I'm trying to get a list from my MySQL database, which normally works fine. But today I'm getting this error Fatal error: Call to a member function setFetchMode() on a non-object in "Way too long path to file here".
This is my PHP code:
$conn = new PDO('mysql:host=localhost;port=3306;name=erty', 'erty', 'Ops, that my password ...');
$result = $conn->query("SELECT name FROM mod_devs");
$result->setFetchMode();
foreach ($result as $row) {
echo '<tr><td>'.$row['name'].'</td></tr>';
}
Now, you probably understand my goal :)
Generally Call to a member function setFetchMode() on a non-object means that $result is not available. Probably because of MySQL error - either in connection or query. Check if($conn) or if($result).
You still need to fetch the result...
So instead of foreach....do while...
while ($row = $result->fetch()) {
//your code here
}
you maybe need prepare not query
$result = $conn->prepare("SELECT name FROM mod_devs");
or this
$result->setFetchMode(PDO::FETCH_OBJ);
I just found the error. In the connection I wrote name=erty not dbname=erty!
Sorry for taking up your time :(
Related
below is my code
$result = Mage::getSingleton('core/resource')
->getConnection('core_read')
->fetchOne("SHOW TABLES LIKE 'dog_config'"); // error comes in this function
Can anyone help in resolving this.
Thanks in advance
Write your query as below:-
$connection = Mage::getSingleton('core/resource')->getConnection('core_read');
$sql = "Your_SQL_Query"; // write your sql query here
$result = $connection->fetchOne($sql); // You can use fetchRow($sql), fetchAll($sql) as per your need.
Note:- If still getting error then print $connection before $rows.
Check this link also.
I am trying to execute a MySQL Stored Procedure using PDO connection, i tried almost everything but not able to execute it.
The SP will only insert and update. Following is the codes I tried till now.
$config = require('protected/config/main.php');
try
{
$db_adat = new PDO($config['components']['db']['connectionString'], $config['components'] ['db']['username'], $config['components']['db']['password']);
$result= $db_adat->prepare('CALL pdv()');
$a = $result->execute();
$a->fetchAll(PDO::FETCH_ASSOC);
I tried with only fetch(), with only fetchAll(), fetchObject(), with fetch(PDO::FETCH_ASSOC), with fetchAll(\PDO::FETCH_ASSOC), but I always get following error
Fatal error: Call to a member function fetchAll() on a non-object in D:\ADAT_System\www\test\protected\controllers\ExportPDVController.php on line 35
I also tried using query() instead of execute(), but that doesn't work either.
I also tried adding a (select * ) statement in SP and tried with all above "fetch" options, but got same error.
The SP takes 7 minutes to complete, but all gave error immediately, so I am guessing it never ran the SP.
I tried as following too
$result= $this->$db_adat->prepare("CALL pdv()");
$result->execute();
but the I got following error:
Object of class PDO could not be converted to string
I am not passing any parameters in SP, just a simple call. Please let me know if any more information is required.
This part of your code is wrong
$result= $db_adat->prepare('CALL pdv()');
$a = $result->execute();
$a->fetchAll(PDO::FETCH_ASSOC);
Because execute() returns a boolean upon success or failure.
You cannot use that to fetch.here is the proper way with appropriate variable names:
$stmt= $db_adat->prepare('CALL pdv()');
$success = $stmt->execute();
if($success){
$result = $stmt->fetchAll(PDO::FETCH_ASSOC);
}else{
echo 'failed to run sp';
}
<?php
if(isset($_POST) && !empty($_POST)){
$SearchPO = (($_POST)['SearchPO']);
}
$stmt = $pdo->prepare("CALL spPO(?)");
$stmt->bindParam(1, $SearchPO, PDO::PARAM_STR|PDO::PARAM_INPUT_OUTPUT|PDO::ATTR_EMULATE_PREPARES, 4000);
$stmt->execute();
do {
$result = $stmt->fetchAll();
} while ($stmt->nextRowset() && $stmt->columnCount());
?>
You must use the nextRowset() function because the next record is 'empty' without it. Source
Going through a PHP MySQL tutorial and switching the PHP out for PDO; at any rate, my query is coming up blank.
