pistats.php

<?php
//ini_set('display_errors', 1);

// CPU temperature lazy mode
$temp = shell_exec('sudo vcgencmd measure_temp');
$temp = substr($temp, 5, -3);

// ARM frequency lazy mode
$freq = shell_exec('cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq');
$freq = intval($freq) / 1000;

// Throttle
$codes=array(
0=>"Under-voltage detected",
1=>"Arm frequency capped",
2=>"Currently throttled",
3=>"Soft temperature limit active",
16=>"Under-voltage has occurred",
17=>"Arm frequency capped has occurred",
18=>"Throttling has occurred",
19=>"Soft temperature limit has occurred");

$thro = '';
$output=shell_exec("sudo vcgencmd get_throttled");
$output=explode("x",$output);
$output=array_map('trim', $output);

if ($output[1] == "0") {
        $thro = "No";
} else {
        $output=str_split($output[1]);
        $bincode="";
        foreach ($output as $hex) {
                $bincode.=str_pad(base_convert($hex,16,2),4,"0",STR_PAD_LEFT);
        }
        $bincode=array_reverse(str_split($bincode));
        foreach ($bincode as $k=>$v) {
                if ($v) {
                        $thro = $codes[$k];
                }
        }
}
?>