3v4l.org

run code in 300+ PHP versions simultaneously
<?php $json = <<<JSON [{ "meta_device_id":"NEA8000000345", "name":"Jaffna", "description":"aq", "latitude":9.779333, "longitude":80.04059, "pm10":31.0, "pm25":55.0, "pm100":74.0, "co2":4996.0, "temperature":27.94, "timestamp":1647383654251 }, { "meta_device_id":"NEA8000011", "name":"Galle", "description":"MET Department, Galle", "latitude":6.0297956, "longitude":80.21212, "pm10":28.0, "pm25":43.0, "pm100":52.0, "co2":2264.81, "temperature":34.59, "timestamp":1647398582681 }] JSON; $yummy = json_decode($json); // Grab the "meta_device_id" column from each device found. $device_ids = array_column($yummy, 'meta_device_id'); foreach ($device_ids as $id) { echo $id, PHP_EOL; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 11, Position 2 = 15
Branch analysis from position: 11
2 jumps found. (Code = 78) Position 1 = 12, Position 2 = 15
Branch analysis from position: 12
1 jumps found. (Code = 42) Position 1 = 11
Branch analysis from position: 11
Branch analysis from position: 15
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 15
filename:       /in/ovAZa
function name:  (null)
number of ops:  17
compiled vars:  !0 = $json, !1 = $yummy, !2 = $device_ids, !3 = $id
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, '%5B%7B%0A++++%22meta_device_id%22%3A%22NEA8000000345%22%2C%0A++++%22name%22%3A%22Jaffna%22%2C%0A++++%22description%22%3A%22aq%22%2C%0A++++%22latitude%22%3A9.779333%2C%0A++++%22longitude%22%3A80.04059%2C%0A++++%22pm10%22%3A31.0%2C%0A++++%22pm25%22%3A55.0%2C%0A++++%22pm100%22%3A74.0%2C%0A++++%22co2%22%3A4996.0%2C%0A++++%22temperature%22%3A27.94%2C%0A++++%22timestamp%22%3A1647383654251%0A%7D%2C+%7B%0A++++%22meta_device_id%22%3A%22NEA8000011%22%2C%0A++++%22name%22%3A%22Galle%22%2C%0A++++%22description%22%3A%22MET+Department%2C+Galle%22%2C%0A++++%22latitude%22%3A6.0297956%2C%0A++++%22longitude%22%3A80.21212%2C%0A++++%22pm10%22%3A28.0%2C%0A++++%22pm25%22%3A43.0%2C%0A++++%22pm100%22%3A52.0%2C%0A++++%22co2%22%3A2264.81%2C%0A++++%22temperature%22%3A34.59%2C%0A++++%22timestamp%22%3A1647398582681%0A%7D%5D'
   31     1        INIT_FCALL                                               'json_decode'
          2        SEND_VAR                                                 !0
          3        DO_ICALL                                         $5      
          4        ASSIGN                                                   !1, $5
   34     5        INIT_FCALL                                               'array_column'
          6        SEND_VAR                                                 !1
          7        SEND_VAL                                                 'meta_device_id'
          8        DO_ICALL                                         $7      
          9        ASSIGN                                                   !2, $7
   36    10      > FE_RESET_R                                       $9      !2, ->15
         11    > > FE_FETCH_R                                               $9, !3, ->15
   37    12    >   ECHO                                                     !3
         13        ECHO                                                     '%0A'
   36    14      > JMP                                                      ->11
         15    >   FE_FREE                                                  $9
   38    16      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
257.35 ms | 1011 KiB | 15 Q