Say I have a database table titled "people" and under the column "names", I have "Bill", "Karen", and "Ted".
In my php file, I want to use just one template and using those rows, have a seperate page for each name (like "myfile.php?name=Bill"). From what I understand, I have to use GET, but I'm pretty still confused and inexperienced with that, so how would I go about obtaining my goal here?
If you want to make a page based of a name in the get variable use this.
This basicly takes the name and takes it to the database and selects all field pretaining to that name, then you echo out the varibles and place them where you want a such.
<?php
$name = $_GET["name"];//gets name value from your url that you supplied in your post
$con=mysqli_connect("127.0.0.1","db-username","db-pass","db-name");
mysqli_real_escape_string($con,$name);
$sql = mysqli_fetch_assoc(mysqli_query($con,"SELECT * FROM people WHERE names='$name'"));
$id = $sql['id'];//id would be a field in the people table
$age = $sql['age'];//age would be a field in the people table
echo '<h1>'.$name.'</h1>';
echo '<p>'. $id .'<br/>'. $ age .'</p>';
?>
Related
I'm trying to retrieve a varchar value from my WordPress DB. I tried the following code without success. Also tried with get_results instead of get_row, my post just shows the HTML code without the "brand" value (PHP snippets are enabled). How can I show a scalar value from my DB in my posts, index..? Do I need to set up a connection again?
<?php
$db_brand = $wpdb->get_row( "SELECT brand FROM $wpdb->brands where id = 1" );
echo "<p>The brand in this post is {$db_brand}</p>";
?>
you get row, but need show column. use
<?php
$db_brand = (array)$wpdb->get_row( "SELECT brand FROM $wpdb->brands where id = 1" );
echo "<p>The brand in this post is {$db_brand['brand']}</p>";
?>
I am working on an existing HTML form used to collect data about a project and then inserts that project record into a MySQL database using PHP.
Inside the form, there is an input field named "staff[]". This field is a multi select element, that allows users to select more than one team member to handle the project.
<form action="" method="post">
<select multiple name="staff[]">
<option value="1">Mary</option>
<option value="2">Tyrone</option>
<option value="3">Rod</option>
<option value="4">Marcus</option>
<option value="5">David</option>
</select>
</form>
For example purposes, the user selects Tyrone, Rod and David for this particular project. If we insert the record at this point, the database only stores the first record value, which would be Tyrone's ID of 2. General practice is to store each instance in a separate table, however this is not our system and due to a restriction of 4 members for each project, management would prefer we insert a comma delimited array into each project's staff column for convenience.
In order to handle this issue, we've created a foreach loop that loops through the selected values from the dropdown menu, while ensuring a trailing comma doesn't exist:
// Add array into one variable
$staff_count = count($_POST['project_staff']);
$i = 0;
foreach($_POST['project_staff'] as $staff) {
if (++$i === $staff_count) {
$member_variable .= $staff;
} else {
$member_variable .= $staff . ", ";
}
}
After pressing the submit button, the above script is ran (which produces an array value of (2, 3, 5)) and the record is inserted into the 'projects' table with no issues.
HEREIN LIES THE PROBLEM.
Finally we have a view page, where we will call all employees assigned to a project, based on the query parameter, which would be the project ID. For example, if the previous project ID was 6, the following URL would be used:
site.com/project/view/?project=6
From this page, I am able to save the staff list using the following variable assignment:
$project = "SELECT * FROM projects WHERE project = 6";
$employee_chosen = $project['project_employee']
If the 'staff' column only accepted one employee (for example, just one value of 4), the variable would have a value of one number:
$project['project_employee'] (4)
I would then be able to run a secondary query for employees as such:
$employee_chosen = $project['project_employee']; (4)
query2 = "SELECT * FROM employees WHERE employee_ID = $employee_chosen";
This would very easily bring back the one employee that was entered in the "staff" column. However, we are dealing with an array in this column value (2, 3, 5) and so I have queried the following statement:
$employee_list = $project['project_staff']; (2,3,5)
$query_employees = "SELECT * FROM employees WHERE employee_id IN ($employee_list)";
When I run this query, I receive only the first result from the employee ID 2 (as initially stated with the HTML form).
However, if I use phpMyAdmin to directly type in the three numbers as a string:
$query_employees = "SELECT * FROM employees WHERE employee_id IN (2,3,5)";
I receive all three employee records.
Just to ensure that the column ARRAY was in fact behaving as a STRING, I initiated a var_dump on the value:
echo var_dump($project['project_staff']);
After which I received the following information:
string(7) "4, 5, 6"
Does anyone have any ideas?
I am satisfied with the idea that I am able to query the value, as before I received several non-object and array errors.
Thanks in advance for any assistance you may be able to provide.