$get_cat = $that->dbh->query("SELECT `cat_name`, `cat_desc` FROM `categories`");
if(isset($get_cat))
{
while($row = $get_cat->fetch(PDO::FETCH_ASSOC))
{
printf("
<tr>
<td>".$row['cat_name']." : ".$row['cat_desc']."</td>
</tr>
");
}
}
else
{
echo '<tr><td>return is false</td></tr>';
}
$That refers to:
include('db.php');
$that = new lib();
OLD:
So, why is my query blank? Before putting the die in it would return Boolean and give in an error in the loop with the die in it just comes up blank. The categories table has data in it and the page is refreshed on submission for new entries.
NEW:
Fatal error: Call to a member function fetch() on a non-object in C:\wamp\www\forum\create_category.php on line 36
Line 36 is the while loop line.
mysql_fetch_array is not PDO. You would need something like:
while($row = $get_cat->fetch(PDO::FETCH_ASSOC))
To get your rows.
Nor can you use mysql_error() to get the error. You could use for example $that->dbh->errorInfo() but you should look into exceptions for a more robust way to catch all errors.
Edit: You should check what the error is. Using isset is pointless as you have just assigned a value to it, so it will always be set.
You need to tell PDO to throw errors.
$dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$res = $that->dbh->query("SELECT cat_name, cat_desc FROM categories");
while($row = $res->fetch())
{
echo "<tr><td>$row[cat_name] : $row[cat_desc]</td></tr>\n";
}
run your code, read the error message and take appropriate action
Don't forget to add the first line into your db.php file, to make the setting permanent
Your query is incorrect -- is this what you're trying to do?
SELECT `categories`.`cat_name`, `categories`.`cat_desc` FROM `categories`
Hard to know without seeing you table structure.
I'm trying my hand at custom functions in PHP in order to streamline a lot of stuff I'm otherwise doing manually. I'm damn new to custom functions so I'm not sure the limitations. Right now I'm trying to get data with MySQLi using custom functions Here's the code, and then I'll explain the issue:
function connect_db($db = 'db_username') {
iconv_set_encoding("internal_encoding", "UTF-8");
mb_language('uni');
mb_internal_encoding('UTF-8');
# $mysqli = new mysqli('host',$db,'password',$db);
if(mysqli_connect_errno())
{
die('connection error');
}
}
This one seems to be working fine. It's the next function I'm having more trouble with.
edit: Updated thanks to Jeremy1026's response
function do_query($db = 'default_db', $query) {
connect_db();
$result = $mysqli->query($query);
if(!$result){
trigger_error("data selection error");
}
while($row = $result->fetch_assoc()){
$result_array[] = $row;
}
return $result_array;
}
My host forces database names and usernames as the same, so if the db name is 'bob' the username to access it will be 'bob' as well, so that's why $db shows up twice in the connection.
The problem I'm having is that these two functions are in functions.php and being called from another page. I want to be able to pull the results from the query in that other page based on the column name. But I also need to be able to do this with formatting, so then maybe the while() loop has to happen on that page and not in a function? I want this to be as universal as possible, regardless of the page or the data, so that I can use these two functions for all connections and all queries of the three databases I'm running for the site.
God I hope I'm being clear.
Big thanks in advance for any suggestions. I've googled this a bit but it's tough to find anything that's not using obsolescent mysql_ prefixes or anything that's actually returning the data in a way that I can use.
