PHP extension CLI crashing - php

I have c++ class used for encrypting a file - works fine on it's own. I wrapped it using swig for 5.6.x-nts-Win32-x64 PHP. Usage:
<?php
require("crypt.php");
$e = new CCrypt();
//(plain, encrypted)
if ($e->EncryptFile("sample","enc/sample")) {
print "Encrypted file\n";
}
$e = NULL;
print "Goodbye\n"
?>
Problem is this seems to work sometimes, with no consistent line in the extension code as to where it crashes when debugging. Error is corrupted heap. I am new to developing PHP extensions, and I'm wondering if this has to do with unsupported 64-bit PHP version, or something unique to CLI. Swig does not (yet) support PHP 7 :/
UPDATE
Forgot to mention encryption works fine if run as an executable from PHP.

Turned out to be my lack of understanding SWIG's implementation of STL. When I removed STL from the wrapper source, the extension worked as expected. I later added STL back in, albeit in proper SWIG fashion!

Related

Using Cassandra PDO Driver on Windows

Is there any way to have Cassandra PDO at Windows with Wamp?
This is for development purposes I don't want to install Linux and change all the environment.
https://code.google.com/a/apache-extras.org/p/cassandra-pdo/
I'm using Windows 7 (64 Bit), Wamp 2.5, PHP 5.5.
OK, here's what I found out:
1) It's totally possible
2) The docs that appear in the first google search results are a bit obsolete
Start by downloading the latest Datastax Community Cassandra here:
http://planetcassandra.org/cassandra/
Install & setup properly. In fact, most of the configuration is done by the installer, you just have to edit the apache-cassandra/conf/cassandra.yaml file to find all paths to /var/lib... and change those into something like d:/cassandra/... That includes "commitlog", "data", "saved_caches". Restart the Cassandra service, examine the logs. Mine shown no problem. The OpsCenter at ...:8888/opscenter/index.html was working fine, showing one node online.
Now, the PHP part.
There's a sneaky thing called Thrift. From what I've learned today (I first heard about Cassandra and Thrift yesterday), it's a way describe a binary protocol of connecting to some online service, in this case, to Cassandra. It will basically generate PHP files that will provide all the connectivity you need from PHP itself (no extensions needed).
You will need:
1) The Thrift PHP libs
2) The .exe Thrift compiler
Both can be downloaded here:
https://thrift.apache.org/download
Then use the following command to compile PHP files that will act as a "driver" to connect your PHP applications to Cassandra:
thrift --gen php D:\DataStaxCommunity\apache-cassandra\interface\cassandra.thrift
Put the result in some PHP include_path folder.
Also, find the PHP Thrift libs (in the libs archive from the same download page) and put those in a folder accessible to your script (e.g. include_path or the project folder).
Refer this page:
thrift.apache.org/lib/php
I guess that should help!
I have same problem as you, but when i tried this method, it works correctly for me.
Reference link
Here is a code example, very easy to understand :
<?php
require_once 'Cassandra/Cassandra.php';
$o_cassandra = new Cassandra();
$s_server_host = '127.0.0.1'; // Localhost
$i_server_port = 9042;
$s_server_username = ''; // We don't use username
$s_server_password = ''; // We don't use password
$s_server_keyspace = 'cassandra_tests';
$o_cassandra->connect($s_server_host, $s_server_username, $s_server_password, $s_server_keyspace, $i_server_port);
$s_cql = "CREATE TABLE carles_test_table (s_thekey text, s_column1 text, s_column2 text,PRIMARY KEY (s_thekey));";
$st_results = $o_cassandra->query($s_cql);

How to get pthreads working in PHP?

