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<?php $x = 1; $z = 2; $y = 3; echo implode(':', compact('x', 'z', 'y'));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Wobr5
function name:  (null)
number of ops:  14
compiled vars:  !0 = $x, !1 = $z, !2 = $y
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 1
    4     1        ASSIGN                                                   !1, 2
    5     2        ASSIGN                                                   !2, 3
    7     3        INIT_FCALL                                               'implode'
          4        SEND_VAL                                                 '%3A'
          5        INIT_FCALL                                               'compact'
          6        SEND_VAL                                                 'x'
          7        SEND_VAL                                                 'z'
          8        SEND_VAL                                                 'y'
          9        DO_ICALL                                         $6      
         10        SEND_VAR                                                 $6
         11        DO_ICALL                                         $7      
         12        ECHO                                                     $7
         13      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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