I am using jqplot to show data in a graph.I am able to fetch data in the array ,but I have a small problem
to plot data the format is
[["Pens",10],["Pencils",30],["Erasers",40],["Charts",3]]
I am getting data in the following format
[["Pens"],["10"],["Pencils"],["30"],["Erasers"],["40"],["Charts"],["3"]]
my code is as follows
PHP Code
$dbname = 'dbname';
$username = 'root';
$password = 'password1!';
try {
/* Establish the database connection */
$conn = new PDO("mysql:host=localhost;dbname=$dbname", $username, $password);
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$result = $conn->query("SELECT Compliancestatus,value FROM COUNT_VALUE WHERE Zone='PZ' and country='AU' and `Compliancestatus` is not null");
$jsonTable = json_encode($rows);
print_r($jsonTable);
} catch (PDOException $e) {
echo 'ERROR: ' . $e->getMessage();
}
//mysql_close($conn);
$conn = null;
$rows = array();
foreach ($result as $r) {
$rows[] = array($r['Compliancestatus']);
// Values of each slice
$rows[] = array($r['value']);
}
please help me in this regard.
Change this
$rows[] = array($r['Compliancestatus']);
// Values of each slice
$rows[] = array($r['value']);
To
$rows[] = array($r['Compliancestatus'],(int)$r['value']);
Related
Function getUsers_Test() can retrieve data with the limit of 10 rows only while my getUsers_Orig() cannot retrieve any records **my record in the database is almost 50 rows*. No error, no warning. (PHP version 5.5.12)
function getUsers_Test(){
$sql = "SELECT TOP 10 a.user_name, a.user_level, a.user_status, b.* FROM user_access a, user_details b WHERE a.emp_code = b.emp_code ORDER BY a.id DESC";
try{
$data = array();
$db = null;
$db = connectDB();
$stmt = $db->prepare($sql);
$stmt->execute();
$data = $stmt->fetchAll();
}catch(PDOException $e){
$data['message'] = "Error: " . $e;
}
echo json_encode($data);
}
function getUsers_Orig(){
$sql = "SELECT a.user_name, a.user_level, a.user_status, b.* FROM user_access a, user_details b WHERE a.emp_code = b.emp_code ORDER BY a.id DESC";
try{
$data = array();
$db = null;
$db = connectDB();
$stmt = $db->prepare($sql);
$stmt->execute();
$data = $stmt->fetchAll();
}catch(PDOException $e){
$data['message'] = "Error: " . $e;
}
echo json_encode($data);
}
function connectDB() {
$dbuser = "myusername";
$dbpass = "mypassword";
$dbh = new PDO('odbc:databaseName', $dbuser, $dbpass);
$dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
return $dbh;
}
You could try catching a general exception instead of the PDOException
try
{
// ...
} catch (\Exception $e) {
// ...
}
The size of data is not a problem here, the data I was fetching has a special character (A‘ for Ñ). I use to add charset UTF-8 in my connection but still, I wasn't able to fetch it.
This problem occurs when I perform Generate Script and extract data from MSSQL instead of Backup and Restore. So when I execute the script from the Generate Script feature of MSSQL, the character changed and I didn't notice it.
I am just not making a connection here, and im not getting search results that are helping me enlighten myself.
I am pulling data from mysql into an array. But I am tottaly missing how I reference a specific row later.
try {
$conn = new PDO('mysql:host=localhost;dbname=FermentorDB', $username, $password);
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$chamberstate = $conn->query('SELECT * FROM ChamberState' . $conn->quote($mac));
foreach($chamberstate as $row) {
$chamber = $row['Chamber'];
$schedule = $row['Schedule'];
$runningnow = $row['RunningNow'];
$temp = $row['ChangingTemp'];
$array = array($chamber,$schedule,$runningnow,$temp);
}
} catch(PDOException $e) {
echo 'ERROR: ' . $e->getMessage();
Ok, so all the data is in the array. But how do I , say, print the $schedule where $chamber == 1 ?
I feel so dumb for not getting this.....
You were close with your original code but the $array variable was being overwritten each time through the loop. If you need to access the values throughout your page ou should be able to do so with an approach like this.