Update: I'm now getting the following error when accessing the page in question:
Fatal error: Call to a member function query() on a non-object in /functions.php`
with the line in question being $result = $mysqli->query($query);. I assume that's because it thinks $query is undefined, but shouldn't it be getting the definition from being called in the page? This is that page's code:
$query = "SELECT * FROM `table`";
$myArray = do_query($db, $query);
echo $myArray['column_name'];
In your 2nd function you aren't returning any data, so it is getting lost. You need to tell it what to return, see below:
function do_query($db = 'default_db', $query) {
connect_db();
$result = $mysqli->query($query);
if(!$result){
trigger_error("data selection error");
}
while($row = $result->fetch_assoc()){
$result_array[] = $row;
}
return $result_array;
}
Then, when using the function you'll do something like:
$myArray = do_query($db, 'select column from table');
$myArray would then be populated with the results of your query.
This is a half-answer. The following single function works in place of the two.
function query_db($database, $new_query) {
$sqli = new mysqli('host', $database, 'password', $database);
$sqli->set_charset("utf8");
global $result;
if($result = $sqli->query($new_query)){
return $result;
}
}
By adding global $result I was able to access the results from the query, run from another page as
query_db("username","SELECT * FROM `column`");
while($row = $result->fetch_assoc()){
print_r($row);
}
It's more streamlined than I have without functions, but it's still not idea. If I have the connection to the database in another function, it doesn't work. If I try to put the while loop in the combined function, it doesn't work. Better than nothing, I guess.
I am using the mysqli functions (mysqli_connect, mysqli_select_db, mysqli_query) to call 1 select query and 2 stored procedures.
It seems that when I am using the same $connection (returned by mysqli_connect) multiple times, I am getting the following error message: "Warning: mysqli_fetch_array() expects parameter 1 to be mysqli_result, boolean given in..."
Below is my code:
<?php
$server="localhost";
$user="user";
$pass="pass";
$db="db";
$connection=mysqli_connect("$server","$user","$pass");
mysqli_select_db($connection, "$db") or die('Unable to select database.');
//First SELECT using $connection
$query=mysqli_query($connection, "SELECT item_name FROM items ORDER BY item_name DESC");
While ($result=mysqli_fetch_array($query,MYSQL_NUM))
{
$complete_result[] = $result[0];
$total_rows = $total_rows + 1;
}
//CALL to first sp using $connection
$query2 = mysqli_query($connection, "CALL sp_check_edits_remaining()");
while ($row2 = mysqli_fetch_array($query2, MYSQL_ASSOC)) {
$edits_remaining = $row2['edits_remaining'];
} // End while
//CALL to second sp using $connection
$query3 = mysqli_query($connection, "CALL sp_edit_data");
while ($row3 = mysqli_fetch_array($query3, MYSQL_ASSOC)) {);
$edits_id = $row3['id'];
} // End while
?>
Like I described, when I call the second sp, the above code gives me the error message mentioned above. (Please note that the connection is never closed.)
However, when I create another connection and provide it to the second sp call, this error disappears. This is shown in the code below
$connection2=mysqli_connect("$server","$user","$pass");
mysqli_select_db($connection2, "$db") or die('Unable to select database.');
//CALL to second sp using $connection
$query3 = mysqli_query($connection2, "CALL sp_edit_data");
while ($row3 = mysqli_fetch_array($query3, MYSQL_ASSOC)) {
$edits_id = $row3['id'];
} // End while
Can anyone please help me why this unexpected behavior?
Thanks and in advance!
It seems I have found a solution, which might be specific to my scenario.
My stored procs return only one row in the resultset.
So, after the CALL to the first sp and the corresponding while loop, I have simply added:
mysqli_next_result($connection);
This has removed the error message/warning I was receiving.
Anyone wants to comment whether this is the 'professional' approach?
You have an error somewhere, causing one of the mysql functions (probably the query call(s)) to return a boolean false, which you then blindly use in a fetch call. You need to add extra error handling, e.g.
$query = mysqli_query($connection, "...") or die(mysqli_error($connection));
never assume a query has succeeded.
enter code hereafter the query is finished, you must close the $connection then for another query, connect and assign the $connection again.
mysqli_close($connection);
$connection=mysqli_connect(bla,bla,bla,bla).