PHP :: Selecting 4 Random MySQL DB Entries?

Selecting A Mysql Row Set In A Random Order
I have implemented a links bar on the side of a site, which I want to popuplate with links from a database randomly, but I feel the php workaround I used is inefficient.

Is there a way to randomize the result in a mysql SELECT query?
"SELECT * FROM links ORDER random"
I know the code above is probably way off, but it illustrates what I want I think.

Selecting A Random Row Of A Mysql Query Result?
Let say I have a mysql query, which might yield more than 1 row when queried. How can I set up the query, so that it RANDOMLY selects one of the results? I know that I can do a LIMIT 1 command, but this will always yield the first row.

Selecting Duplicate Entries
I'm having the following problem: Let's assume I have a table with 3 fields: ID (type int), NAME(type varchar), EMAIL (type varchar) in a mysql db. The fields have the following data stored:

1, jack, jack@jack.com
2, tom, jack@jack.com
3, jack, jack@jack.com
.
2000, jack, jack@jack.com

Now let's say I have like some thousand entries like that one above with each one containing different data. So if there are entries which have the same email adress, how I can I select exclusively those entries with the duplicate data in it? So the result of a selection should look something like this: (If I want to show the selection results in html): PHP Code:

How To Return A Random Set Of DB Entries Without Repetition?
i have a sql database with three fields: id, text, category how would i pull a random set of entries without repeated instances and print them in php? example: user has chosen two categories: art, design. user has also chosen to draw 25 entries. I need a script that will return 25 random entries that are in either category art or design without returning the same entry twice.

Selecting Random Rows In A Table.
How can i randomly select rows? say for example i have 50 users, 3 of them were online. I only want the 3 online, BUT i want then to be randomly choose. So that everytime i go to the page, it is a different person. Im assuming MySQL numrows has something to do with it but im not quite sure.

Deleting Entries From Mysql
I have business listings that I have pulled from a database(MySQL) and printed to the page, in an admin page, for review. I'm trying to write a script to add and one to delete the listing.

I get an SQL error, 'check the manual for blah blah near " on line 1'

Here is the 'delete script:

Get All Entries From Today (mysql)
I currently have a page that each time a user visits it, the pageid and timestamp is thrown into a mysql daabase.

so the database looks like so:
linkid time
3 2007-08-22 17:26:21
3 2007-08-20 17:26:21
3 2007-08-22 18:36:59
2 2007-08-22 18:37:21

What i need is for php to show the total amount of visits today as per a certain time zone (or if thats not possible, the past 24 hours)

soo..
Search for all occurrences where linkid = 3 today for a specific timezone (or 24 hours)

MORE SPECIFICALLY
User 1: Lives in New York (EST -5)
registers for my site and sends visitors to his linkid (3)

After two days, this is what the mysql table looks like:
linkid time
3 -=- 2007-08-22 17:26:21
3 -=- 2007-08-20 17:26:21
3 -=- 2007-08-22 18:36:59

But mysql time isn't Eastern time, its another timezone. So when a visitor comes to user1's page at 3pm EST, mysql registers the time as 2007-08-22 17:26:21

So... I want to first add/subtract the number of numbers in the mysql database depending upon the user, and then see the amount of visitors for the day.

MYSQL Entries Won't Update
I am trying to update some entries in a mysql database that will append the filename to the end of a thumbnail directory entry. So for example /images/thumb/ would become /images/thumb/12345.jpg.

I am stumped because the below code gives no php or mysql errors but the entries are not updated in the mysql db! Code:

Multi Entries Update To Mysql
Could someone help me to figure out how to upgrade multi entries to Mysql by using PHP?

Say, I have a table on Mysql

id Priority
1 Okay
2 wait
3 later
4 asap
5 hold

Now I want to upgrade that table to:

id priority
1 hold
2 asap
3 okay
4 wait
5 later

Is it possible to upgrade multi entries with one submitt button? If yes, could you tell me how it could be done.

