PHP-OCI连接

I am new to PHP and am trying to connect to a oracle database on some server.

However the php script is not executing properly.

 <?php
 echo "started 
";
 // Create connection to Oracle
 $conn = oci_connect("username", "password", "abc.def.ghi.com");
 if (!$conn) {
    $m = oci_error();
    echo $m['message'], "
";
    exit;
 }
 else {
    print "Connected to Oracle!";
 }
 // Close the Oracle connection
 oci_close($conn);
 ?>

It prints started, but after that it does not print any error or "Connected to Oracle".

php -l filename.php gives "no syntax errors".

Was PHP compiled with oracle support? Check your error log, if not you'll error out on oci_connect() and not reach anything else.

(display errors would also be of help)