I'm running the following very basic PDO:MySql connection:
<?php
$host = '127.0.0.1:8888';
$db = 'communities';
$user = 'root';
$pass = 'yY5MF)q/DCzc';
// Create connection
try {
$conn = new PDO('mysqli:host=$host;dbname=$db', $user, $pass);
foreach($conn->query('SELECT * from city_detail') as $row) {
print_r($row);
}
$conn = null;
// Check connection
} catch (PDOException $e) {
print "Error!: " . $e->getMessage() . "<br/>";
die();
}
echo "Connected successfully";
?>
I've modified php.ini to allow for extension=php_pdo_mysql.dll with no effect. Is there something else that I'm missing. I am using PHP7.0.3. The error message output is Error!: could not find driver Kudos!
You need to use double quotes to get variable data inside string:
$conn = new PDO("mysqli:host=$host;dbname=$db", $user, $pass);
The problem was using msqli instead of mysql.
Related
Forgive me, as I've not worked in php for years. I'm picking up some old code to get working again and I'm having a strange issue.
I'm writing in php with wordpress. As I am editing the code, I've noticed the php tag is closing after the following:
<?php
$databaseHost = "Localhost";
$databaseName = "testDB";
$databaseUser = "TESTUSER";
$databasePassword = "TESTPASS";
$coin_id = (isset($_POST['coin_id'])) ? $_POST['coin_id'] : '';
try {
$db = new PDO('mysql:host=' . $databaseHost . ';dbname=' . $databaseName . ';charset=utf8', $databaseUser, $databasePassword);
$db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$db->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
$request = "SELECT
_7UR_participants_database.city,
_7UR_participants_database.state,
_7UR_participants_database.country,
_7UR_participants_database.zip,
_7UR_participants_database.coin_id,
FROM _7UR_participants_database GROUP BY _7UR_participants_database.coin_id ASC";
$stmt = $db->query($request);
$item_info = $stmt->fetchAll();
} catch (PDOException $e) {
echo "Exception: " . $e->getMessage();
exit;
} // Try / catch end
?>
Everything after that > following $db- is not included in the php. The php tag is closing with that last >. Do I need to escape the character or something of that nature?
since your formatting is hard to undertand i rewrite it on my liking that it "migth" actually works
$dsn = "mysql:host=localhost;dbname=testDB;charset=utf8mb4"; // most cool kids use charset=utf8mb4
$options = [
PDO::ATTR_EMULATE_PREPARES => false, // turn off emulation mode for "real" prepared statements
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION, //turn on errors in the form of exceptions
PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC, //make the default fetch be an associative array
];
try {
$dbh = new PDO($dsn, "TESTUSER", "TESTPASS", $options);
} catch (Exception $e) {
error_log($e->getMessage());
echo ("Error Code: " . $e->getCode() . "<br>"); // never use echo on public release build it would leak your database credential this is optional great for troubleshooting
echo ("Error Message: " . $e->getMessage() . "<br>");
exit('Something weird happened');//
}
$request = $dbh->prepare("SELECT
_7UR_participants_database.city,
_7UR_participants_database.state,
_7UR_participants_database.country,
_7UR_participants_database.zip,
_7UR_participants_database.coin_id,
FROM _7UR_participants_database GROUP BY _7UR_participants_database.coin_id ASC";
$request->execute([]); // you do not have something like this also i never put value since i don't know what your doing
$item_info = $request->fetchAll(); // store the fetched on $item_info also you need to indicate what data type you fetching by default it always PDO::FETCH_ASSOC
This script
<?php
/* Connect to a MySQL database using driver invocation */
$dsn = 'mysqldg';
$user = 'odbc_dg';
$password = '999999999';
try {
$dbh = new PDO($dsn, $user, $password);
} catch (PDOException $e) {
echo 'Connection failed: ' . $e->getMessage();
}
?>
gives the error *Connection failed: invalid data source name*
I have created an entry in /etc/odbc.ini as follows:
[mysqldg]
Description = DGDB
Driver = mysql537
Database = dg1
Servername = 99.99.99.99
UID = odbc_dg
PWD = 999999
SSLKeyFile = /etc/mysql/ssl/ck.pem
SSLCertFile = /etc/mysql/ssl/cc.pem
SSLCAFile = /etc/mysql/ssl/c1.pem
/etc/odbcinst.ini has the following entry:
[mysql537]
Description = MySQL driver for Plesk
Driver = /usr/lib/odbc2/lib/libmyodcb5w.so
Setup = /usr/lib/odbc2/lib/libmyodbc5w.so
The entry in odbcinst.ini works with a non-DSN connection.