I knew I could do it by each entry (submitt button).

Update priority set priority='$priority' where id = '$id'

Limiting User Mysql Entries
I have a script i'm making which is going to be used to search for reciprocal links on different sites and I have user levels such as free, paid, ect... I want to make it so that if the person signs up as a free user they can only add like 2-3 domains to be searched for their links. How would I limit the number of domains allowed to be searched? Would I limit the number of mysql entries allowed in the table for the domains?

Populating Dropdown With Mysql Entries
I would like to create a combobox in Flash which is populated with mysql data and programmed with php. For example: There are 3 entries in database .ie. apple, bannana, peach. Now these I want in combobox in Flash MX/flash5.

Day View Calendar / Mysql Entries
I am trying to create a day view of a lab resource reservation system. So far, I've been able to generate a day view table with php, using variables for start time, end time and periods. Periods represent intervals on the day view.

I have two columns in the table: the first one starts at the start time (say 8:00) and there is a row for every time until the end time, each row time being increased by the period, ie. 8:00, 8:30, 9:00 where the period is 30 minutes and the end time is 9:00.

My second column in the table is filled with unix timestamps representing the date for that particular row, so the 8:00 row on July 1, 2007 is represented by a timestamp of 1183291200. I then created variables to represent start and end times and date of a reserved lab resource. I did a little switch statement in my second column of my table saying, if that row's timestamp equals the start or end time of my reserved resource, than give it a certain style.

All well and good, except I need to tie this into a mysql database where the reservation details (start, end, date) are stored. Where I am getting fuzzy is how to integrate the query results from the database into my little system. I would like to have that second column pick up the results from my query and display the reservations, but I'm not sure now to do that. I'd like to post the code here, but I'm not sure how to post php code on these forums without getting yelled at for doing it wrong (I did that once, can you tell?)

Select All Unique Collumn Entries In Mysql
Can anyone tell me how you can query mysql for all unique entries into
a particular table collumn. Ive checked the manual but had no luck!

INSERT Into Mysql Alway Make Two Entries
I code some site and because Im a freak I made my own session-handling.
When a user open up my site it will check if there is a ssid in the url
if not generate one. this will be done by a function generate_ssid() and works fine.
next step is to register the ssid in the table session
this will be done by the following code:
******************************
function ssid_register($ssid,$login,$uid,$admin){

$connect = mysql_connect( $GLOBALS["db_host"],
$GLOBALS["db_user"],
$GLOBALS["db_password"])
or die($GLOBALS["db_error"]);
mysql_select_db($GLOBALS["db_name"],$connect) or die($GLOBALS["db_error"].' ErrorCode s.001-con');
$result = mysql_query("INSERT INTO session SET ssid='$season',ip='$rip'",$connect);
echo ($rs);
return;
}
********************************
I redesigned the INSERT INTO part into all possible syntax but everytime I look into the db, there are two entries with two DIFFERENT ssids.
The only way it works correct is to dont use a variable on the first place.
Means if I use ssid='godhelpmetofindaworkingsolution' it works great but is not realy what I want.

As told above a "INSERT INTO session (ssid) VALUES ($ssid)" also has the effect of two new db-entries.

Populate MySQL With Multiple Text Box Entries
I have about 300 rows of mysql data which I have chosen to diplay with a text box at the end of each row, that is available for adding comments. I would like to be able to add comments to entries and then have an update scripte that would take the text box, named "MC" and place the data in its row identified by a hidden field which would corrrespond to the Primary Key of the MySQL Database. I've done something similar using check box arrays, ie. Checkbox name="MC[]"

My question is whether I can write a script that would test for a value in the corresponding text box, and update the MySQL data accordingly. I have also provided in my display script that if the MC column is already populated in MySQL it will not display in the form.

Number Of Identical Entries In MySQL DB Column
How do you display the number of times a particular entry appears in a column of a database?

