common_functions.php

这是一个可以显示localhost 的系统信息的php 生成网页

<?php 
/***************************************************************************
 *   Copyright (C) 2006 by phpSysInfo - A PHP System Information Script    *
 *   http://phpsysinfo.sourceforge.net/                                    *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/

// $Id: common_functions.php,v 1.55 2007/02/20 19:20:20 bigmichi1 Exp $

// usefull during development
if( isset($showerrors) && $showerrors ) {
	error_reporting( E_ALL | E_NOTICE );
} else {
	error_reporting( E_ERROR | E_WARNING | E_PARSE );
}

// HTML/XML Comment
function created_by () {
	global $VERSION;
	
	return "<!--\n\tCreated By: phpSysInfo - " . $VERSION . "\n\thttp://phpsysinfo.sourceforge.net/\n-->\n";
} 

// print out the bar graph
// $value as full percentages
// $maximim as current maximum 
// $b as scale factor
// $type as filesystem type
function create_bargraph ($value, $maximum, $b, $type = "") {
	global $webpath;
	
	$textdir = direction();
	$imgpath = $webpath . 'templates/' . TEMPLATE_SET . '/images/';
	$maximum == 0 ? $barwidth = 0 : $barwidth = round((100  / $maximum) * $value) * $b;
	$red = 90 * $b;
	$yellow = 75 * $b;
	if (!file_exists(APP_ROOT . "/templates/" . TEMPLATE_SET . "/images/nobar_left.gif")) {
		if ($barwidth == 0) {
			return '<img height="' . BAR_HEIGHT . '" alt="" src="' . $imgpath . 'bar_' . $textdir['left'] . '.gif">'
				  .'<img height="' . BAR_HEIGHT . '" alt="" src="' . $imgpath . 'bar_middle.gif" width="1">'
				  .'<img height="' . BAR_HEIGHT . '" alt="" src="' . $imgpath . 'bar_' . $textdir['right'] . '.gif">';
		} elseif ( file_exists( APP_ROOT . "/templates/" . TEMPLATE_SET . "/images/yellowbar_left.gif") && ( $barwidth > $yellow ) && ( $barwidth < $red ) ) {
			return '<img height="' . BAR_HEIGHT . '" alt="" src="' . $imgpath . 'yellowbar_' . $textdir['left'] . '.gif">'
				  .'<img height="' . BAR_HEIGHT . '" alt="" src="' . $imgpath . 'yellowbar_middle.gif" width="' . $barwidth . '">'
				  .'<img height="' . BAR_HEIGHT . '" alt="" src="' . $imgpath . 'yellowbar_' . $textdir['right'] . '.gif">';
		} elseif ( ( $barwidth < $red ) || ( $type == "iso9660" ) || ( $type == "CDFS" ) ) {
			return '<img height="' . BAR_HEIGHT . '" alt="" src="' . $imgpath . 'bar_' . $textdir['left'] . '.gif">'
				  .'<img height="' . BAR_HEIGHT . '" alt="" src="' . $imgpath . 'bar_middle.gif" width="' . $barwidth . '">'
				  .'<img height="' . BAR_HEIGHT . '" alt="" src="' . $imgpath . 'bar_' . $textdir['right'] . '.gif">';
		} else {
			return '<img height="' . BAR_HEIGHT . '" alt="" src="' . $imgpath . 'redbar_' . $textdir['left'] . '.gif">'
				  .'<img height="' . BAR_HEIGHT . '" alt="" src="' . $imgpath . 'redbar_middle.gif" width="' . $barwidth . '">'
				  .'<img height="' . BAR_HEIGHT . '" alt="" src="' . $imgpath . 'redbar_' . $textdir['right'] . '.gif">';
		}
	} else {
		if ($barwidth == 0) {
			return '<img height="' . BAR_HEIGHT . '" alt="" src="' . $imgpath . 'nobar_' . $textdir['left'] . '.gif">'
				  .'<img height="' . BAR_HEIGHT . '" alt="" src="' . $imgpath . 'nobar_middle.gif" width="' . ( 100 * $b ) . '">'
