<script type="text/javascript">
    function zmienn(com1, nr) {
    el = document.forms["form1"];
    el.elements["com1"].value = com1;
    el.submit();}
</script>

    <div class="niceButton">
        <form id="form1" action="<?php echo $PHP_SELF ?>" method="post" class="niceButton">
            <input type="hidden" name="com1" value=""/>
            <button class="medium green niceButton" onclick="zmienn('on', 0)">ON</button>
            <button class="medium red niceButton" onclick="zmienn('off',0)">OFF</button>
        </form>
            <?php
                if(`head /sys/class/leds/tp-link:green:wlan/brightness` <= "1") {$result0 = '<br><div class="medium red niceButton">Solar Wyłączony</div>';} else {$result0 = '<br><div class="medium green niceButton">Solar Włączony</div>';} 
                $com = stripslashes($_POST["com1"]);
                if ($com == "on") {exec("echo 255 > /sys/class/leds/tp-link:green:wlan/brightness"); $result0 = '<br><div class="medium green niceButton">Solar Włączony</div>';}
                if ($com == "off") {exec("echo 0 > /sys/class/leds/tp-link:green:wlan/brightness"); $result0 = '<br><div class="medium red niceButton">Solar Wyłączony</div>';}
                echo  $result0;
            ?>
    </div>

    <div class="niceButton">    
        <?php
        $status = `head /sys/class/leds/tp-link:green:usb/brightness`; //pobierasz aktualny status
        $status = trim($status); //wyrzucenie bialych znakow
        if($_GET["action"] == 1){$_GET["action"] = 0 ;}
        if($_GET["action"] == 2){$_GET["action"] = 255 ;}
        if( in_array($_GET["action"], array("0", "255")) && $_GET["action"] != $status ){
        $script = exec("echo $_GET[action] > /sys/class/leds/tp-link:green:usb/brightness");
        $message = shell_exec($script);
        header('Location: sterowanie.php');
        exit; }
        $icon = ($status == "255") ? '<a class="medium green niceButton" href="?action=1"><img width="40px" height="40px" src="../ico/on.ico">Piec</a>' : '<a class="medium red niceButton" href="?action=2"><img width="40px" height="40px" src="../ico/off.ico">Piec</a>';
        echo $icon;
        ?>
    </div>