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git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@61346 c90b9560-bf6c-de11-be94-00142212c4b1
242 lines
7.3 KiB
XML
242 lines
7.3 KiB
XML
<?xml encoding="iso-8859-1"?>
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<!-- $Revision: 1.2 $ -->
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<chapter id="faq.com">
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<title>PHP and COM</title>
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<titleabbrev>PHP and COM</titleabbrev>
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<para>
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PHP can be used to access COM and DCOM objects on Win32 platforms.
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</para>
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<qandaset>
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<qandaentry id="faq.com.q1">
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<question>
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<para>I have built a DLL to calculate something. Is there any way to run this DLL under PHP ?</para>
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</question>
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<answer>
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<para>
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If this is a simple DLL there is no way yet to run it from PHP. If the DLL contains a COM
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server you may be able to access it if it implements the IDispatch interface.
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</para>
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</answer>
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</qandaentry>
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<qandaentry id="faq.com.q2">
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<question>
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<para>What does 'Unsupported variant type: xxxx (0xxxxx)' mean ?</para>
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</question>
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<answer>
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<para>
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There are dozens of VARIANT types and combinations of them. Most of them are already supported but
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a few still have to be implemented.
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Arrays are not completely supported. Only single dimensional indexed
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only arrays can be passed between PHP and COM.
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If you find other types that aren't supported, please report them as a bug (if not already reported)
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and provide as much information as available.
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</para>
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</answer>
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</qandaentry>
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<qandaentry id="faq.com.q3">
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<question>
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<para>Is it possible manipulate visual objects in PHP ?</para>
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</question>
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<answer>
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<para>
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Generally it is, but as PHP is mostly used as a web scripting language it runs in the web servers context, thus
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visual objects will never appear on the servers desktop.
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If you use PHP for application scripting e.g. in conjunction with PHP-GTK there is no limitation in accessing and
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manipulating visual objects through COM.
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</para>
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</answer>
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</qandaentry>
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<qandaentry id="faq.com.q4">
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<question>
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<para>Can I store a COM object in a session ?</para>
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</question>
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<answer>
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<para>
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No, you can't. COM instances are treated as resources and therefore they are only available in a single script's context.
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</para>
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</answer>
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</qandaentry>
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<qandaentry id="faq.com.q5">
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<question>
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<para>How can I trap COM errors ?</para>
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</question>
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<answer>
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<para>
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Currently it's not possible to trap COM errors beside the ways provided by PHP itself (@, track_errors, ..), but we are
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thinking of a way to implement this.
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</para>
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</answer>
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</qandaentry>
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<qandaentry id="faq.com.q6">
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<question>
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<para>Can I generate DLL files from PHP scripts like i can in Perl ?</para>
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</question>
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<answer>
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<para>
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No, unfortunatelly there is no such tool available for PHP.
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</para>
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</answer>
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</qandaentry>
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<qandaentry id="faq.com.q7">
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<question>
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<para>What does 'Unable to obtain IDispatch interface for CLSID {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}' mean ?</para>
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</question>
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<answer>
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<para>
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This error can have multiple reasons:
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<itemizedlist>
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<listitem>
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<simpara>
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the CLSID is wrong
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</simpara>
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</listitem>
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<listitem>
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<simpara>
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the requested DLL is missing
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</simpara>
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</listitem>
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<listitem>
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<simpara>
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the requested component doesn't implement the IDispatch interface
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</simpara>
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</listitem>
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</itemizedlist>
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</para>
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</answer>
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</qandaentry>
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<qandaentry id="faq.com.q8">
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<question>
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<para>How can I run COM object from remote server ?</para>
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</question>
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<answer>
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<para>
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Exactly like you run local objects. You only have to pass the ip of the remote machine as second parameter to
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the COM constructor.
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</para>
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<para>
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Make sure that you have set <literal>com.allow_dcom=true</literal> in your <literal>php.ini</literal>.
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</para>
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</answer>
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</qandaentry>
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<qandaentry id="faq.com.q9">
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<question>
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<para>I get 'DCOM is disabled in C:\path...\scriptname.php on line 6', what can I do ?</para>
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</question>
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<answer>
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<para>
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Edit your <literal>php.ini</literal> and set <literal>com.allow_dcom=true</literal>.
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</para>
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</answer>
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</qandaentry>
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<qandaentry id="faq.com.q10">
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<question>
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<para>Is it possible to load/manipulate an ActiveX object in a page with PHP ?</para>
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</question>
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<answer>
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<para>
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This has nothing to do with PHP. ActiveX objects are loaded on client side if they are requested
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by the HTML document. There is no relation to the PHP script and therefore there is no direct
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server side interaction possible.
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</para>
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</answer>
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</qandaentry>
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<qandaentry id="faq.com.q11">
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<question>
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<para>Is it possible to get a running instance of a component ?</para>
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</question>
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<answer>
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<para>
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This is possible with the help of monikers. If you want to get multiple references to the same word instance
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you can create that instance like shown:
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</para>
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<programlisting>
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$word = new COM("C:\docs\word.doc");
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</programlisting>
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<para>
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This will create a new instance if there is no running instance available or it will return a handle to the
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running instance, if available.
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</para>
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</answer>
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</qandaentry>
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<qandaentry id="faq.com.q12">
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<question>
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<para>Is there a way to handle an event sent from COM object ?</para>
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</question>
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<answer>
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<para>
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Not yet.
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</para>
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</answer>
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</qandaentry>
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<qandaentry id="faq.com.q13">
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<question>
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<para>I'm having problems when trying to invoke a method of a COM object wich exposes more than one interface. What can I do ?</para>
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</question>
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<answer>
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<para>
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The answer is as simple as unsatisfying. I don't know exactly but i think you can do nothing.
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If someone has specific information about this, please let <ulink url="mailto:harald.radi@nme.at">me</ulink> know :)
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</para>
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</answer>
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</qandaentry>
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<qandaentry id="faq.com.q14">
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<question>
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<para>So PHP works with COM, how about COM+ ?</para>
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</question>
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<answer>
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<para>
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COM+ extends COM by a framework for managing components through MTS and MSMQ but there is nothing special that
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PHP has to support to use such components.
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</para>
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</answer>
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</qandaentry>
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<qandaentry id="faq.com.q15">
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<question>
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<para>If PHP can manipulate COM objects, can we imagine to use MTS to manage components resources, in conjunction with PHP ?</para>
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</question>
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<answer>
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<para>
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PHP itself doesn't handle transactions yet. Thus if an error occours no rollback is initiated. If you use components that
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support transactions you will have to implement the transaction management yourself.
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</para>
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</answer>
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</qandaentry>
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</qandaset>
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</chapter>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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sgml-parent-document:nil
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sgml-default-dtd-file:"../../manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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