I am using wampserver to test & run wordpress code in my local computer. In order to run pthread, I have followed the following steps:
1) I got the pthread zip file from http://windows.php.net/downloads/pecl/releases/pthreads/0.44/
(My machine has php 5.3.13 and downloaded the php_pthreads-0.44-5.3-ts-vc9-x86.zip file from the above link).
2) Extracted the zip file. Moved the php_pthreads.dll to the C:\wamp\bin\php\php5.3.13\ext directory.
3) Moved pthreadVC2.dll to the C:\wamp\bin\php\php5.3.13 directory.
4) Then Opened C:\wamp\bin\php\php5.3.13\php.ini and added the code extension=php_pthreads.dll at the begining of the file.
But when I try to run the following code:
<?php
class My extends Thread {
public function run() {
printf("%s is Thread #%lu\n", __CLASS__, $this->getThreadId());
}
}
$my = new My();
$my->start();
?>
It gives me the following error:
Fatal error: Class 'Thread' not found in C:\wamp\www\wp-admin\includes\post.php on line 2
Can you please tell me how to install pthreads in my computer to use with php? and do I have to install any other software?
I've noticed that wampserver has php.ini in two separate places. One place is in the /wamp/bin/php/php5... directory, and the other place is in the /wamp/bin/apache/apache.../bin directory (where "..." represents version numbers). The two files need to be identical, because apparently both are loaded at different times by the overall wampserver boot-up procedure.
(Note I only discovered this recently, and may be well "behind the curve" of doing fancy things with wampserver --maybe everyone else has been dealing with both files for a long time. So I don't know if this simple thing will fix your problem; I came here looking for info, myself, regarding doing some multi-threading stuff. :)
One other thing. According to this page: www.php.net/manual/en/pthreads.requirements.php
PHP has to be compiled with "--enable-zts" in order for pthreads stuff to work. I have not been able to find any evidence that the PHP part of wampserver was compiled that way.
(months later)
Having decided I didn't really immediately need to do any threading stuff, I went on to do other things, until the need actually arose. I now can say that the version of PHP compiled into WampServer does support the "pthread" extension, although some set-up work is needed, first. The instructions I saw mentioned putting a couple of .dll files (after a download and unZip) into certain places, but that didn't work for me. Copying them to the \Windows\System32 directory did work. (Putting them into the \apache...\bin directory also works; there are some other php .dll files in there.)
After that, much like what you did, it is necessary to define a "class" that extends the "Thread" class, in order to actually do something in another thread. The "run()" function in the Thread class is "abstract", and needs to be "realized" as an actual function in the extended class. Then the "new" operator can create an "instance", an object of that specified class, for actual use. Here's the class that I needed:
//Purpose: Use another thread to run the code in another php file, after a delay
class xT extends Thread
{ var $fil, $tim;
function savWhatWhen($f="", $t=0)
{ $this->fil = $f; //save What, file to process
$this->tim = $t; //save When, delay before processing file
return;
}
function run()
{ ini_set('max_execution_time', 600); //600 seconds = 10 minutes
sleep($this->tim); //do a delay; beware of max-exec-time!
include($this->fil); //load file-to-process, and process it
return;
} }
That "savWhatWhen()" function was created specifically for this extension of the basic Thread class. Here's some code for using that class:
$TH = new xT(); //prepare a separate Thread
$TH->savWhatWhen("d:/wamp/myscripts/test.php", 45);//file-name and delay time
$TH->start(); //after delay, process file
//the code that does this can terminate, while OTHER thread is doing a delay
Note for anyone copying this code, you might need to make sure your "open_basedir" setting in the php.ini allows access to the specified file.
More months later: With lots of things being worked on, I haven't put a lot of time into using my pthread object. I did encounter a peculiarity that makes me wonder about whether or not I can actually use pthreads the way I had hoped. Here is what I have observed:
1. An initial php file is called by AJAX, to do something.
2. The PHP processor on the Web Server does that thing.
3. Various data is supposed to be echoed to the browser.
4. The initial php file calls for the creation of another thread, and terminates.
5. The browser does not yet receive the echoed data!
6. The PHP processor on the Web Server does the work delegated to the second thread.
7. When the second thread terminates, NOW the browser receives the echoed data!
At this writing I'm thinking I missed something. Perhaps I need to do some forceful "flush" stuff when the first thread ends, so that the browser can receive the echoed data and the user can do things while the PHP processor on the server is also doing things.
Check for extension_dir = "ext" in you php.ini file. Make sure it points to the folder where your extensions reside and make sure it's not commented (it has a semicolon ; in front of it)
You have to add a require_once() with the path of the Thread class before extending it (if your framework don't use an autoload class system)
I've encountered the same problem, in my case placing the pthreadVC2.dll in
..wamp\bin\apache\Apache2.4.4\bin
(instead of ..\wamp\bin\php\php5.4.16 as the guide in php.net instructs) solved the problem
Wamp server has a separate php.ini config file for the browser and for the cli.
To use the pthreads module in the browser with WAMP Server you need to copy the "pthreadVC2.dll" into the apache "bin" directory also.
You should now have he "pthreadVC2.dll" in both of these folders (if installed in default location):
C:\wamp\bin\php\php[x.x.xx]\bin
C:\wamp\bin\apache\apache[x.x.x]\bin
You will also need to update the php.ini file within the php bin directory AND the apache bin directory to include:
extension=php_pthreads.dll
This now means you can use pthreads in the browser and in the cli with wamp server
After encountering the same problem, I noticed that I have installed the wrong Pthread version (3.1.6 : requires PHP7+) which wasn't compatible with my PHP version (5.5.12). Solved the problem with Pthread version 0.0.44. An earlier version should probably work well.
Here is the download page for Pthread and the installation page. Be careful about the both php.ini location as mentioned above (Apache folder=for Browser, PHP folder=CLI).

