How to make Pervasive PDO PHP connection - php

Question

I am trying to establish a connection to my works Pervasive SQL database. I've tried using odbc_connect (didn't work) but I was told that PDO is easier and better (HA, also didn't work). This is my connection string
$dbh = new PDO("odbc:Driver={Pervasive ODBC Client Interface};ServerName=192.168.43.19;dbq=GLOBALTST");
I've tried odbc:DSNname (https://www.php.net/manual/en/ref.pdo-odbc.connection.php), ODBC:servername (ip and hostname), and odbc:databasename. Nothing has worked. This is the error I am getting:
Fatal error: Uncaught PDOException: SQLSTATE[IM003] SQLDriverConnect: 160 Specified driver could not be loaded due to system error 1114: A dynamic link library (DLL) initialization routine failed. (Pervasive ODBC Client Interface, C:\PSQL\bin\w3odbcci.dll). in C:\inetpub\wwwroot\default.php:4 Stack trace: #0 C:\inetpub\wwwroot\default.php(4): PDO->__construct() #1 {main} thrown in C:\inetpub\wwwroot\default.php on line 4
The DLL it is looking for is actually located in the spot it's referencing. as far as I can tell there are no issues with it. THe ODBC is configured correctly on the server and I can connect to the DB in the PSQL control center. can anyone help in identifying my issue or pointing to a connection string that works either odbc_connect or PDO?

Answer 1

This code worked for me using PSQL v11 64 bit ODBC, PHP 7.2 64 bit on a Windows machine.
<?php
try {
// Connect to the data source
//$dbh = new PDO($dsn);
$dbh = new PDO("odbc:Driver={Pervasive ODBC Interface};ServerName=192.168.43.19;dbq=demodata");
$stmt = $dbh->prepare('SELECT * FROM class');
// Execute the prepared statement for each name in the array
$stmt->execute();
$result = $stmt->fetchAll(PDO::FETCH_ASSOC);
$numResults = count($result);
echo ('<b>Total Results: </b> ' . $numResults . '<br>');
if ($numResults > 0) {
// Output the table header
echo '<table><tr>';
foreach ($result[0] as $fieldName=>$value) {
echo '<th>' . htmlspecialchars($fieldName) . '</th>';
}
echo '</tr>';
// Now output all the results
foreach($result as $row) {
echo '<tr>';
foreach ($row as $fieldName=>$value) {
echo '<td>' . htmlspecialchars($value) . '</td>';
}
echo '</tr>';
}
// Close the table
echo '</table>';
} else {
echo 'No results';
}
// Close statement and data base connection
$stmt = NULL;
$dbh = NULL;
}
catch(PDOException $e) {
echo $e->getMessage();
}
?>