php-doc-en/reference/w32api/reference.xml

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 <reference id="ref.w32api">
  <title>W32api functions</title>
  <titleabbrev>W32api</titleabbrev>

  <partintro>
   <section id="w32api.intro">
    &reftitle.intro;
    <para>
     This extension is a generic extension api to DLLs. This was originally
     written to allow access to the Win32 API from PHP. Although you can also
     access other functions exported via other DLLs.
    </para>
    <para>
     Currently supported types are generic PHP types (strings, bools, doubles,
     longs and null's) others will be added in the future.
    </para>
    &warn.experimental;
   </section>
   
   &reference.w32api.constants;
   
   <section id="w32api.examples">
    &reftitle.examples;
    <para>
     This example gets the amount of time the system has been running and
     displays it in a message box.
    </para>
    <example>
     <title>Get the uptime and display in a message box</title>
     <programlisting role="php">
<![CDATA[
<?php
// Define constants needed, taken from
// Visual Studio/Tools/Winapi/WIN32API.txt
define("MB_OK", 0);

dl("php_w32api.dll");

w32api_register_function("kernel32.dll", 
                         "GetTickCount",
                         "long");
                         
w32api_register_function("User32.dll",
                         "MessageBoxA",
                         "long");

$ticks = GetTickCount();

$secs = floor($ticks / 1000);
$mins = floor($secs / 60);
$hours = floor($mins / 60);

$str = sprintf("You have been using your computer for:".
                "\r\n %d Milliseconds, or \r\n %d Seconds".
                "or \r\n %d mins or\r\n %d hours %d mins.",
                $ticks,
                $secs,
                $mins,
                $hours,
                $mins - ($hours*60));

MessageBoxA(NULL, 
            $str, 
            "Uptime Information", 
            MB_OK);
?>
]]>
     </programlisting>
    </example>
   </section>
  </partintro>

&reference.w32api.functions;

 </reference>
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