2013年10月27日 星期日

php based CPU&RAM檢視

一個以php + GD為基礎的CPU&RAM使用量檢視
只支援Linux作業系統(因為是用"/proc/stat"跟"/proc/meminfo"來算的)



程式碼:
<?php
//CPU使用率觀察器
//版本: 1.2
//作者: cs8425
//e-mail: cs8425@gamil.com
//授權: 創用 CC 姓名標示-相同方式分享 3.0 台灣 授權條款
//
//注意: 為了安全起見，最好對來源IP進行限制!!

//error_reporting(E_ALL);
//ini_set("display_errors", 1); //for Debug
$refresh = 800;    //更新時間(ms)
session_start();

if(isset($_GET['mode'])){
switch ($_GET['mode']) {
    case 1:
        //$cpu_count = exec('cat /proc/cpuinfo |grep "processor"|wc -l');
        $im = @imagecreate(650, 300)

            or die("Cannot Initialize new GD image stream");

        $background_color = imagecolorallocate($im, 0xFF, 0xFF, 0xFF);    //背景色
        $text_color = imagecolorallocate($im, 0x00, 0xF5, 0x3D);
        for($i=0;$i<10;$i++){
            for($j=0;$j<500;$j+=10){
                //imagedashedline($im, $j, $i*30, $j+5, $i*30, $text_color);
                imageline($im, $j, $i*30, $j+5, $i*30, $text_color);
            }
        }
        imageline($im, 0, 299, 500, 299, $text_color);
        imagealphablending($im, true);
        imagesavealpha($im, true);

        //exec('cat /proc/stat | grep "cpu"', $CPULOG);
        if($fh = fopen("/proc/stat","r")){
            while(!feof($fh)){
                $LOG=stream_get_line($fh,65535,"\n");
                if(stristr($LOG,"cpu")){
                    $CPULOG[] = $LOG;
                }
            }
            fclose($fh);
        }
        $cpu_count = count($CPULOG);
        $_SESSION['i'] = $_SESSION['i'] + 1;
        if($_SESSION['i'] < 100){
            $k=$_SESSION['i'];
        }else{
            $k=100;
        }
        for($i=$k;$i>0;$i--){
            for($j=0;$j<$cpu_count;$j++){
                $_SESSION['cpu'][$i][$j] = $_SESSION['cpu'][$i-1][$j];
            };
        }
        for($i=0;$i<$cpu_count;$i++){
            sscanf($CPULOG[$i], "%s %f %f %f %f %f %f %f", $u, $a, $b, $c, $d, $e, $f, $g);
            $SYS_IDLE_2[$i]=$d;
            $Total_2[$i]=($a + $b + $c + $d + $e + $f + $g);
            $time=time();
            if(($time-$_SESSION['time'][$i]) > 20){
                $_SESSION['cpu'] = null;
                $_SESSION['i'] = 0;
                $_SESSION['SYS_IDLE'][$i] = $SYS_IDLE_2[$i];
                $_SESSION['Total'][$i] = $Total_2[$i];
                $_SESSION['time'][$i] = $time;
            };
            $SYS_IDLE[$i]=$SYS_IDLE_2[$i] - $_SESSION['SYS_IDLE'][$i];
            $Total[$i]=$Total_2[$i] - $_SESSION['Total'][$i];
            if($Total[$i] == 0){
                if($SYS_IDLE[$i] == 0){
                    $SYS_USAGE[$i] = 100;
                }else{
                    $SYS_USAGE[$i] = 0;
                }
            }else{
                $SYS_USAGE[$i] = $SYS_IDLE[$i] / $Total[$i] * 100;
            };
            $_SESSION['cpu'][0][$i] = 100 - $SYS_USAGE[$i];
            $_SESSION['SYS_IDLE'][$i] = $SYS_IDLE_2[$i];
            $_SESSION['Total'][$i] = $Total_2[$i];
            $_SESSION['time'][$i] = $time;
        };