Selecting A MySQL Databse
I'm learning MySQL and how to use it through PHP. So I connect to the database without problems, but I can't select it, PHP Code:

PHP + MYSQL PROB, SELECTING EVERY OTHER ROW
I have a MYSQL Db with 1 table called 'Coordinates', it contains 3 columns, 'id', 'lat', 'long'. I'm try to create SQL insert statements using the power of PHP, as my table has 92,000 rows in so far.

I have written some functions, which will work out the four points around these 2 coordinates, but I need to add/call the values from 1 row with the following row. For example: Code:

Deleting Duplicate Entries From MySQL Database Table
The topic is related to MySQL database.

Suppose a table "address" contains the following records

-------------------------------------------------------
| name | address | phone |
-------------------------------------------------------
| mr x | 8th lane | 124364 |
| mr x | 6th lane | 435783 |
| mrs x | 6th lane | 435783 |
| mr x | 8th lane | 124364 |
-------------------------------------------------------

Quote:

Selecting From Multiple Tables In MySQL.
I need help in trying to retrieve information from different tables, each one having a different primary key (auto-increment).

I have 3 pages, each accessing their respective tables.

(TABLE_internet_arts)
TagID (PK)
name
email
message
date
ip
time
profile_id
site_url
image_url
msg_type
site_title
page_title

(TABLE_losangeles_arts)
TagID (PK)
name
email
message
date
ip
time
profile_id
site_url
image_url
msg_type
site_title
page_title

(TABLE_sanfrancisco_arts)
TagID (PK)
name
email
message
date
ip
time
profile_id
site_url
image_url
msg_type
site_title
page_title

Right now, for each table on it's own, the SELECT statement looks like the following:

SELECT * FROM internet_arts ORDER BY TagID DESC LIMIT $offset, $rowsPerPage";

What I want to do is take the messages from all 3 tables and have them displayed, ordering them in chronological order by the date & time posted onto one page.

Anyone know the correct syntax and how to make the SELECT statement to do this?

Selecting From Multiple Tables (Mysql)
The query works fine but I want print also table2 "Name" before the URL below.
I can only get the "Name" from table1.

Here´s the code:

$db = mysql_connect("host", "user", "pass"); mysql_select_db("database",$db);

$result = mysql_query("SELECT table1.CGrpId, table1.CustId, table2.Name, table1.Name FROM table1, table2 where table1.CGrpId=table2.CGrpId AND table1.RegCd=$variable",$db);

if ($myrow = mysql_fetch_array($result))

{ // display list if there are records to display

do {

printf("%s<a href=page.php?CGrpId=%s&codeid=$variable&CustId=%s>%s </a> 
", $myrow["table2.name"], $myrow["CGrpId"], $myrow["CustId"], $myrow["Name"]);

} while ($myrow = mysql_fetch_array($result));

} else { // no records to display

echo "No information."; }

The "table2.Name" gives me a problem, it won´t print.

Selecting A Range Of Dates In MySql
I need to do a search in MySql for birth date range. (i.e. for birth date[color=blue]
>= 01/23/65 and <=12/31/03.)[/color]

Selecting Data From Database(php/mysql).
Alright I've come to a point where I only want a DB for settings and nothing based on ID's on a sql table.

instead of say:

$setting = mysql_query("SELECT * FROM settings WHERE id='1' ");

Now i broken up all the sql into seperate settings like so:

settingname | value

boardonline | no

Thats basicaly how I got the sql set up instead of having it all in one table row I have them in seperate rows.

So how do I go about selecting data from SQL not based on ID but mainly on setting name? would I do

$settings = mysql_query("SELECT * FROM settings");
$settings = mysql_fetch_array($settings);
$settings['boardonline'][1];//would echo true/false according to my sql table instead of the row name?

Selecting The MYSql Field W/ The Biggest #
Alright. I have searched and googled and cannot seem to find the answer. Perhaps I am not wording it right. But here's the issue.

