I had a custom field where user can insert text into it and thus change the database column name.
One of my pages function is to retrieve the value inside the custom column.The problem that I facing now is that i unable to retrieve the value.
For your information, I already create a function to get the name of the column.
In normal cases, i retrieve the value like this.
while($row = mysqli_fetch_assoc($result)) {
$companys[$i]['check_existing_user'] = $row['id'];
}
But for the dynamic one, I try to do something like this but it still wouldn't work.
while($row = mysqli_fetch_assoc($result)) {
$custom_field_1 = '\'customized_field_name("custom_field_1")\''; // return the column name and look like this -> 'custom_field_1'
$companys[$i]['custom_field_1'] = $row[$custom_field_1];
$i++;
}
I feel that the way I directly insert the variable is wrong but then I don't know what else i should do. Any help will be very appreciated.
if it's a PHP function you are talking about, then you have to call it like a PHP function:
$companys[$i]['custom_field_1'] = $row[customized_field_name("custom_field_1")];
or better first store the custom name in a variable and then use
$custom_field_1 = customized_field_name("custom_field_1");
while($row = mysqli_fetch_assoc($result)) {
$companys[]['custom_field_1'] = $row[$custom_field_1];
}
Related
I generate chart using jpgraph. I succesfully get data for the plot from database and i want the title also take from database. i already use this script
$sql = $this->db->select("title from table")->get()->first_row();
$title = $sql->title;
$graph->title->Set($title);
But that not work. can anyone solve this issue? thank you
This will help to get first_row along with field:
$this->db->select('title'); // your column
$this->db->from('table'); // your table
$result = $this->db->get()->result(); // get result
$title = $result->first_row()->title; // get ist row using first_row with your field name
$graph->title->Set($title); // as you are using for graph
Also note that, in CI function row() also return the ist row of your query in object form.
From the manual:
You can walk forward/backwards/first/last through your results using
these variations:
$row = $query->first_row()
$row = $query->last_row()
$row = $query->next_row()
$row = $query->previous_row()
Or if you want to print result in array instead of object than you can use a word 'array' as param, like:
$query->first_row(‘array’)
You can also follow the CI manual for better understanding: http://www.codeigniter.com/userguide3/database/results.html
I'm having a little problem with the codes given below. When I'm using the name="staff_number[]" then it insert the record with everything ok even if it is already in the database table and when i use name="staff_number" it does check the record and also give me alert box but when insert the record if it is not in the database it stores only the first number of the staff number like the staff no is 12345 it stores only 1. can anyone help in this record i think there is only a minor issue what I'm not able to sort out.
PHP Code:
<select placeholder='Select' style="width:912px;" name="staff_number[]" multiple />
<?php
$query="SELECT * FROM staff";
$resulti=mysql_query($query);
while ($row=mysql_fetch_array($result)) { ?>
<option value="<?php echo $row['staff_no']?>"><?php echo $row['staff_name']?></option>
<?php } ?>
</select>
Mysql Code:
$prtCheck = $_POST['staff_number'];
$resultsa = mysql_query("SELECT * FROM staff where staff_no ='$prtCheck' ");
$num_rows = mysql_num_rows($resultsa);
if ($num_rows > 0) {
echo "<script>alert('Staff No $prtCheck Has Already Been Declared As CDP');</script>";
$msg=urlencode("Selected Staff ".$_POST['st_nona']." Already Been Declared As CDP");
echo'<script>location.href = "cdp_staff.php?msg='.$msg.'";</script>';
}
Insert Query
$st_nonas = $_POST['st_nona'];
$t_result = $_POST['st_date'];
$p_result = $_POST['remarks'];
$arrayResult = explode(',', $t_result[0]);
$prrayResult = explode(',', $p_result[0]); $arrayStnona = $st_nonas;
$countStnona = count($arrayStnona);
for ($i = 0; $i < $countStnona; $i++) {
$_stnona = $arrayStnona[$i];
$_result = $arrayResult[$i];
$_presult = $prrayResult[$i];
mysql_query("INSERT INTO staff(st_no,date,remarks)
VALUES ('".$_stnona."', '".$_result."', '".$_presult."')");
$msg=urlencode("CDP Staff Has Been Added Successfully");
echo'<script>location.href = "cdp_staff.php?msg='.$msg.'";</script>';
}
Your $_POST['staff_number'] is actually an array.
So you have to access it like $_POST['staff_number'][0] here, 0 is a index number.
If the name of select is staff_number[] then $prtCheck will be a array so your check query must be in a loop to make sure your check condition.
if the name is staff_number then the below code is fine.
The answer of amit is right but I will complete it.
Your HTML form give to your PHP an array due to the use of staff_number[] with [] that it seems legit with the "multiple" attribute.
So you have to loop on the given values, you do it with a for and a lot of useless variables without really checking it. From a long time, we have the FOREACH loop structure.
I could help you more if i know what is the 'st_nona', st_date' and 'remarks' values.
According to your question you are getting difficulty in storing the data. This question is related to $_POST array.
Like your question we have selected following ids from the select : 1,2,3,4
It is only storing 1.
This is due to you have not used the loop when inserting the data.
Like below:
<?php
foreach($_POST['staffnumber'] as $staffnumber){
$query=mysql_query("select * from staff where staff_number =".$staffnumber);
if(mysql_num_rows($query)>0){
//action you want to perform
}else{
//action you want to perform like entering records etc. as your wish
}
}
?>
And I would like to suggest you that use the unique keys in database for field and use PHP PDO for database, as it is secure and best for OOPs.
Let me know if you have any queries.