I'm pretty sure from what you are saying that you are storing a string $employee_list that might be '2,3,4'. Then your IN ($employee_list) is really IN ('2,3,4') but what you really want is IN (2,3,4). There are various ways to get there but you could do
$employee_list = implode(','(explode(',', $employee_list));
I have been trying to get data from exploded values, but I am failing miserably and I am completely clueless despite all the researching I've been doing.
This is how the code looks like:
$array = explode(",", $hos['prop_owner']);
list($a) = $array;
$gu = $db->prepare("SELECT * FROM users WHERE user_id = :id");
$gu->execute(array(':id' => $a));
$dau = $gu->fetch();
echo $hos['prop_name']."<br><small>";
if(end($array)){
echo "<a href='/user/view/".$dau['user_id']."' style='color:#".$dau['user_colour']."'>".$dau['user_name']."</a></small><br>";
} else {
echo "<a href='/user/view/".$dau['user_id']."' style='color:#".$dau['user_colour']."'>".$dau['user_name']."</a>,";
}
Currently, the database field $hos['prop_owner'] contains the values "2,20" which are IDs of users (this field can potentially contain more IDs in the future). What I want to do is get all the user data from the exploded values, in this case 2 and 20, and then echo the information out in order as well.
Re-explanation:
I have a field in my database called prop_owner which is supposed to contain an unlimited number of user IDs, seperated by comma. Format: 1,2,3,4.
I want to take the value from this field, then somehow separate the user IDs and separately retrieve the usernames and echo them out.
Example result: Darren, Eva, Miles, Lisbeth
I hope I explained myself good enough to understand where I am trying to go with this.
Thanks in advance!
First of all the query will be like
SELECT * FROM users WHERE user_id in (2,20)
You need the data of both the users so the query will return all the data of all the ids that are being passed here..
You can directly pass here but you need to take care of security... or may be you can check how to pass values securely in such queries ...
Still green in php but I'm liking it. Anyways...
I have a table that retrieves information from my db which gets its data from a date search, so I want it to be retrieved in another table after being filtered.
I tried a couple of things including passing the variable that is being used in filtering it (date) into another window so that the table retrieves this information there with id as date from previous page.
On my search page i have this:
<?php
$tester = $_POST['Date'];
mysql_select_db($database_dbconnkk, $dbconnkk);
$query_equ = "SELECT * FROM daily_reports WHERE Date = '$tester' ORDER BY id ASC";
?>
And a table that repeats the same which is working.
I have a link that opens window to this page with an attempt to retrieve data from previous test.
<?php
$tester2 = $_Get['Date'];
Also tried passing Date as id:
(id=<?php echo $row_equ['Date']; ?>)
Suppose problem is here:
$tester2 = $_Get['Date'];
Variable names are case sensitive in PHP, so this line should look like:
$tester2 = $_GET['Date'];
instead. Everything else looks like it should work.
i got it. passed the date i was using on the filter in the same variable i was using to filter the records
?Date=<?php echo $tester; ?>
then on my new window i get the same into another variable(tester2)
$tester2 = $_GET['Date'];
select then echo in columns
$query_equ = "SELECT * FROM daily_reports WHERE Date = '$tester2' ORDER BY id ASC";
I have a form where I am trying to implement a tag system.
It is just an:
<input type="text"/>
with values separated by commas.
e.g. "John,Mary,Ben,Steven,George"
(The list can be as long as the user wants it to be.)
I want to take that list and insert it into my database as an array (where users can add more tags later if they want). I suppose it doesn't have to be an array, that is just what seems will work best.
So, my question is how to take that list, turn it into an array, echo the array (values separated by commas), add more values later, and make the array searchable for other users. I know this question seems elementary, but no matter how much reading I do, I just can't seem to wrap my brain around how it all works. Once I think I have it figured out, something goes wrong. A simple example would be really appreciated. Thanks!
Here's what I got so far:
$DBCONNECT
$artisttags = $info['artisttags'];
$full_name = $info['full_name'];
$tel = $info['tel'];
$mainint = $info['maininst'];
if(isset($_POST['submit'])) {
$tags = $_POST['tags'];
if($artisttags == NULL) {
$artisttagsarray = array($full_name, $tel, $maininst);
array_push($artisttagsarray,$tags);
mysql_query("UPDATE users SET artisttags='$artisttagsarray' WHERE id='$id'");
print_r($artisttagsarray); //to see if I did it right
die();
} else {
array_push($artisttags,$tags);
mysql_query("UPDATE users SET artisttags='$artisttags' WHERE id='$id'");
echo $tags;
echo " <br/>";
echo $artisttags;
die();
}
}
Create a new table, let's call it "tags":
tags
- userid
- artisttag
Each user may have multiple rows in this table (with one different tag on each row). When querying you use a JOIN operation to combine the two tables. For example:
SELECT username, artisttag
FROM users, tags
WHERE users.userid = tags.userid
AND users.userid = 4711
This will give you all information about the user with id 4711.
Relational database systems are built for this type of work so it will not waste space and performance. In fact, this is the optimal way of doing it if you want to be able to search the tags.