PHP SDK

2019-04-13T23:09:37Z

Chaos: Added community python SDK

__NOTOC__
You can access the MTA Web Interface from almost any programming language that can request web pages using HTTP POST and encode and decode [[JSON]]. PHP can do this very easily.

This SDK provides one function ''call'' that will allow you to call any exported script functions on any server that you have access to.

The download below includes two example pages - one that shows a simple scoreboard, the other that shows the automatic handling of element and resource objects.

If you use this and make any improvements, feel free to send us a copy and we can host it for others to benefit from.

==Functions==
===call===
This function calls an exported function in a specific resource.

'''Syntax:'''
<syntaxhighlight lang="php">
$mtaServer = new mta( $hostname, $port, $username, $password );
$resource = $mtaServer->getResource ( $resourceName );
$returns[] = $resource->call ( "functionName" [,args...] );
</syntaxhighlight>

===getInput===
This function is for use with web pages that are called by [[callRemote]].

'''Syntax:'''
<syntaxhighlight lang="php">
$inputData = mta::getInput();
</syntaxhighlight>

===doReturn===
Use this function when you want to return data when a page is called with [[callRemote]]. You should '''NOT''' output any other data to the page, e.g. using ''echo'' as this will cause the return to fail.

'''Syntax:'''
<syntaxhighlight lang="php">
mta::doReturn( argument1, argument2 ... argumentN );
</syntaxhighlight>

==Examples==
<syntaxhighlight lang="php">
include( "mta_sdk.php" );
$mtaServer = new mta("bastage.net", 33004);
$resource = $mtaServer->getResource ( "echobot" );
$retn = $resource->call ( "getThisResource" ); // $retn is an array containing the values the function returned
$resourceElement = $retn[0]; // the first returned value is the resource
$retn = $resource->call ( "getResourceName", $resourceElement );
$resourceName = $retn[0]; // contains the name of the resource 'echobot'
</syntaxhighlight>

==Authentication==
If the server you are accessing requires authentication, you must pass the ''http_username'' and ''http_password'' variables to your instantiated instance of the mta() class.

'''Example:'''
<syntaxhighlight lang="php">
include( "mta_sdk.php" );
$mtaServer = new mta("example.com", 33004, "myUsername", "myPassword" );
$mtaServer->getResource("someResource")->call("someFunction");
</syntaxhighlight>

==A page that can be called by [[callRemote]]==
This example just adds two numbers passed to it by a lua script.

'''PHP:''' (for the page that LUA expects to be at ''<nowiki>http://www.example.com/page.php</nowiki>'')
<syntaxhighlight lang="php">
include( "mta_sdk.php" );
$input = mta::getInput();
mta::doReturn($input[0] + $input[1]);
</syntaxhighlight>
'''LUA:'''
<syntaxhighlight lang="lua">
-- result is called when the function returns
function result(sum)
outputChatBox(sum)
end
function addNumbers(number1, number2)
callRemote ( "http://www.example.com/page.php", result, number1, number2 )
end
addNumbers ( 123, 456 ) -- call the function
</syntaxhighlight>

==Caveats==
* This only works with PHP 5.0 and above.
* You cannot currently compare two Element instances that you expect to be identical - you need to do a "deep compare", comparing the "id" fields.

==Download==
=== Note for version 0.4 ===
On line 80 in mta_sdk.php you will find the string:
<syntaxhighlight lang="php">
echo $json_output;
</syntaxhighlight>

Replace that one with:
<syntaxhighlight lang="php">
//echo $json_output;
</syntaxhighlight>

Or remove it completly!

=== Note for PHP 7.2.10 (and upwards) ===

Methods with the same name as their class will not be constructors in a future version of PHP (7.0.x)+

Using PHP 7.2.10 this seems to break completely

On line 211 and 227 in mta_sdk.php find the following:

<syntaxhighlight lang="php">
line 211: class Element
line 227: class Resource
</syntaxhighlight>

Change these to:

<syntaxhighlight lang="php">
line 211: class ElementClass
line 227: class ResourceClass
</syntaxhighlight>

Now on line 42 and 99 find the following:

<syntaxhighlight lang="php">
line 42: $res = new Resource ( $resourceName, $this );
line 99: $item = new Element( substr( $item, 3 ) );
</syntaxhighlight>

Change these to:

<syntaxhighlight lang="php">
line 42: $res = new ResourceClass ( $resourceName, $this );
line 99: $item = new ElementClass( substr( $item, 3 ) );
</syntaxhighlight>

Now finally, on line 121, change this:

<syntaxhighlight lang="php">
if ( get_class($item) == "Element" || get_class($item) == "Resource" )
</syntaxhighlight>

To this:

<syntaxhighlight lang="php">
if ( get_class($item) == "ElementClass" || get_class($item) == "ResourceClass" )
</syntaxhighlight>

All fixed!

Visit [https://github.com/multitheftauto/mtasa-php-sdk/releases the releases page on GitHub] to download the SDK.

=== Note for Python ===

There is a community made Python SDK with the same semantics on [https://gitlab.com/OwlGamingCommunity/mta-python-sdk the OwlGaming Gitlab] for use on Python projects.

== Version History ==

* Version 0.4 - Renamed ''public function mta(..)'' to ''public function __construct(..)''.
* Version 0.3-fix - make call work with args
* Version 0.3 - Neater syntax, support functions for [[callRemote]] (this version is lost)
* Version 0.2 - ''Deprecated - Syntax differs from examples shown above.'' - Adds authentication support.
* Version 0.1 - ''Deprecated - Syntax differs from examples shown above.''

[[Category:Tutorials]]

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PHP SDK