I am pulling stock data off of a trading API through a loop based on an aray of stock symbols. This spits out xml data which I then parse and input into a MySQL database for analysis later. This is an example of the fields I'm inserting into the database (I can add more):
$sql = "INSERT into securities (symbol, ask, ask_time, asksz)
VALUES ('$symbol', '$ask', '$ask_time','$asksz')";
My current query pulls all of the data and lists it in rows, entry after entry into a table:
$sql = "SELECT id, symbol, ask, ask_time, asksz FROM securities";
if($result = mysqli_query($conn, $sql)){
if(mysqli_num_rows($result) > 0){
echo "<table>";
echo "<tr>";
echo "<th>id</th>";
echo "<th>symbol</th>";
echo "<th>ask</th>";
echo "<th>ask_time</th>";
echo "<th>asksz</th>";
echo "</tr>";
while($row = mysqli_fetch_array($result)){
echo "<tr>";
echo "<td>" . $row['id'] . "</td>";
echo "<td>" . $row['symbol'] . "</td>";
echo "<td>" . $row['ask'] . "</td>";
echo "<td>" . $row['ask_time'] . "</td>";
echo "<td>" . $row['asksz'] . "</td>";
echo "</tr>";
}
echo "</table>";
Is there a way to compare two separate stocks side by side? For instance, structure my query in order to pull those 4 fields only for 'AAPL', then in the same row pull the same data for 'GOOG'?
Related
I am fairly new to working with PHP and WordPress. I tried exploring how to escape and sanitize, and I got a little confused along the way.
I'd like to echo out the contents of an entire table from the database. I am unsure whether there is a better way of both creating a table in a more structured way, and I can't figure out how to escape the data when I don't select specific data from the database. Maybe i'm just confused. Any help or pointers is highly appreciated.
I found the code somewhere on Stack Overflow, edited a little and tried to understand it. I understand it now, but I am still confused on where to go from here.
<?php
$results = $wpdb->get_results( "SELECT * FROM user"); // Query to fetch data from database table and storing in $results
if(!empty($results)) // Checking if $results have some values or not
{
echo "<table width='100%' border='0' id='userTable'>"; // Adding <table> and <tbody> tag outside foreach loop so that it wont create again and again
echo "<tbody>";
echo "<tr>"; // Adding rows of table inside foreach loop
echo "<th>E-mail</th>" . "<th>Fornavn</th>" . "<th>Efternavn</th>" . "<th>Registreret den</th>";
echo "</tr>";
foreach($results as $row){ //putting the user_ip field value in variable to use it later in update query
echo "<td colspan='3'><hr size='2'></td>";
echo "<tr>";
echo "<td>" . esc_attr($row->email) . "</td>" . "<td>" . $row->firstname . "</td>" . "<td>" . $row->lastname . "</td>" . "<td>" . $row->signuptime . "</td>"; //fetching data from user_ip field
}
echo "</tbody>";
echo "</table>";
}
?>
This part...
foreach($results as $row){
//putting the user_ip field value in variable to use it later in update query
echo "<td colspan='3'><hr size='2'></td>";
echo "<tr>";
echo "<td>" . esc_attr($row->email) . "</td>" . "<td>" . $row->firstname . "</td>"
. "<td>" . $row->lastname . "</td>" . "<td>" . $row->signuptime . "</td>";
//fetching data from user_ip field
}
...would product html like
{3 columns}{content}{3 columns end}{row start}
{column start}{content}{column end} * 4
{3 columns}{row start}
{column start}{content}{column end} * 4
{3 columns}{row start}
{column start}{content}{column end} * 4
etc
What you want in your loop is probably:
{row start}{4 columns}{content}{4 columns end}{row end}
{row start}{column start}{content}{column end} * 4{row end}
which would look like this:
foreach($results as $row){
//putting the user_ip field value in variable to use it later in update query
echo "<tr><td colspan='4'><hr size='2'></td></tr>";
echo "<tr><td>" . esc_attr($row->email) . "</td>" . "<td>" . $row->firstname . "
</td><td>" . $row->lastname . "</td>" . "<td>" . $row->signuptime . "</td></tr>";
//fetching data from user_ip field
}
In your SQL-statement on your first row: SELECT * FROM user , all fields are returned into the $results array of objects. If you want to specify which fields are returned you simply include them instead of the *, e.g. SELECT id, email, firstname, lastname FROM user
I am trying to print the results of this query, but it only prints out the first row. Why is that?