I'm obviously missing something, can anyone help? Thanks.
UPDATED....
I have tried Your Common Sense's code as follows:
<?php
$host = '46.99.199.199';
$db = 'dg';
$user = 'odbc_dg';
$pass = '999999';
$charset = 'utf8mb4';
$options = array(
PDO::MYSQL_ATTR_SSL_KEY => '/etc/mysql/ssl/ck.pem',
PDO::MYSQL_ATTR_SSL_CERT => '/etc/mysql/ssl/cc.pem',
PDO::MYSQL_ATTR_SSL_CA => '/etc/mysql/ssl/c1.pem'
);
$dsn = "mysql:host=$host;dbname=$db;charset=$charset";
try {
$pdo = new PDO($dsn, $user, $pass, $options);
} catch (PDOException $e) {
echo 'Connection failed: ' . $e->getMessage();
}
?>
... but I get a connection fail message - Connection failed: SQLSTATE[HY000] [2002]
I think the problem is that the keys I have supplied only work with ODBC
For example this code, which uses odbc_connect works....
<?php
ini_set ('error_reporting', E_ALL);
ini_set ('display_errors', '1');
error_reporting (E_ALL|E_STRICT);
$user = "odbc_dg";
$pass = "99999";
$connection = "Driver= {mysql537};Server=46.99.199.199;Database=dgdb;UID=dgdb;PWD=999999;sslca=/etc/mysql/ssl/c1.pem;sslkey=/etc/mysql/ssl/ck.pem;sslcert=/etc/mysql/ssl/cc.pem";
$con = odbc_connect($connection, $user, $pass);
$sql="SELECT Id from stk_item";
$rs=odbc_exec($con,$sql);
if (!$rs) {
exit("Error in SQL");
}
echo "<table><tr>";
echo "<th>Companyname</th>";
echo "<th>Contactname</th></tr>";
while (odbc_fetch_row($rs)) {
echo odbc_result($rs, "Id"), "\n";
}
odbc_close($con);
echo "</table>";
?>
My problem is that I want to connect to the remote database via pdo because that's the only type of connection allowed in the Drupal synchronising code.
I just tried to connect a secondary database like this example bellow but i don't know why refuse to work. Any idea?
I mention that each database connection works properly individualy.
$db_HOST = "localhost";
$db_USER = "db_user";
$db_PASS = "db_pass";
$db_NAME1 = "db_test1";
$db_NAME2= "db_test2";
$db_LINK1 = mysql_connect($db_HOST, $db_USER, $db_PASS) or die("Technical revision. Please try again later!");
mysql_select_db($db_NAME1, $db_LINK1) or die("Couldn't select database");
$db_LINK2 = mysql_connect($db_HOST, $db_USER, $db_PASS, true) or die("Technical revision. Please try again later!");
mysql_select_db($db_NAME2, $db_LINK2) or die("Couldn't select database");
Errors i get in the log file:
PHP Warning: mysql_fetch_array() expects parameter 1 to be resource, boolean given in /config/global/variables.php on line 27
PHP Warning: mysql_fetch_array() expects parameter 1 to be resource, boolean given in config/global/hello.php on line 3
Thank you!
Do the following (with PDO instead of mysql_connect as the latter is deprecated):
$db_HOST = "localhost";
$db_USER = "db_user";
$db_PASS = "db_pass";
$db_NAME1 = "db_test1";
$db_NAME2= "db_test2";
try {
$db_LINK1 = new PDO('mysql:host='.$db_HOST.';dbname='.$db_NAME1, $db_USER, $db_PASS);
foreach($db_LINK1->query('SELECT * from FOO') as $row) {
print_r($row);
}
$dbh = null;
} catch (PDOException $e) {
print "Error!: " . $e->getMessage() . "<br/>";
die();
}
try {
$db_LINK2 = new PDO('mysql:host='.$db_HOST.';dbname='.$db_NAME2, $db_USER, $db_PASS);
foreach($db_LINK2->query('SELECT * from FOO') as $row) {
print_r($row);
}
$dbh = null;
} catch (PDOException $e) {
print "Error!: " . $e->getMessage() . "<br/>";
die();
}
More info here: php.net/manual/en/pdo.connections.php
If the second connection fails check the exact error message.