<?php
try {
$conn = new PDO('mysql:host=localhost;dbname=FermentorDB', $username, $password);
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$chamberstate = $conn->query('SELECT * FROM ChamberState' . $conn->quote($mac));
/* Populate this array for later use */
$chambers=array();
foreach( $chamberstate as $row ) {
$chamber = $row['Chamber'];
$schedule = $row['Schedule'];
$runningnow = $row['RunningNow'];
$temp = $row['ChangingTemp'];
/* This will overwrite any values in the $array variable with each iteration through the loop */
/*
$array = array( $chamber, $schedule, $runningnow, $temp );
*/
$chambers[]=array( 'chamber'=>$chamber, 'schedule'=>$schedule, 'running'=>$runningnow, 'temp'=>$temp );
}
/* later, when you need to access the various values, you can reference via the index */
echo $chambers[ 1 ]['chamber'];
/* or */
echo $chambers[ 23 ]['schedule'];
} catch(PDOException $e) {
echo 'ERROR: ' . $e->getMessage();
}
?>
<?php
try {
$conn = new PDO('mysql:host=localhost;dbname=FermentorDB', $username, $password);
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$chamberstate = $conn->query('SELECT * FROM ChamberState' . $conn->quote($mac));
$caray = array();
foreach($chamberstate as $row) {
$caray[$row['Chamber']]['Chamber'] = $row['Chamber'];
$caray[$row['Chamber']]['Schedule'] = $row['Schedule'];
$caray[$row['Chamber']]['RunningNow'] = $row['RunningNow'];
$caray[$row['Chamber']]['ChangingTemp'] = $row['ChangingTemp'];
}
} catch(PDOException $e) {
echo 'ERROR: ' . $e->getMessage();
}
print_r($carray['1']);
?>
is anyone able to find out what went wrong in this code below? It just shows a blank page. I'm new to PDO, always used mysqli but someone told me to try PDO since my page had problems showing arabic characters.
<html>
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
<?php
/* Connect to an ODBC database using driver invocation */
$dsn = 'mysql:dbname=testdb;host=127.0.0.1;charset=UTF8;'
$user = 'dbuser'; // don't hardcode this...store it elsewhere
$password = 'dbpass'; // this too...
try {
$dbh = new PDO($dsn, $user, $password);
} catch (PDOException $e) {
echo 'Connection failed: ' . $e->getMessage();
}
$sql = "SELECT :column FROM :table";
$opts = array(
':column' => 'Name',
':table' => 'Mothakirat'
);
$dbh->beginTransaction();
$statement = $dbh->prepare($sql);
if ($statement->execute($opts)) {
$resultArray = array(); // If so, then create a results array and a temporary one
$tempArray = array(); // to hold the data
while ($row = $result->fetch_assoc()) // Loop through each row in the result set
{
$tempArray = $row; // Add each row into our results array
array_push($resultArray, $tempArray);
}
echo json_encode($resultArray); // Finally, encode the array to JSON and output the results
}
$dbh->commit();
</html>
This has no parse errors checked in my IDE. I use netbeans, its very good and available on several platforms.
<html>
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
<?php
/* Connect to an ODBC database using driver invocation */
$dsn = 'mysql:dbname=testdb;host=127.0.0.1;charset=UTF8;';
$user = 'dbuser'; // don't hardcode this...store it elsewhere
$password = 'dbpass'; // this too...
try {
$dbh = new PDO($dsn, $user, $password);
} catch (PDOException $e) {
echo 'Connection failed: ' . $e->getMessage();
}
$sql = "SELECT :column FROM :table";
$opts = array(
':column' => 'Name',
':table' => 'Mothakirat'
);
$dbh->beginTransaction();
$statement = $dbh->prepare($sql);
if ($statement->execute($opts)) {
$resultArray = array(); // If so, then create a results array and a temporary one
$tempArray = array(); // to hold the data
while ($row = $result->fetch_assoc()) // Loop through each row in the result set
{
$tempArray = $row; // Add each row into our results array
array_push($resultArray, $tempArray);
}
echo json_encode($resultArray); // Finally, encode the array to JSON and output the results
}
$dbh->commit();
?>
</html>
i want to get the current max size of my DB. I have found the statements an checked it out. It works fine in VS2012 SQL Explorer. But when im using php im geting no data.
This is my function:
function getLoad() {
$conn = connect();
$string = 'DATABASEPROPERTYEX ( 'database' , 'MaxSizeInBytes' )';
$stmt = $conn->query($string);
return $stmt->fetchAll(PDO::FETCH_NUM);
}
The problem is that i get an error in fetching the $stmt. Error is:
can not fetchAll(11)
This code will print the database edition and max size in GB:
<?php
function get_database_properties($server, $database, $username, $password) {
try {
$conn = new PDO ("sqlsrv:server=tcp:{$server}.database.windows.net,1433; Database={$database}", $username, $password);
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$conn->setAttribute(constant('PDO::SQLSRV_ATTR_DIRECT_QUERY'), true);
$query = "SELECT CONVERT(NVARCHAR(128), DATABASEPROPERTYEX ('{$database}', 'Edition')) as 'Edition', " .
