[ms4w-users] php file error

Tue Mar 10 10:32:52 EST 2009

Hello everyone! In ms4w  5.2.1, I created & saved the following file as phpms_hello.php
<?php
   // Create a unique image name every time through
   $image_name = sprintf("phpms_hello%0.6d",rand(0,999999)).".jpg";
   // Create a new instance of a map object
   $map = ms_newMapObj("/ms4w/Apache/htdocs/hello.map");
   // Create an image of the map and save it to disk
   $image=$map->draw();
   $image->saveImage("/ms4w/tmp/ms_tmp/".$image_name);
?>
<html>
<head><title>PHP Mapscript Hello World</title></head>
<body>
     <form action="phpms_hello.php"  method="POST">
         <input  type="image" name="img"
                   src="/ms_tmp/<?php echo $image_name; ?>">
     </form>
</body>
</html>
When I run this file in the browser,  I get the following error message, 
Fatal error: Call to undefined function ms_newMapObj() in C:\ms4w\Apache\htdocs\phpms_hello.php on line 5
 
N.B: The hello.map file works through an html file. Can anyone help?
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