        $F = 0xFF;
        $E = 0x00;
        $K = 0x600/$cpu_count;
        for($i=0;$i<$cpu_count;$i++){
            $T = ($i*$K)%0x600;
            $u = $T%0x100;
            $d = $F-$u;
            if($T<0x100){$A=$F; $B=$u; $C=$E;}else{
            if($T<0x200){$A=$d; $B=$F; $C=$E;}else{
            if($T<0x300){$A=$E; $B=$F; $C=$u;}else{
            if($T<0x400){$A=$E; $B=$d; $C=$F;}else{
            if($T<0x500){$A=$u; $B=$E; $C=$F;}else{
            if($T<0x600){$A=$F; $B=$E; $C=$d;}}}}}}
            $cpu_color[$i] = imagecolorallocate($im, $A, $B, $C);
            //echo $A.", ".$B.", ".$C."<br>\n";
        }

        for($i=0;$i<$k;$i++){
            for($j=0;$j<$cpu_count;$j++){
                imageline($im, (99-$i)*5, (100-$_SESSION['cpu'][$i+1][$j])*3, (100-$i)*5, (100-$_SESSION['cpu'][$i][$j])*3,$cpu_color[$j]);
            };

        }
        imagestring($im, 2, 510, 0, sprintf("-cpu: %0.3f", $_SESSION['cpu'][0][0]), $cpu_color[0]);
        for($i=1;$i<$cpu_count;$i++){
            imagestring($im, 2, 510, $i*20,  sprintf("-cpu%d: %0.3f", $i, $_SESSION['cpu'][0][$i]), $cpu_color[$i]);
        }

        header("Content-type: image/png");
        imagepng($im);
        //var_dump($_SESSION['cpu'][0]);
        imagedestroy($im);
        break;

    case 2:
        $data = str_replace(":","",file_get_contents("/proc/meminfo"));
        $convert = explode("\n", $data);
        $convert = preg_replace("~([a-zA-Z0-9_\(\)]*)[ ]*([0-9a-zA-Z]*)~i", "$1 $2", $convert);
        for ($i=0;$i<count($convert);$i++){
            sscanf($convert[$i], "%s %f %s\n", $n, $a, $b);
            $OK[$i] = $a;
        }

        $im = imagecreate(650, 300);
        $background_color = imagecolorallocate($im, 0xFF, 0xFF, 0xFF);    //背景色
        $text_color = imagecolorallocate($im, 0x00, 0xF5, 0x3D);
        for($i=0;$i<10;$i++){
            for($j=0;$j<500;$j+=10){
                //imagedashedline($im, $j, $i*30, $j+5, $i*30, $text_color);
                imageline($im, $j, $i*30, $j+5, $i*30, $text_color);
            }
        }
        imageline($im, 0, 299, 500, 299, $text_color);
        imagealphablending($im, true);
        imagesavealpha($im, true);
        $color[0] = imagecolorallocate($im, 0x14, 0xBE, 0xE3);
        $color[1] = imagecolorallocate($im, 0x00, 0x00, 0x00);
        $color[2] = imagecolorallocate($im, 0xEE, 0xFE, 0x00);
        $color[3] = imagecolorallocate($im, 0xFE, 0x25, 0x1A);

