File Source for function.memusage.php

<?php
/**
* Smarty plugin
* @package Smarty
* @subpackage plugins
*/
/**
* smarty_function_memusage
*/
function smarty_function_memusage($params, &$gBitSmarty) {
if( function_exists( 'memory_get_usage' ) ) {
$memusage = memory_get_usage();
} else {
// If its Windows
// Tested on Win XP Pro SP2. Should work on Win 2003 Server too
// Doesn't work for 2000
// If you need it to work for 2000 look at http://us2.php.net/manual/en/function.memory-get-usage.php#54642
if( substr( PHP_OS, 0, 3 ) == 'WIN' ) {
if( substr( PHP_OS, 0, 3 ) == 'WIN' ) {
$output = array();
}
exec( 'tasklist /FI "PID eq ' . getmypid() . '" /FO LIST', $output );
$memusage = preg_replace( '/[\D]/', '', $output[5] ) * 1024;
} else {
// We now assume the OS is UNIX
// Tested on Mac OS X 10.4.6 and Linux Red Hat Enterprise 4
// This should work on most UNIX systems
$pid = getmypid();
exec( "ps -eo%mem,rss,pid | grep $pid", $output );
$output = explode( " ", trim( $output[0] ) );
// rss is given in 1024 byte units
$memusage = $output[1] * 1024;
}
}
if( $memusage > 0 ) {
$memunit="B";
if( $memusage > 1024 ) {
$memusage = $memusage/1024;
$memunit = "kB";
}
if( $memusage>1024 ) {
$memusage=$memusage/1024;
$memunit="MB";
}
if( $memusage>1024 ) {
$memusage=$memusage/1024;
$memunit="GB";
}
print( number_format( $memusage, 2 ).$memunit );
}
}
?>

Source for file function.memusage.php