PHP Phar created with Phar::createDefaultStub running as CLI in browser

I have an application I want to package as a PHAR with both CLI and web interfaces (it acts as an API to wider system so I'd like to avoid reproducing the same libraries across two PHAR archives). The 'bug' im encountering is that the PHAR always acts like it's run from the command line when created with createDefaultStub.
<?php
try {
$phar = new Phar('myphar.phar');
$phar['cli.php'] = '<?php echo "CLI"; ?>';
$phar['web.php'] = '<?php echo "Web"; ?>';
$phar->setDefaultStub('cli.php', 'web.php');
// this is the same as:
// $phar->setStub($phar->createDefaultStub('cli.php', 'web/index.php'));
} catch (Exception $e) {
// handle errors
}
?>
If I run the phar created from the above code which was taken directly from (http://www.php.net/manual/en/phar.createdefaultstub.php from the command line with
php.exe myphar.phar
I see, "CLI" as expected, but I also see this from the web also.
There is a documented bug from 2010, but since it appears unsolved and not many cases available I'm wondering if its something I'm doing wrong at my end.
PHP Bug Report: https://bugs.php.net/bug.php?id=52322&edit=2
Things I've done to try and diagnose:
Tested on PHP 5.4.11, 5.3.21, 5.2.17
The phar was recreated under each version also.
Tried on a clean install of the latest XAMPP.
PHP.ini settings
detect_unicode = Off
phar.readonly = Off
phar.require_hash = Off
Debugged with echo from cli.php of:
$_SERVER['REQUEST_URI']
$_SERVER['REQUEST_METHOD']
Both return as expected, these are the values used in the default stub to check if it's running on the web.
I really am at a loss here and wondered if anybody had ideas about where to turn next?
Writing a custom stub is an option, but likely something is going wrong behind the scenes that will trip me up later on.
Any advice would be greatly appreciated :)

Temp-Files in Symfony-Cache folder

I'm using Windows on some production machines (IIS with FastCGI-PHP). Since the update of one SF-Project to 1.3.x I notice some strange problems. The Server is "collecting" Temp-Files in the config-cache folder of the applications. They are named like con1718.tmp and always containing the autoload-config-cache. The tmp-files are not generated for every request but I have 1 or 2 new files every half an hour or so. If the application is running some days/months there are a lot of these Temp-Files (Megabytes of them).
Machine-Details: - Windows Server 2008 - IIS 7 - ZendServer? with PHP 5.2.11
Project with SF 1.3.3
Any ideas what the problem can be?
I checked out symfony 1.4 and saw this in the code:
// Hack from Agavi (http://trac.agavi.org/changeset/3979)
// With php < 5.2.6 on win32, renaming to an already existing file doesn't work, but copy does,
// so we simply assume that when rename() fails that we are on win32 and try to use copy()
if (!#rename($tmpFile, $cache))
{
if (copy($tmpFile, $cache))
{
unlink($tmpFile);
}
}
This piece of code should be in sfConfigCache.php on line 354, could you check you have this lines? If not, consider updating, or patching, and if yes, you could log $tmpFile before unlinking it, just to see if there is an attempt to unlink these files or not.
To add more information log, you should try this code instead:
if (!#rename($tmpFile, $cache))
{
sfContext::getInstance()->getLogger()->info('attempt to renaming ' . $tmpFile . ' failed, trying copy');
if (copy($tmpFile, $cache))
{
sfContext::getInstance()->getLogger()->info('copy successful, now unlinking ' . $tmpFile);
unlink($tmpFile);
}
else
{
sfContext::getInstance()->getLogger()->err('probem with copy for file '.$tmpFile);
}
}
'con1718.tmp' looks like a temporary file name generated with tempnam PHP function:
tempnam('c:/tmp', 'con'); // produces something like c:\\tmp\con1234.tmp
I used grep on symfony sources to find such calls but didn't find any tempnam() usage with 'con'. Maybe it's one of the plugins you're using?
Any chance you're running the Windows Cache Extension for PHP (Windows Cache Extension 1.1 for PHP 5.2 in Web Platform Installer 2.0)? I've noticed that while this package tries to ape the behaviour of APC PHP Accelerator that is widely used, it does consume a lot of resources and do some odd things, especially file writes in odd places. I've yet to mash symfony and it together, but will be doing so in the next few weeks. Otherwise, my specs match yours quite closely.
Not a full answer maybe, but if it is installed, how about disabling it and retrying?

How do I call a function from a dll from php on windows?

I'm using xampp.
I search and it looks like for php 4.x, there was an extension called php_w32api.dll which seems to have vanished for php 5.x. Nevertheless, it's still in the documentation on php.net but marked as experimental.
Some suggested to use win32std in pecl instead, but that just wraps some function of the win32 api, but doesn't allow me do call my own dll functions. :/
There is ffi, but the link on the pecl site is dead and it seems like development has stopped in 2004.
Any idea how to do this without writing my own php extension?
Best regards
Marc
COM functions are only available for the Windows version of PHP.
.Net support requires PHP 5 and the .Net runtime.
No installation needed to use these functions; they are part of the PHP core.
First create your ActiveX dll (Visual Basic):
Name your project as "foo" and class as "bar".
'---start VB code---
Public Function hello() As String
hello = "Hello World!"
End Function
'---end VB code---
Then make the dll and register it with regsvr32.exe
Now create your PHP script:
<?php
$obj = new COM("foo.bar");
$output=$obj->hello(); // Call the "hello()" method
// once we created the COM object this can be used like any other php classes.
echo $output; // Displays Hello World! (so this comes from the dll!)
?>

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