Hey,
im new to PHP (started last week)
ive got 10 lines of info in a SQLDB
im doing the same thing to all 10:
$db_line1 = mysql_query("SELECT * FROM messages WHERE message_id='1'");
$line1 = mysql_fetch_array($db_line1);
unset ($line1['0']);
unset ($line1['1']);
unset ($line1['2']);
$db_line2 = mysql_query("SELECT * FROM messages WHERE message_id='2'");
$line2 = mysql_fetch_array($db_line2);
unset ($line2['0']);
unset ($line2['1']);
unset ($line2['2']);
Etc. etc. all the way to $line10, could i use something like the "foreach" function?
$query = mysql_query("SELECT * FORM messages");
while($result = mysql_fetch_assoc($query))
{
echo "<pre>";
print_r($result);
echo "</pre>";
}
unset($result);
Answering to the comment ("can I get them in their own arrays"):
$query = mysql_query("SELECT * FORM messages") or die(mysql_error());
$messages = array();
while($result = mysql_fetch_assoc($query))
{
$messages[] = $result;
}
unset($result);
You can then iterate over the $messages.
EDIT following author's comment
Take all rows at once
$db_line = mysql_query("SELECT * FROM messages WHERE message_id >= '1'" .
" AND message_id <='10'");
$rows = array();
while ($line = mysql_fetch_assoc($db_line))
{
$rows[$line['message_id']] = $line;
}
This way you have an array of rows (ie an array of arrays).
To get the row for message_id 3, just do
$row = $rows[3];
and to access the (for instance) name column,
$row['name']
or
$rows[3]['name']
You may use dynamically created variables in php:
for ($i = 0; $i < 3; $i++){
unset(${'line'.$i});
}
EDIT:
How it works (example):
$var1 = "hel";
$var2 = "lo";
$hello = "xxx";
echo ${$var1.$var2}; // outputs "xxx"
Using ${'xyz'.$variable} will give you the variable with name 'xyz'.$variable. Notice that
"'xyz'.$variable" gets determined first.
$db_lines = mysql_query("SELECT * FROM messages");
while ($line = mysql_fetch_array($db_lines))
{
unset ($line['0']);
unset ($line['1']);
unset ($line['2']);
}
Related
i have a trouble, when select table user in yii2 , data no show up
$sqlGetuser = "select * from user ";
$sqlquery = Yii::$app->db->createCommand($sqlGetuser)->query();
foreach($sqlquery as $row){
// echo $row;
// echo "saya";
echo $row['username'];
}
The error is in this line:
$sqlquery = Yii::$app->db->createCommand($sqlGetuser)->query();
query() returns yii\db\DataReader. To return array of rows use queryAll():
$rows = Yii::$app->db->createCommand($sqlGetuser)->queryAll();
If you want to use query(), you need to read data differently:
$command = $connection->createCommand('SELECT * FROM "user"');
$reader = $command->query();
while ($row = $reader->read()) {
$rows[] = $row;
}
// equivalent to:
foreach ($reader as $row) {
$rows[] = $row;
}
// equivalent to:
$rows = $reader->readAll();
See more in official docs.
Also quote table name as adviced since it's reserved word.
Hi I would like to display the number of item in the database. The following is the php code:
$jobid = $_SESSION['SESS_MEMBER_JOB'];
$data = "SELECT * FROM attributes WHERE jobid = $jobid";
$attribid = mysql_query($data) or die(mysql_error);
$count = "SELECT count(*) FROM attributes WHERE jobid = $jobid";
$database_count = mysql_query($count);
//Declare the Array
$DuetiesDesc = array();
print_r ($database_count);
But instead of getting the desired result, I get :
Resource id #14
Please Assist
Should get it out of the way that you shouldn't be using mysql_* see Why shouldn't I use mysql_* functions in PHP?
See the code below... explanations are in comments
$jobid = $_SESSION['SESS_MEMBER_JOB'];
// escape variables using mysql_real_escape_string
$data = "SELECT * FROM attributes WHERE jobid =".mysql_real_escape_string($jobid);
$attrRes = mysql_query($data) or die(mysql_error());
// I'm assuming you want all of the attributes return in this query in an array
$attributes = array();
while($row = mysql_fetch_assoc($attrRes)){
$attributes[] = $row;
}
// Now if you want the count we have all of the records in the attributes array;
$numAttributes = count($attributes);
// here is an example of how you can iterate through it..
print "<p>Found ".$numAttributes." attributes</p>";
print "<table>";
foreach($attributes as $row){
print "<tr>";
foreach ($row as $cell){
print "<td>".$cell."</td>";
}
print "</tr>";
}
print "</table>";
Try this
<?php
$jobid = $_SESSION['SESS_MEMBER_JOB'];
$data = "SELECT * FROM attributes WHERE jobid =$jobid";
$attribid = mysql_query($data) or die(mysql_error);
$count=mysql_num_rows($attribid);
echo $count;
?>
try this
$jobid = $_SESSION['SESS_MEMBER_JOB'];
$data = "SELECT *FROM attributes WHERE jobid =$jobid";
$attribid = mysql_query($data) or die(mysql_error);
$count = "SELECT count(*) FROM attributes WHERE jobid = $jobid";
$database_count = mysql_query($count);
//Declare the Array
$DuetiesDesc = array();
$database_count=mysql_fetch_assoc($database_count);
echo $database_count['count(*)'];
The problem I have is when I echo or print the following variables, the data I receive is that of the last business listed in my table only.
At present no matter the listing I click I get the same set of data for the last business returned.