Table: stores
Location1
25

Location2
10

Location3
15

How do I write a MySQL query to find the largest # (in this case is location1)

MySQL Random
I have a script that pulls code from a field in a row in mySQL db randomly, is there a way to have several instances of this pulling in the same script, pulling randomly from the remaining rows without repeating? I guess what I'm needing is a function to lock the row once it has been used in the script so that it doesnt use the same row again, then unlock the rows once the script is complete. Is this even possible?

Random Row From MySQL Table
I'm using PHP3, does anyone know how I can pull a random row from a mySQL table?

Random Entry From Mysql
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);
connect();
$query = "SELECT *, $rand as random FROM guide_rotater ORDER BY random LIMIT 1";
$result = mysql_query($query);
$this = mysql_fetch_object($result);
print "$this->title$this->description<a href="$this->url">Read the guide</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.

Random Extraction Of Rows From Mysql Db
I want to pull out data from a mysql database in a random order. I want multiple rows pulled out and I want next and prev buttons. I have it all working (the next and prev part) but when I add the ORDER BY RAND ( ) part I get the error "Warning: Supplied argument is not a valid MySQL result resource" Can anyone help me? Can you get random results this way if you also want to use limit to put a certain number of results to a page? Here is my code:

Random Image From MySQL Query
in mysql engine 3.23.** and above, I can use this query :

SELECT * FROM tablename WHERE clauses ORDER BY RAND() LIMIT 1

but when I use mysql engine 3.22.** and below, the query does not work, does anyone have any trick to have the random result ?

Random Sample From MySQL Database
I am trying to fetch 5 records, randomly picked and in random order
from a MySQL table (MySQL version > 3.23).

I wrote my SQL Query as

SELECT name,id FROM tablename WHERE active = 'Y' ORDER BY RAND() LIMIT
5

But its not working. It returns records in a fixed order every time.
Can anybody suggest why its not working the expected way?

I found an alternative solution and used the following query

SELECT name,id FROM tablename WHERE active = 'Y' ORDER BY MD5(RAND())
LIMIT 5

Its working fine :-)

But still i am not clear why the first query is failing? :-(

MySQL Question- Random Entry
I have a question about sql query, I want to access a random entry in
table A. It should be a simple task, what I need is to first do
"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
know how to access a certain entry from its' sequential order in the
table?

Picking Random Data Using MySQL
I need some help trying to work out how i can select a random product from my database. My initial thoughts figured it'd be easy, i'd just do a row count and do a random number between 1 and row count and display the product whose product id corrosponds with the random number but i ran across a problem with that. When you delete a product, the product id for that particular product is no longer used so i'd end up with mysql access errors if i did that.

Random Unique Number - Joint MySQL
It has been asked of me to create a randomised unique number. I have generated the random number, however I want to make it unique by cross referrencing the database. IF the number has already been stored it shall REPEAT the function until the new random number is not in the database. When it is unique it shall then be stored in the database. Code:

Upload Image, Make New Random Filename, Add New Name In MySQL
below you will find my code. In this page I have established a database connect already. the file uploads perfectly with my new name. My real question is how can I put my new file name in my database form my variable $newName. What would be the proper code to do this? Code:

Date Dropdown From Mysql Date Entries
For the PHP gurus out there, here is what I want to do: create a dropdown list of available dates from a mysql database date entries. But the dropdown/s should have 3 separate fields in month, day and year which in effect shows only those months, days and years that have corresponding entries from the database.

Planning to use this in the archive section of an online news publication so people can select issues to view via dropdown list that have corresponding entries only.

Limit The Entries
How can I limit the number of entries into the database, so after the limit is reached a text like "sorry limit is reached" is displayed, if the limit is not reached a form is displayed.

