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    <h2>You can use Windows Management Instrumentation:</h2> <p>If you have not used <code>wmic</code> before you should install it by running <code>wmic</code> from <code>cmd.exe</code>. It should then say something like:</p> <pre><code>WMIC Installing... please wait. </code></pre> <p>After that <code>wmic</code> is ready for use: </p> <pre><code>function getProcessId( $imagename ) { ob_start(); passthru('wmic process where (name="'.$imagename.'") get ProcessId'); $wmic_output = ob_get_contents(); ob_end_clean(); // Remove everything but numbers and commas between numbers from output: $wmic_output = preg_replace( array('/[^0-9\n]*/','/[^0-9]+\n|\n$/','/\n/'), array('','',','), $wmic_output ); if ($wmic_output != '') { // WMIC returned valid PId, should be safe to convert to int: $wmic_output = explode(',', $pids); foreach ($wmic_output as $k =&gt; $v) { $wmic_output[$k] = (int)$v; } return $wmic_output; } else { // WMIC did not return valid PId return false; } } // Find out process id's: if ($pids = getProcessId( "chrome.exe" )) { foreach ($pids as $pid) { echo "Chrome.exe is running with pid $pid"; } } else { echo "Chrone.exe is not running"; } </code></pre> <p>I have not tested this and just wrote it out of my head so there might be some fixing and you should check wmic's output by running it from commandline with same args to see if <code>preg_replace()</code> is doing it right (get pid from wmic's output).</p> <h3>UPDATE:</h3> <p>Tested and it seems that <code>wmic</code> does not return any status codes so updated my php function to reflect this bahavior.</p> <h3>UPDATE:</h3> <p>Now it handles multiple processes too and returns all pids as indexed array or false when no process running.</p> <h3>About WMI:</h3> <p>Windows Management Instrumentation is very powerful interface and so is <code>wmic</code> commandline tool. <a href="http://en.wikipedia.org/wiki/Windows_Management_Instrumentation#Features" rel="nofollow">Here is listed some of WMI features</a></p>
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    1. COThank you. I am admittedly a novice. I didn't know 'wmic' existed. and this answer is concise, complete and informative.
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    2. COI forgot to remove unneccesary `$result` variable, it can be removed from `passthru(...)` as `wmic` does not return any real status code so there is no use for `%errorlevel%` with `wmic`.
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    3. COThank you, unnecessary variable removed.
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