        $time=time();
        if(($time-$_SESSION['ram']['time']) > 200){
            //session_destroy();
            $_SESSION['j'] = 0;
            $_SESSION['ram'] = null;
        };
        $_SESSION['ram']['time'] = $time;
        $_SESSION['j'] = $_SESSION['j'] + 1;
        if($_SESSION['j'] < 100){
            $k = $_SESSION['j'];
        }else{
            $k = 100;
        }
        if($k > 1){
            for($i=$k-1;$i>0;$i--){
                for($j=0;$j<5;$j++){
                    $_SESSION['ram'][$i][$j] = $_SESSION['ram'][$i-1][$j];
                };
            };
        }
        $_SESSION['ram'][0] = array(($OK[0] - $OK[1] - $OK[2] - $OK[3]), $OK[1], $OK[2], $OK[3], $OK[0]);
        for($i=0;$i<$k;$i++){
            $cache = $_SESSION['ram'][$i][3]/$_SESSION['ram'][$i][4]*100;
            $buffer = $_SESSION['ram'][$i][2]/$_SESSION['ram'][$i][4]*100;
            $used = $_SESSION['ram'][$i][0]/$_SESSION['ram'][$i][4]*100;
            //Free
            //$free = $_SESSION['ram'][$i][$j]/$_SESSION['ram'][$i][4]*100;
            //Cached
            imagefilledrectangle($im, (99-$i)*5, (100-$cache-$buffer-$used)*3, (100-$i)*5, 300,$color[3]);
            //Buffers
            imagefilledrectangle($im, (99-$i)*5, (100-$buffer-$used)*3, (100-$i)*5, 300,$color[2]);
            //Uesd
            imagefilledrectangle($im, (99-$i)*5, (100-$used)*3, (100-$i)*5, 300,$color[0]);
        }
        for($j=0;$j<4;$j++){
            $A = $_SESSION['ram'][0][$j]/1024;
            if($A>=0.7){
                $list[$j][0] = $A;
                $list[$j][1] = "MB";
            }
            $A = $_SESSION['ram'][0][$j]/1048576;
            if($A>=0.7){
                $list[$j][0] = $A;
                $list[$j][1] = "GB";
            }
            if($list[$j][1] == ""){
                $list[$j][0] = $_SESSION['ram'][0][$j];
                $list[$j][1] = "KB";
            }
            $list[$j][2] = $_SESSION['ram'][0][$j]/$_SESSION['ram'][0][4]*100;
        };
        imagestring($im, 2, 510, 20,  sprintf("Used: %0.2f%s(%0.1f%%)", $list[0][0], $list[0][1], $list[0][2]), $color[0]);
        imagestring($im, 2, 510, 40,  sprintf("Free: %0.2f%s(%0.1f%%)", $list[1][0], $list[1][1], $list[1][2]), $color[1]);
        imagestring($im, 2, 510, 60,  sprintf("Buffer: %0.2f%s(%0.1f%%)", $list[2][0], $list[2][1], $list[2][2]), imagecolorallocate($im, 0xF0, 0xA6, 0x19));
        imagestring($im, 2, 510, 80,  sprintf("Cache: %0.2f%s(%0.1f%%)", $list[3][0], $list[3][1], $list[3][2]), $color[3]);
        /*var_dump($k);
        var_dump($_SESSION['ram']);*/
        header("Content-type: image/png");
        imagepng($im);
        imagedestroy($im);
        break;

    default:
        header("Location: ".$_SERVER["SCRIPT_NAME"]);
        break;
}
}else{ ?><html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf8">
<meta http-equiv="Pragma" content="no-cache">
<meta name="KEYWords" content="CPU使用率,CPU,cs8425,php">
<meta name="Author" content="cs8425">
<meta name="Robots" content="all">
<script type="text/javascript">
function refreshImage(){
    img = document.getElementById("i");
    img.src = '<?=$_SERVER["SCRIPT_NAME"]?>?mode=1&'+new Date().getTime();
    img2 = document.getElementById("i2");
    img2.src = '<?=$_SERVER["SCRIPT_NAME"]?>?mode=2&'+new Date().getTime();
}
</script>
</head>
<body onload="refreshImage();">
<center><img id="i" width="650" height="300" src='<?=$_SERVER["SCRIPT_NAME"]?>?mode=1' action="graph"/><br>
<img id="i2" width="650" height="300" src='<?=$_SERVER["SCRIPT_NAME"]?>?mode=2' action="graph"/><br><br>
<a rel="license" href="http://creativecommons.org/licenses/by-sa/3.0/tw/"><img alt="Creative Commons License" style="border-width:0" src="http://i.creativecommons.org/l/by-sa/3.0/tw/88x31.png" /></a><br>
<DIV STYLE="font-size : 7pt; font-family : Arial">';
&#26412;&#33879;&#20316;&#30001;<span xmlns:cc="http://creativecommons.org/ns#" property="cc:attributionName">cs8425</span>&#35069;&#20316;&#65292;&#20197;<a rel="license" href="http://creativecommons.org/licenses/by-sa/3.0/tw/">&#21109;&#29992;CC &#22995;&#21517;&#27161;&#31034;-&#30456;&#21516;&#26041;&#24335;&#20998;&#20139; 3.0 &#21488;&#28771; &#25480;&#27402;&#26781;&#27454;</a>&#37323;&#20986;&#12290;<DIV></center>
<script type="text/javascript">
    setInterval(refreshImage,<?=$refresh ?>);
</script>
</body>
</html>
<?php
}
===============end==============
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