You should really use PDO but your code works if you use your link in your db select. For example:
$db1 = mysql_connect($hostname, $username, $password);
$db2 = mysql_connect($hostname, $username, $password, true);
mysql_select_db('database1', $db1);
mysql_select_db('database2', $db2);
that should work. You forgot to select which database should be used on every link.
I thnk I found the problem.
I forgot to change all queries accordind to the new multiple connection.
LE: Solve confirmed! Thank you all!
I have newly purchased server, on that server database connections are not working.
<?php
error_reporting(E_ALL);
$server = "server name";
$user = "username";
$password = "password";
$db = "test";
echo "Before";
$con = mysql_connect($server, $user, $password);
echo "After";
if (!$con){
die('Could not connect:' . mysql_error());
}
mysql_select_db($db, $con);
?>
When run this file its print Before text but not print After text.
Currently you can use the following code:
ini_set("error_reporting", E_ALL & ~E_DEPRECATED);
Using this you can get either deprecated or not.
FYI: The mysql_* functions have been removed in PHP7.x. There are two modules you can use.
The first is MySQLi, just use the code as follows:
<?php
$con = mysqli_connect("localhost","my_user","my_password","my_db");
// Check connection
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
?>
You can also use PDO using code :
<?php
$servername = "localhost";
$username = "username";
$password = "password";
try {
$conn = new PDO("mysql:host=$servername;dbname=myDB", $username, $password);
// set the PDO error mode to exception
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
echo "Connected successfully";
}
catch(PDOException $e)
{
echo "Connection failed: " . $e->getMessage();
}
?>
what is the best way for create a connection between PHP and SQL server that are seperate?(two server: server a SQL and server b PHP)
notice that I use wamp.
I read some articles like below but I want to know is there any new idea?
I test this code that works perfectly:
try{
$user = 'user';
$password = 'pass';
$server="localhost";//or server IP
$database="database";
$conn = odbc_connect("Driver={SQL Server};Server=$server;Database=$database;", $user, $password);
} catch (PDOException $e) {
echo "Failed : " . $e->getMessage() . "\n";
exit;
}
I use PDO_ODBC Method:
1- Install ODBC on server that has wamp and enable PHP_PDO_ODBC extension on your wamp
2- Use this code that supports UTF-8:
try{
$hostname = "IP";
$dbname = "database";
$username = "username";
$pw = "password";
$pdo = new PDO ("odbc:Driver={SQL Server Native Client 10.0};Server=$hostname;Database=$dbname; Uid=$username;Pwd=$pw;");
} catch (PDOException $e) {
echo "Failed : " . $e->getMessage() . "\n";
exit;
}
$query = $pdo->prepare("select field_name from table");
$query->execute();
for($i=0; $row = $query->fetch(); $i++){
echo iconv("CP1256","UTF-8", $row['field_name'])."<br>";
}
3- replace these Items with yours:
IP-database-username-password-field_name-table
4- sometimes you need use "SQL SERVER" instead of "SQL Server Native Client 10.0" and sometimes you need use "IP,port" instead of "IP" and sometimes you need use "ISO-8859-6" instead of "CP1256".
From the PHP manual: http://php.net/manual/en/pdo.construct.php
Example #1 Create a PDO instance via driver invocation
<?php
/* Connect to a SQL Server database using driver invocation */
$dsn = "sqlsrv:Server=12345abcde.database.windows.net;Database=testdb", "UserName#12345abcde", "Password";
try {
$dbh = new PDO($dsn);
} catch (PDOException $e) {
echo 'Connection failed: ' . $e->getMessage();
}
?>
Just change the HOST ip to the IP and port of your mysql server.