Duplicate Entries
I am currently using the form below for people to enter data into mysql, at the moment this has no methed of checking to see if the data they enter already exists, can anyone provide help as to how to this? PHP Code:

Approval Of Entries
I'm designing my first PHP and MYSQL application. It is going to be a database of singing groups. I'm going to allow individuals to enter thier groups info into the database. However, I'd like to be able to set up an admin screen that would allow me to approve each entry first before it can be viewed. As well as let me do some other admin functions, such as edit records, delete records. Any suggestions?

File Entries
I want to open a local file and add lines of text to the top of it, before any previous text in the file. How?

Duplicate SQL Entries
I have a buddy system on my site and I have found that duplicate buddies can be added into the database. Here how I have this set up:

user 1 want to add user 2 as a buddy.
user 1 goes to user 2's page and clicks "add as buddy"
A PM goes to user 2 and asks him if he accepts or declines
if user 2 clicks accept a php script is run

Problem:
This script need to detect if that buddy already exists, if so do nothing or overwrite the original. Right now it just adds the entry again. I am using a very simple table:

UID BID
---------
1 | 2

This would mean user id 1 has a buddy with a buddy id 2

Here is the non-functional code:

$query = mysql_query("UPDATE buddies SET uid='$uid', bid='$bid' WHERE uid='$uid' && bid='$bid'");
print "Buddy Has been overwritten";
//would prefer it not do anything at all if entry exists
if ($query == 0)
{
// No records updated, so add it
$query = mysql_query("INSERT INTO buddies (uid, bid) VALUES ('$uid', '$bid')");
print "Buddy Added";}

Add Entries To Array
What I want to achieve:
A select list in a form should grow with every data entry.
Example:

I have a list of towns to choose from for a single entry.
If there is a town, not in the list, I would like to have the option to enter one in a text field.

Next time I approch the input form, the newly entered town shows up in the select list.

What do I have to do, to expand the select list (resp. the table behind)?

Getting Total Number Of Entries
Hello, Im trying to retrieve and echo the total amount of cars in the database with PHP Code:

Displaying Entries In Rows Instead Of On Top Of Each Other
I'm altering a voting script for our dog rescue so that we can hold an online photo contest. I'm very new to php & mysql..kinda just muddling my way about with this.

I want to display the entries in a row across about 4 or 5 photos and then keep it going that way, but I haven't a clue as to how to do this....

Multiple Blank Entries?
When I go to my secondary page of results after I fill info out on a form on
the first, I get 3 blank entries automatically inserted into the mysql
tables. This second form has these blank entries printing up each time even
if I go in to the second page w/o filling out any info on the first. Is
there a way I could prevent these blank entries from being automatically
entered? Like some code that says that if something is blank then not to
have it entered into the tables? or something easier?

Deleting Entries In A Database
I've got the reading and writing to a database working but want to delete entries ..... how would this be done?

Multiple Entries For Same User?
I am creating this form, and instead of having a huge list of input boxes for visitors to fill out, I am wondering if it is possible to have the user click on add another button, and a new submittion will be added to that persons file.

Removing File Entries
I am using php3 and someone told me that php3 does not support foreach. In that matter, how would i go about grabbing lines from a file, iterating through all the entries and only delete the one that matches a string. I was thinking of a for() statement but I do not know what the php equivalent of perl's splice() is?

Extracting Database Entries
I have a non-profit's web site that wishes to allow their members to
fill out information regarding summer camp information (name, contact
info, mailing info, physician's name, etc) online and submit it. I can
handle taking the info with PHP and putting it into a mySQL database easily.

But what has me stuck is that they want the ability to print out hard
copies of selected submissions (their choice) if they need to.

Would I have to display all the database entries in a form on a new page
with a select box next to each entry and have them pick that way, then
loop through and print out the selected ones or is there a better, more
direct (read: easier) way to accomplish this?

Does this sound like something for which there may be a pre-written PHP
script that can be altered?

Selecting 4 Random MySQL DB Entries?

I have a table set up in my MySQL database called 'features'. This table has 10 entries, but I only want to select 4 random rows and display them out in tables.