				  .'<img height="' . BAR_HEIGHT . '" alt="" src="' . $imgpath . 'nobar_' . $textdir['right'] . '.gif">';
		} elseif ( file_exists( APP_ROOT . "/templates/" . TEMPLATE_SET . "/images/yellowbar_left.gif" ) && ( $barwidth > $yellow ) && ( $barwidth < $red ) ) {
			return '<img height="' . BAR_HEIGHT . '" alt="" src="' . $imgpath . 'yellowbar_' . $textdir['left'] . '.gif">'
				  .'<img height="' . BAR_HEIGHT . '" alt="" src="' . $imgpath . 'yellowbar_middle.gif" width="' . $barwidth . '">'
				  .'<img height="' . BAR_HEIGHT . '" alt="" src="' . $imgpath . 'nobar_middle.gif" width="' . ( ( 100 * $b ) - $barwidth ) . '">'
				  .'<img height="' . BAR_HEIGHT . '" alt="" src="' . $imgpath . 'nobar_' . $textdir['right'] . '.gif">';
		} elseif ( ( $barwidth < $red ) || ( $type == "iso9660" ) || ( $type == "CDFS" ) ) {
			return '<img height="' . BAR_HEIGHT . '" alt="" src="' . $imgpath . 'bar_' . $textdir['left'] . '.gif">'
				  .'<img height="' . BAR_HEIGHT . '" alt="" src="' . $imgpath . 'bar_middle.gif" width="' . $barwidth . '">'
				  .'<img height="' . BAR_HEIGHT . '" alt="" src="' . $imgpath . 'nobar_middle.gif" width="' . ( ( 100 * $b ) - $barwidth ) . '">'
				  .'<img height="' . BAR_HEIGHT . '" alt="" src="' . $imgpath . 'nobar_' . $textdir['right'] . '.gif">';
		} elseif ( $barwidth == ( 100 * $b ) ) {
			return '<img height="' . BAR_HEIGHT . '" alt="" src="' . $imgpath . 'redbar_' . $textdir['left'] . '.gif">'
				  .'<img height="' . BAR_HEIGHT . '" alt="" src="' . $imgpath . 'redbar_middle.gif" width="' . ( 100 * $b ) . '">'
				  .'<img height="' . BAR_HEIGHT . '" alt="" src="' . $imgpath . 'redbar_' . $textdir['right'] . '.gif">';
		} else {
			return '<img height="' . BAR_HEIGHT . '" alt="" src="' . $imgpath . 'redbar_' . $textdir['left'] . '.gif">'
				  .'<img height="' . BAR_HEIGHT . '" alt="" src="' . $imgpath . 'redbar_middle.gif" width="' . $barwidth . '">'
				  .'<img height="' . BAR_HEIGHT . '" alt="" src="' . $imgpath . 'nobar_middle.gif" width="' . ( ( 100 * $b ) - $barwidth ) . '">'
				  .'<img height="' . BAR_HEIGHT . '" alt="" src="' . $imgpath . 'nobar_' . $textdir['right'] . '.gif">';
		}
	}
}

function create_bargraph_grad( $value, $maximum, $b, $type = "" ) {
	global $webpath;
	
	$maximum == 0 ? $barwidth = 0 : $barwidth = round( ( 100  / $maximum ) * $value );
	$startColor = '0ef424'; // green
	$endColor = 'ee200a'; // red
	if ( $barwidth > 100 ) {
		$barwidth = 0;
	}
	
	return '<img height="' . BAR_HEIGHT . '" width="300" src="' . $webpath . 'includes/indicator.php?height=' . BAR_HEIGHT . '&amp;percent=' . $barwidth . '&amp;color1=' . $startColor . '&amp;color2=' . $endColor . '" alt="">';
}

function direction() {
	global $text_dir;
	
	if( ! isset( $text_dir ) || ( $text_dir == "ltr" ) ) {
		$arrResult['direction'] = "ltr";
		$arrResult['left'] = "left";
		$arrResult['right'] = "right";
	} else {
		$arrResult['direction'] = "rtl";
		$arrResult['left'] = "right";
		$arrResult['right'] = "left";
	}
	
	return $arrResult;
}

// Find a system program.  Do path checking
function find_program ($strProgram) {
	global $addpaths;
	