"CONVERT(DECIMAL,DATABASEPROPERTYEX ('{$database}', 'MaxSizeInBytes'))/1024/1024/1024 AS 'MaxSizeInGB'";
$stmt = $conn->query($query);
$row = $stmt->fetch();
$conn = null;
return $row;
}
catch (Exception $e) {
die(print_r($e));
}
}
$db_properties = get_database_properties("yourserver", "yourdatabase", "youruser", "yourpassword");
print("Edition={$db_properties['Edition']} MaxSizeInGB={$db_properties['MaxSizeInGB']}\n");
?>
i'm building an website using php and html, im used to receiving data from a database, aka Dynamic Website, i've build an CMS for my own use.
Im trying to "simplify" the receiving process using php and functions.
My Functions.php looks like this:
function get_db($row){
$dsn = "mysql:host=".$GLOBALS["db_host"].";dbname=".$GLOBALS["db_name"];
$dsn = $GLOBALS["dsn"];
try {
$pdo = new PDO($dsn, $GLOBALS["db_user"], $GLOBALS["db_pasw"]);
$stmt = $pdo->prepare("SELECT * FROM lp_sessions");
$stmt->execute();
$row = $stmt->fetchAll();
foreach ($row as $row) {
echo $row['session_id'] . ", ";
}
}
catch(PDOException $e) {
die("Could not connect to the database\n");
}
}
Where i will get the rows content like this: $row['row'];
I'm trying to call it like this:
the snippet below is from the index.php
echo get_db($row['session_id']); // Line 22
just to show whats in all the rows.
When i run that code snippet i get the error:
Notice: Undefined variable: row in C:\wamp\www\Wordpress ish\index.php
on line 22
I'm also using PDO just so you would know :)
Any help is much appreciated!
Regards
Stian
EDIT: Updated functions.php
function get_db(){
$dsn = "mysql:host=".$GLOBALS["db_host"].";dbname=".$GLOBALS["db_name"];
$dsn = $GLOBALS["dsn"];
try {
$pdo = new PDO($dsn, $GLOBALS["db_user"], $GLOBALS["db_pasw"]);
$stmt = $pdo->prepare("SELECT * FROM lp_sessions");
$stmt->execute();
$rows = $stmt->fetchAll();
foreach ($rows as $row) {
echo $row['session_id'] . ", ";
}
}
catch(PDOException $e) {
die("Could not connect to the database\n");
}
}
Instead of echoing the values from the DB, the function should return them as a string.
function get_db(){
$dsn = "mysql:host=".$GLOBALS["db_host"].";dbname=".$GLOBALS["db_name"];
$dsn = $GLOBALS["dsn"];
$result = '';
try {
$pdo = new PDO($dsn, $GLOBALS["db_user"], $GLOBALS["db_pasw"]);
$stmt = $pdo->prepare("SELECT * FROM lp_sessions");
$stmt->execute();
$rows = $stmt->fetchAll();
foreach ($rows as $row) {
$result .= $row['session_id'] . ", ";
}
}
catch(PDOException $e) {
die("Could not connect to the database\n");
}
return $result;
}
Then call it as:
echo get_db();
Another option would be for the function to return the session IDs as an array:
function get_db(){
$dsn = "mysql:host=".$GLOBALS["db_host"].";dbname=".$GLOBALS["db_name"];
$dsn = $GLOBALS["dsn"];
$result = array();
try {
$pdo = new PDO($dsn, $GLOBALS["db_user"], $GLOBALS["db_pasw"]);
$stmt = $pdo->prepare("SELECT * FROM lp_sessions");
$stmt->execute();
$rows = $stmt->fetchAll();
foreach ($rows as $row) {
$result[] = $row['session_id'];
}
}
catch(PDOException $e) {
die("Could not connect to the database\n");
}
return $result;
}
Then you would use it as:
$sessions = get_db(); // $sessions is an array
and the caller can then make use of the values in the array, perhaps using them as the key in some other calls instead of just printing them.
As antoox said, but a complete changeset; change row to rows in two places:
$rows = $stmt->fetchAll();
foreach ($rows as $row) {
echo $row['session_id'] . ", ";
}
Putting this at the start of the script after <?php line will output interesting warnings:
error_reporting(E_ALL|E_NOTICE);
To output only one row, suppose the database table has a field named id and you want to fetch row with id=1234:
$stmt = $pdo->prepare("SELECT * FROM lp_sessions WHERE id=?");
$stmt->bindValue(1, "1234", PDO::PARAM_STR);
I chose PDO::PARAM_STR because it will work with both strings and integers.