As you can see in the below code I am passing the business_name from the clicked listing to be used in my query to find the relevant business profile information.
$business_name = mysql_real_escape_string($_GET['business_name']);
$query = "SELECT
business_id,
category,
years_recommended,
profile_size,
business_name,
established,
employees,
service,
strengths,
ideal_for,
reassurance
FROM
business_data
WHERE
business_name = '$business_name'
AND
profile_size = 'A'
OR
profile_size = 'B'
OR
profile_size = 'C'
OR
profile_size = 'D'
OR
profile_size = 'E'";
$result = mysql_query($query, $dbc)
or die (mysql_error($dbc));
while($row = mysql_fetch_array($result)) {
$business_id = $row["business_id"];
$profile_size = $row["profile_size"];
$category = $row["category"];
$years = $row["years_recommended"];
$established = $row["established"];
$employees = $row["employees"];
$service = $row["service"];
$strengths = $row["strengths"];
$ideal_for = $row["ideal_for"];
$reassurance = $row["reassurance"];
}
echo...
If you need more information please let me know.
Is there anything wrong with my code?
Many thanks in advance.
Your echo call is outside the fetch loop, so you'll only see the last result even though the others were returned.
while($row = mysql_fetch_array($result)) {
$business_id = $row["business_id"];
$profile_size = $row["profile_size"];
$category = $row["category"];
$years = $row["years_recommended"];
$established = $row["established"];
$employees = $row["employees"];
$service = $row["service"];
$strengths = $row["strengths"];
$ideal_for = $row["ideal_for"];
$reassurance = $row["reassurance"];
// Echo **inside** the loop
echo...
}
If you wish, you can store all the results in a large array, which can then be used anywhere subsequently in your script, as many times as needed:
// Array for all results
$results = array();
while($row = mysql_fetch_array($result)) {
// Append each row fetched onto the big array
$results[] = $row;
}
// Now use it as needed:
foreach ($results as $r) {
echo $r['profile_size'];
print_r($r);
}
your echo should be inside the loop
The first question is how to run a function using the URL, I have the following function:
function do_curl($start_index,$stop_index){
// Do query here to get all pages with ids between start index and stop index
$query = "SELECT * FROM xxx WHERE xxx >= $start_index and xxx <= $stop_index";
Now when I'm trying to do curl.php?start_index=0&stop_index=2 this is not working but when i delete the function and WHERE idnum = 1 it is working.
Now the second question is how 'compile' all the fields from the rows to arrays? I have the current code:
$query = "SELECT * FROM fanpages";
$result = mysql_query($query) or die(mysql_error());
while ($row = mysql_fetch_array($result))
{
$fanpages_query = '\'http://graph.facebook.com/'.$row['page_id'].'\', ';
echo $fanpages_query;
}
$fanpages = array($fanpages_query);
$fanpages_count = count($fanpages);
echo $fanpages_count;
echo $fanpages_query; returning
'http://graph.facebook.com/AAAAAA', 'http://graph.facebook.com/BBBBBBB', 'http://graph.facebook.com/CCCCCCCC',
(I don't have an idea how to do it in a different way, also when im doing it in such a way i can't delete the final comma which will return PHP-error.)
echo $fanpages_count; returns 1 and like you can see i have 3 there.
Thanks in advance guys!
Do a function call to do the query
function do_curl($start_index, $stop_index){
...
}
$fanpages = do_curl($_GET['start_index'], $_GET['stop_index']);
For your second question, you can use arrays and the implode function to insert commas:
while ($row = mysql_fetch_array($result))
{
$fanpages_query[] = 'http://graph.facebook.com/'.$row['page_id'];
}
return $fanpages_query;
Then use implode to print them out:
echo implode(',', $fanpages);
The whole code:
function do_curl($start_index = 0, $stop_index = null) {
$queryIfThereIsNoStartIndex = '';
$queryIFThereIsNoStopIndex = '';
$queryIfBothStartAndStopIndexAreMissing = '';
$result = mysql_query($query) or die(mysql_error());
while ($row = mysql_fetch_array($result))
{
$fanpages_query[] = 'http://graph.facebook.com/'.$row['page_id'];
}
return $fanpages_query;
}
$fanpages = do_curl($_GET['start_index'], $_GET['stop_index']);
$fanpages_count = count($fanpages);
echo implode(',', $fanpages);
And you should totally use mysql_escape_string for escaping the values you add to the query.
I am using the code below to get information from a database and make it into JSON (it may be wrong).
Unfortunately it won't load in my web browser, it just says it's loading but it doesn't finish. Please can you tell me what I am doing wrong.
$query = mysql_query("SELECT * FROM Posts ORDER BY date DESC") or die(mysql_error());
$array = array();
while ($row = mysql_fetch_assoc($query)) {
$array[] = $row;
$postID = $row['id'];
while ($ra = mysql_fetch_assoc(mysql_query("SELECT * FROM Comments WHERE postID = '$postID'"))) {
$array['comments'] = $ra;
}
while ($rd = mysql_fetch_assoc(mysql_query("SELECT * FROM Likes WHERE postID = '$postID'"))) {
$array['likes'] = $rd;
}
}
echo json_encode($array);
You are executing mysql_query in the infinite loop:
on each iteration you query the database, and fetch the first row. Change it to
$res = mysql_query("SELECT * FROM Comments WHERE postID = '$postID'");
if (!$res)
{
// handle error
}
while ($ra = mysql_fetch_assoc($res))
{
....
}
And the same for your second query.