	$arrPath = array( '/bin', '/sbin', '/usr/bin', '/usr/sbin', '/usr/local/bin', '/usr/local/sbin' );
	if( isset( $addpaths ) && is_array( $addpaths ) ) {
		$arrPath = array_merge( $arrPath, $addpaths );
	}
	if ( function_exists( "is_executable" ) ) {
		foreach ( $arrPath as $strPath ) {
			$strProgrammpath = $strPath . "/" . $strProgram;
			if( is_executable( $strProgrammpath ) ) {
				return $strProgrammpath;
			}
		}
	} else {
		return strpos( $strProgram, '.exe' );
	}
}

// Execute a system program. return a trim()'d result.
// does very crude pipe checking.  you need ' | ' for it to work
// ie $program = execute_program('netstat', '-anp | grep LIST');
// NOT $program = execute_program('netstat', '-anp|grep LIST');
function execute_program ($strProgramname, $strArgs = '', $booErrorRep = true ) {
	global $error;
	$strBuffer = '';
	$strError = '';
	
	$strProgram = find_program($strProgramname);
	if ( ! $strProgram ) {
		if( $booErrorRep ) {
			$error->addError( 'find_program(' . $strProgramname . ')', 'program not found on the machine', __LINE__, __FILE__);
		}
		return "ERROR";
	}
	// see if we've gotten a |, if we have we need to do patch checking on the cmd
	if( $strArgs ) {
		$arrArgs = split( ' ', $strArgs );
		for( $i = 0; $i < count( $arrArgs ); $i++ ) {
			if ( $arrArgs[$i] == '|' ) {
				$strCmd = $arrArgs[$i + 1];
				$strNewcmd = find_program( $strCmd );
				$strArgs = ereg_replace( "\| " . $strCmd, "| " . $strNewcmd, $strArgs );
			}
		}
	}
	// no proc_open() below php 4.3
	if( function_exists( 'proc_open' ) ) {
		$descriptorspec = array(
			0 => array("pipe", "r"),  // stdin is a pipe that the child will read from
			1 => array("pipe", "w"),  // stdout is a pipe that the child will write to
			2 => array("pipe", "w")   // stderr is a pipe that the child will write to
		);
		$process = proc_open( $strProgram . " " . $strArgs, $descriptorspec, $pipes );
		if( is_resource( $process ) ) {
			while( !feof( $pipes[1] ) ) {
				$strBuffer .= fgets( $pipes[1], 1024 );
			}
			fclose( $pipes[1] );
			while( !feof( $pipes[2] ) ) {
				$strError .= fgets( $pipes[2], 1024 );
			}
			fclose( $pipes[2] );
		}
		$return_value = proc_close( $process );
	} else {
		if( $fp = popen( "(" . $strProgram . " " . $strArgs . " > /dev/null) 3>&1 1>&2 2>&3", 'r' ) ) {
			while( ! feof( $fp ) ) {
				$strError .= fgets( $fp, 4096 );
			}
			pclose( $fp );
		}
		$strError = trim( $strError );
		if( $fp = popen( $strProgram . " " . $strArgs, 'r' ) ) {
			while( ! feof( $fp ) ) {
				$strBuffer .= fgets( $fp, 4096 );
			}
			$return_value = pclose( $fp );
		}
	}

	$strError = trim( $strError );
	$strBuffer = trim( $strBuffer );
	
	if( ! empty( $strError ) || $return_value <> 0 ) {
		if( $booErrorRep ) {
			$error->addError( $strProgram, $strError . "\nReturn value: " . $return_value, __LINE__, __FILE__);
		}
	}
	return $strBuffer;
}

// A helper function, when passed a number representing KB,
// and optionally the number of decimal places required,