So i have this so far..
if(isset($_POST['Decrypt']))
{
$dbinary = strtoupper($_POST['user2']);
$sqlvalue = "SELECT `value` FROM `license` WHERE `binary` = '$dbinary'";
$dvalue = mysql_query($sqlvalue) or die(mysql_error());
$dvalue = mysql_fetch_array($dvalue);
$dvalue['value'];
}
I have a field where the user enters a binary code which was encrypted. (The encrypt part works). This is supposed to retrieve the value from the database. When ever i do it, instead of the value showing up, it says "Array".
Please help me out.
This is because you can't just echo an array. You need to use functions like var_dump(); or print_r();
looks like you have more than one row in your table matching criteria. Try using while loop to retrieve data.
while($row = mysql_fetch_assoc($dvalue)){
//$row['value'];
}
I'm creating a table dynamically from a mysql database that gets fields name, email, city. The email column has emails that I'd like to have as "mailto:" links. Currently they display the email without the hyperlink. There's a 'filter' form on the page as well that when submitted will display only results that correspond with a name specified in the form textbox by the user.
I'm very novice at creating anything dynamic. What's the easiest way to display the email column as hyperlinks? I was thinking about using javascript to do a getElementByID loop for the second td of every tr and amend a "mailto:" the beginning using string manipulation. Maybe this is more practically done in PHP instead?
edit:
I realized the obvious solution to my question. I simply concatenated the a href mailto: before the echo of the php command that gets my email field from the sql db and displays it in the table.
This is, indeed, more practically done in PHP. You can use something like the following, assuming that $result contains the result of a MySQL SELECT statement which fetches the users.
while ($u = $result->fetch_assoc()) {
// Output other data
// ...
echo '' . $u['email'] . '';
// ...
}
If you're still using mysql instead of mysqli (which you shouldn't really be doing), then replace
while ($u = $result->fetch_assoc()) {
with
while ($u = mysql_fetch_assoc($result)) {
$db = new PDO(//your dsn, host and password);
$query = $db->prepare('SELECT name,email from users');
$query->execute(); while($row = $query->fetch(PDO::FETCH_ASSOC))
{
echo ''.$row['name'].'';
}
hello i want to create function with returning data, for example when i have the function advert i want to make it every time show what i need, i have the table id, sub_id, name, date, and i want to create the function that i can print every time what i need advert(id), advert(name), i want to make it to show every time what i need exactly and i want to save all my result in array, and every time grab the exactly row that i want
<?php
function advert($data){
$id = $_GET['id'];
$query = mysql_query("SELECT *FROM advertisement WHERE id = $id");
while($row = mysql_fetch_assoc($query)){
$data = array(
'id' => $row['id']
);
}
return $data;
}
echo advert($data['id']);
?>
but my result every time is empty, can you help me please?
There are so many flaws in this short piece of code that the only good advice would be to get some beginners tutorial. But i'll put some effort into explaining a few things. Hopefully it will help.
First step would be the line function advert($data), you are passing a parameter $data to the method. Now later on you are using the same variable $data in the return field. I guess that you attempted to let the function know what variable you wanted to fill, but that is not needed.
If I understand correctly what you are trying to do, I would pass in the $id parameter. Then you can use this function to get the array based on the ID you supplied and it doesnt always have to come from the querystring (although it could).
function advert($id) {
}
Now we have the basics setup, we want to get the information from the database. Your code would work, but it is also vulnerable for SQL injection. Since thats a topic on its own, I suggest you use google to find information on the subject. For now I'll just say that you need to verify user input. In this case you want an ID, which I assume is numeric, so make sure its numeric. I'll also asume you have an integer ID, so that would make.
function advert($id) {
if (!is_int($id))
return "possible SQL injection.";
}
Then I'll make another assumption, and that is that the ID is unique and that you only expect 1 result to be returned. Because there is only one result, we can use the LIMIT option in the query and dont need the while loop.
Also keep in mind that mysql_ functions are deprecated and should no longer be used. Try to switch to mysqli or PDO. But for now, i'll just use your code.
Adding just the ID to the $data array seems useless, but I guess you understand how to add the other columns from the SQL table.
function advert($id) {
if (!is_int($id))
return "possible SQL injection.";
$query = mysql_query("SELECT * FROM advertisement WHERE id = $id LIMIT 1");
$row = mysql_fetch_assoc($query);
$data = array(
'id' => $row['id']
);
return $data;
}
Not to call this method we can use the GET parameter like so. Please be advised that echoing an array will most likely not give you the desired result. I would store the result in a variable and then continue using it.
$ad = advert($_GET['id']);
if (!is_array($ad)) {
echo $ad; //for sql injection message
} else {
print_r($ad) //to show array content
}
Do you want to show the specific column value in the return result , like if you pass as as Id , you want to return only Id column data.
Loop through all the key of the row array and on matching with the incoming Column name you can get the value and break the loop.
Check this link : php & mysql - loop through columns of a single row and passing values into array
You are already passing ID as function argument. Also put space between * and FROM.
So use it as below.
$query = mysql_query("SELECT * FROM advertisement WHERE id = '".$data."'");
OR
function advert($id)
{
$query = mysql_query("SELECT * FROM advertisement WHERE id = '".$id."'");
$data = array();
while($row = mysql_fetch_assoc($query))
{
$data[] = $row;
}
return $data;
}
Do not use mysql_* as that is deprecated instead use PDO or MYSQLI_*
try this:
<?php
function advert($id){
$data= array();
//$id = $_GET['id'];
$query = mysql_query("SELECT *FROM advertisement WHERE id = $id");
while($row = mysql_fetch_assoc($query)){
array_push($data,$row['id']);
}
return $data;
}
var_dump($data);
//echo advert($data['id']);
?>