorial which covers it or what search terms should I be searching for. I have tried for ages and just dont get the right results when I try to google.

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Apr 5, 2011

I have a live chat integrated into my website that uses Ajax, PHP and MySQL.

When two people have the chat window open they can chat and it works fine.

How can I send an alert to the person being requested to chat with, or for the chat.php page to popup automatically.

It prob needs to be some function constantly running in the background check the DB for new message entries.

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Symfony Framework - Check Database Entry Existence?

Mar 4, 2011

Using symfony framework, which code is best to query database table to check if entry is already there?

I need query like this:

$q = $this->createQuery('t')
->where(' = ?', $email)
->andWhere('t.type = ?','newsletter');

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Sep 16, 2010

I have a table in my database that looks like this:


I have a cronjob that calls a script. In this script, I want to use my class to check if the url exists, and if it doesn't, delete the entry in the database. Something like this:

foreach row in table, if (Security::checkUrl(team_url)), delete entry. else: update xml.

How can I do something like this? I don't need help with the url verification only the mysql query and how i should go through each row and delete the rows where the url is invalid.

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Feb 20, 2011

I have an input box that lets users enter a date format in PHP date format, for example: M j, Y I want to verify on submit that the user actually enters a date that's in PHP date format. I already have the validation script ready, I just need a regular expression or some sort of way to check that the user actually entered a valid PHP date notation.

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Sep 21, 2000

I am trying to select a random entry from mysql. Anyway - My version of mysql doesn't have the built in rand() function, so I am using PHP's. Anyway - I wrote the following function...

function displayguide(){
$rand = rand(10,202000);
$query = "SELECT *, $rand as random FROM guide_rotater ORDER BY random LIMIT 1";
$result = mysql_query($query);
$this = mysql_fetch_object($result);
print "<b>$this->title</b><p>$this->description<p><a href="$this->url"><b>Read the guide</b></a>";}

Anyway - it works, the only problem is that it uses the same $rand number for all of them so it isn't random I can't think of a way to do this using php's rand function.

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Aug 9, 2005

I have a page that displays an image. The image path and unix time number are all kept in a mysql database. I can't figure out, how I can pick the the next sql record from mysql that was added before the current one.

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Mar 16, 2006

I have a form that enters data into a mysql database and sends me an email. I am having trouble with the apostrophe. When a user enters the apostrophe in the head field, the data does not go into the db yet the email is sent to me and I get this warning.

Warning: mysql_num_rows(): supplied argument is not a valid MySQL result
resource in path Code:

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Jul 16, 2011

I am trying to link to a url in my mysql database I have the code below but it is adding the link after my url as if it were a directory. I have been playing with it and searching the internet for a while. In mysql the row is called $site and it contains a url. Here is what I have


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Nov 7, 2005

I have a question about sql query, I want to access a random entry in
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"select count(*) from A" to get the total, then generate a random
number N from the total count. The problem is, now I need to access
entry no.N of table A, yet A doesn't have a counting field; so I cannot
execute something like "select * from A where id = N". Does anybody
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Jun 16, 2007

What I am trying to do is very simple, but I can't seem to figure it out.

I store prett much everything, aside from my layout, in a mysql database. I want to add tutorials to my website, and I already have the form to add tutorials ready, and the database for tutorials ready. Now, what I want to do is this -

On tutorials.php, I want to provide a link with all the entries in the tutorials database, with only the name and author, and for the name to be a link. When you click on that link, it goes to another page that shows the actual contents of that SINGLE DATABASE ENTRY.

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Mar 6, 2007

So I am wondering if there is a way for me to generically enter values into a database. This is only for INSERTS UPDATES and DELETEs. I want to write a functions that build queries for me.

But I can only build the first part with my current knowledge, I can only build "INSERT INTO table(col1, col2, col3)" or "UPDATE table SET ". I want to be able to write the entire query without having to worry about types. Is there a way to do that in PHP or MySQL?

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Oct 1, 2006

Trying to add a simple entry to a my sql table. server version 4.0.27 database name "dropdown" table name "buttons" column name "one" Code:

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Jun 20, 2011

I have a PHP script search script that logs every query made in a MySQL database starting with 1 in the value column. Currently, if the same terms are searched more than once, 1 is added to the number in the value column. However, after two searches for the same word, the query gets added to the database again. Why could this be? My PHP code is:


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May 7, 2009

basically I connect to a mysql database, and iterate a list of names like this:

$result = mysql_query("SELECT * FROM Students");
echo "<table border="1">";
while($row = mysql_fetch_array($result))


Then I using POST, I pass the name of the student from the ID of the input to deletestudent.php, which looks like this:

$studentremoved = $_POST['delete'];
$sql = "DELETE FROM Students WHERE Student='" . $studentremoved . "'";
$con = mysql_connect("localhost","root","password");


For some reason the scripts execute without throwing and errors to my debugger, but it doesn't delete the record =/

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Apr 29, 2009

This problem is really bugging me, i don't know what's causing it. okay so i have a table full of names, each has like a categoryid that it is in, like 1 or 2.

Now when i go to grab all the titles that are under like 1.. it leaves out a title.

