Quick script to echo the CPU temperature in F and C of a Raspberry Pi Zero, in my case

index.php

<?php
$command = "cat /sys/class/thermal/thermal_zone0/temp";
$temp = exec($command);
$tempC1 = ((float) $temp)/1000;
$tempF1 = ($tempC1*(9.0 / 5.0)) + 32.0;
$str = '{"cpu_temperature_F":'.number_format($tempF1,2).',"cpu_temperature_C":'.number_format($tempC1,2).'}';
echo $str;
?>