if (isset($_GET['consumiperstanza'])) {
$num_stanza=$_GET['num_stanza'];
$data1=$_GET['data1'];
$data2=$_GET['data2'];
$query="SELECT stanze.num_stanza,consumi.cod_consumo, servizi.nome,
consumi.quantita, servizi.prezzo, consumi.data_c
FROM consumi, servizi, stanze
WHERE stanze.num_stanza=consumi.num_stanza
AND servizi.cod_servizio=consumi.cod_servizio
AND stanze.num_stanza='$num_stanza'
AND consumi.data_c BETWEEN '$data1' AND '$data2'
GROUP BY stanze.num_stanza";
$risultato = $conn->query($query);
if(mysqli_num_rows($risultato) > 0){
echo "<table border=1 bgcolor= 'white' align='center'>";
echo "<tr>";
echo "<th>NUMERO STANZA</th>";
echo "<th>CODICE CONSUMO</th>";
echo "<th>NOME</th>";
echo "<th>QUANTITÀ</th>";
echo "<th>PREZZO</th>";
echo "<th>DATA</th>";
echo "</tr>";
while($riga = mysqli_fetch_array($risultato)){
echo "<tr>";
echo "<td>" . $riga[0] . "</td>";
echo "<td>" . $riga[1] . "</td>";
echo "<td>" . $riga[2] . "</td>";
echo "<td>" . $riga[3] . "</td>";
echo "<td>" . $riga[4] . "</td>";
echo "<td>" . $riga[5] . "</td>";
echo "</tr>";
}
echo "</table><br>";
}
}
This is part of your criteria
AND stanze.num_stanza='$num_stanza'
But you're also doing this.
GROUP BY stanze.num_stanza
So, you'll only get one group.
Additionally, all the other columns in your SELECT are not well-defined since they are not included in the GROUP BY and are not aggregate expressions. Newer versions of MySQL actually will not allow you to do this by default. It is possible in older versions, but may not give you the results you expect.
The MySQL 5.6 manual:
... this is useful primarily when all values in each nonaggregated column not named in the GROUP BY are the same for each group. The server is free to choose any value from each group, so unless they are the same, the values chosen are nondeterministic.
I have the below table in my site...
and what I want is that when i click on the read more link to redirect me to the page view_announcement.php and in this page to display me the whole data for this specific row.
For example, if we click on the link in the second row I want in the view_announcement.php to load all the data for this specific row.
My code in order to display this table is this...
<?php
$q = ($_GET['q']);
$con = mysqli_connect('localhost','root','smogi','project');
if (!$con) {
die('Could not connect: ' . mysqli_error($con));
}
mysqli_select_db($con,"project");
$sql="SELECT author,category,subject,content FROM announcements WHERE category = '".$q."'";
$result = mysqli_query($con,$sql);
echo "<table>
<tr>
<th>Author</th>
<th>Category</th>
<th>Subject</th>
<th>Content</th>
</tr>";
while($row = mysqli_fetch_array($result)) {
echo "<tr>";
echo "<td>" . $row['author'] . "</td>";
echo "<td>" . $row['category'] . "</td>";
echo "<td>" . $row['subject'] . "</td>";
echo "<td>" . 'Read More' . "</td>";
echo "</tr>";
}
echo "</table>";
mysqli_close($con);
?>
The view_announcement.php file doesn't contain any code yet because i dont know what to write.
One way to do it is to append a query variable to the "Read More" links. You'll probably need a unique identifier, such as an ID number, on your announements table. If you don't have one yet, I suggest adding one and setting it up to auto-increment.
You would want to modify your query to include the unique ID number:
$sql="SELECT id,author,category,subject,content FROM announcements WHERE category = '".$q."'";
Then you would modify the loop which prints your table out to include those unique IDs in the URL to view_announcement.php
while($row = mysqli_fetch_array($result)) {
echo "<tr>";
echo "<td>" . $row['author'] . "</td>";
echo "<td>" . $row['category'] . "</td>";
echo "<td>" . $row['subject'] . "</td>";
echo "<td>" . 'Read More' . "</td>";
echo "</tr>";
}
And in your file view_announcement.php, you would make another SQL query to get the full data for a specific row, like this:
$sql="SELECT * FROM announcements WHERE ID = '".$_GET['id']."'";
If you click any button, that redirects to view_announcement.php file, where you can get the subject values.