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Apr 14, 2011

I have a database that logs the date and time a song was played in a format like 2011-04-13 17:55:46. It also logs the length of the song in milliseconds. How would I make a live countdown for the user to see as well as a refresh countdown?

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MySQL Duplicate Entry Prevention?

Feb 21, 2011

I am very new to PHP/MySQL and I like to learn, so I'm probably re-inventing the wheel and making a huge number of mistakes as I go. That being said...I am writing code that reads from 3 $_GET['variable'] and posts to an SQL database table in a column defined by one of the $_GET variables:

set datbase server access variables:
$host = "localhost";
$user = "*****_sandbox";
$pass = "******";

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Jul 12, 2011

I have created a MySQL database wherein users add information via PHP.Each time a user adds information I want to assign that entry in the database a unique id number.I would like the first number to be 10000.Then then next entry should be 10001, then 10002 etc.I have a general idea of how this can be done with PHP, but I am looking for some guidance on the most direct way to create this type of identifier.

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Jul 19, 2007

i have just realised i needed to add a number 6 to a field in mysql only thing is there is already 250 entries in, is there anyway i cann add 6 to all fields at the one time?

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May 11, 2007

i have a database with rateid, bandid and a rating,

how can i like each bandid to different pages, so bandid 1 will link to bandid 1's profile page and bandid 2 will link to bandid 2's profile page. any ideas?!

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Feb 6, 2011

so i have a mysql column with a datetime and i was wondering how i could make it echo the time in "X minutes ago" or "X hours ago" and also, when its more then 24 hours old, delete the entire entry

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Nov 26, 2009

So I have a list of shows for a band, and they don't really keep tabs on their website show listing. I don't have time either.

Is there any way to delete a post after the date has passed? (ex. 12/01/09 is deleted 12/02/09)

The script should run on the page that displays the shows, so if anyone looks at it, the shows will self manage, no need for timed scripts.

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Feb 4, 2010

So i am looking to display the last 10 entries of my mysql database. The basics are you can upload data from my website along with a picture. I want to display the most recently uploaded pictures in the websites banner.

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Jul 17, 2005

I was wondering if any of you experts has some example of MySQL data
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Oct 17, 2006

Just a few quick questions about date and time entry using html. What are the preferred methods of entering time data into a database. Eg, using two drop-down lists. And also, can anyone suggest a good date picker, or a datetime picker.

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Dec 29, 2010

I am using this code below. On the message table it puts it in there twice, Sent message twice and notifications table 3 times. It only fires the java once per user but multi times into the table under each user. the dasendto varible is an array passed from the previous page.

PHP Code:
$snacks = $_POST;
$dasendto = strip_tags($snacks['to_users']);
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$dasendmessage = $snacks['sendmessage'];
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Jun 10, 2011

i had a large databse and had to chec if a email is in a special group I had to tables.

first tabel called user

kid int(3) NOT NULL,
Email varchar(255) DEFAULT NULL,


and for every insert i had a defined vid and a email Now i had to check, if a user with the uid is in the group vid.

select,b.vuid from user a, group b where''.$email.'' and a.kid=' . $kid.' and b.vid=' . $vid . ' and a.uid = b.uid limit 1')

and check if the mysql_fetch_assoc is true or false.

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Jun 28, 2010

Using an HTTP POST to a php file to change entries in a given MySQL database.Essentially, the second the value changes, I would like the user that is viewing the database table to be notified.For now my temporary solution is to auto refresh a page displaying the table to keep it updated but I feel like there has to be a more efficient way of going about this.

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Nov 8, 2010

How can i maintain the description of a product as i can see it in the mysql database which includes the carriage returns e.t.c but no HTML.

Is there a function in PHP which can interpret the bits required so when it renders it has or ?

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Jun 17, 2009

I have a button that will delete a row from a table. I am trying to use the javascript confirm action, but Its not working correctly.

<script type="text/javascript">
function confirmation() {
var answer = confirm("Delete the message from <?php echo "$from[0]";?>?")
if (answer){


Note: I said delete earlier, I meant I have a field whre if the value is 2 it is not visible to user, for proof reasons(if a person has confilicts).

also this is my button im using

<div id="deletebutton"><A href="java script:confirmation()" title"Delete" ></a></div>

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Jun 11, 2009

I've got some PHP which adds an entry to a table in my MySQL database. It inserts the ID (which is the primary key) of the entry as NULL, and MySQL is set to auto_increment - everything is working fine.However, I want to run another query immediately after which uses the ID that's just been given to the entry in the previous query. My problem is, MySQL generates that ID, and seeing as I have no other guaranteed unique fields to query against - I'm not sure how to retrieve what it is.

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Nov 8, 2010

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1 11/8/2010 | 12312| Bill | 7:30 AM
2 11/8/2010 | 12311| Bill | 7:45 PM
3 11/8/2010 | 12312| Bill | 8:30 AM
4 11/8/2010 | 12310| Bill | 9:40 AM

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Jun 5, 2007

to keep track of who has dfownloaded files on my site i have a table downloads within this table is 3 rows

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all are (int) my question is if the same user downloads the file again another entry is made for them (the auto increment id is different) but i didn't want the same user to have more than 1 file_id and downloaders_id the same. i know i can query mysql to see if the details are the same but if i find the entry has already been added wheat's the best way to stop that entry going in.

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