Use that subject values in your query to get all the details which relates to that subject.
I have a database and I want the user to be able to have an input into what comes out. i.e
Select from Table where example = user input from box **(input by the user)**
Im guessing what I need is a variable to hold the value that then goes into the statement. I know how to get the value from the input box with script but can I use it like:
select * From handover WHERE hdate = variable. However I am guessing someone is going to talk to me about security if its even possible.
<html><body>
<input>User input</input> //That needs to go into statement
<?php
include 'config.php';
$result = mysqli_query($con,"SELECT * FROM handover WHERE hdate = **user input**;");
echo "<table border='1'>
<tr>
<th>hdate</th>
<th>Delay</th>
<th>Health and Safety</th>
<th>Non Vsa</th>
<th>VSA</th>
<th>Dar</th>
<th>Other</th>
<th>Hour</th>
</tr>";
while($row = mysqli_fetch_array($result)) {
echo "<tr>";
echo "<td>" . $row['hdate'] . "</td>";
echo "<td>" . $row['hdelay'] . "</td>";
echo "<td>" . $row['hs'] . "</td>";
echo "<td>" . $row['nv'] . "</td>";
echo "<td>" . $row['vsa'] . "</td>";
echo "<td>" . $row['dar'] . "</td>";
echo "<td>" . $row['other'] . "</td>";
echo "<td>" . $row['hour'] . "</td>";
echo "</tr>";
}
echo "</table>";
mysqli_close($con);
?>
Any help is welcome and advice on the best language to use for this.
Kind Regards
Fintan
first of all, this question has nothing to do with javascript & ajax. so you can delete those tags.
you want to show/search data from mysql.
$result = mysqli_query($con,"SELECT * FROM handover WHERE hdate = '".$_POST['abc']."' ");
this is when you want to check if hdate column have exact data as user input ( $_POST['abc'] ).
and also don't forget to use mysqli_real_escape_string
you can learn common mysql pattern queries from here: http://dev.mysql.com/doc/refman/5.0/en/pattern-matching.html
I'm having some real trouble finding information on this topic and I would be very appreciative for any help. In short I have a form where users select a category from a drop down list, enter some contents, and hit submit which goes to SQL. Each category in the dropdown is color coded:
<option STYLE="color: #00CC66;" value="Option_1">Option_1</option>
<option STYLE="color: #0066CC;" value="Option_2">Option_2</option>
<option STYLE="color: #996633;" value="Option_3">Option_3</option>
etc
Then I have a php that pulls up the stored submitted data (categories and contents) into a table on that same page sorted by date.
<?php
$con=mysqli_connect("localhost","myuser","mypassword","mydb");
// Check connection
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
$result = mysqli_query($con,"SELECT * FROM mytable order by date DESC");
echo "<table border='1'>
<tr>
<th>Category</th>
<th>Contents</th>
<th>Date/Time</th>
</tr>";
while($row = mysqli_fetch_array($result))
{
echo "<tr>";
echo "<td>" . $row['category'] . "</td>";
echo "<td>" . $row['contents'] . "</td>";
echo "<td>" . $row['date'] . "</td>";
echo "</tr>";
}
echo "</table>";
mysqli_close($con);
?>
My question is, when echo places the information in the table, is there a way I can get 'category' showing up in the same colors as the user form? (IE, on the table, Option_1 would show up as #00CC66, Option 2 as 0066CC, etc...)
Basically I want the actual category text on the fetched table to display the same as it is in the drop down form. I don't mind if I need to manually set each one as the categories are limited, I just have no clue where to begin on this one. Appreciate any help in advance!
Yes, but you would need to either change the value of the select box to the colour or manually do it like this:
function getColor($strOption)
{
switch ($strOption)
{
case "Option_1":
return "#00CC66";
case "Option_2":
return "#0066CC";
#etc
}
}
Then in your while loop:
while($row = mysqli_fetch_array($result))
{
echo "<tr>";
echo "<td><font color='".getColor($row['category'])."'> " . $row['category'] . "</font></td>";
echo "<td>" . $row['contents'] . "</td>";
echo "<td>" . $row['date'] . "</td>";
echo "</tr>";
}