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<?php $string = '3:1,1:2,2:3'; $string = preg_replace('#1:(\d*),#', 'whateverToReplaceWith', $string); echo $string;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/T8FlV
function name:  (null)
number of ops:  9
compiled vars:  !0 = $string
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, '3%3A1%2C1%3A2%2C2%3A3'
    4     1        INIT_FCALL                                               'preg_replace'
          2        SEND_VAL                                                 '%231%3A%28%5Cd%2A%29%2C%23'
          3        SEND_VAL                                                 'whateverToReplaceWith'
          4        SEND_VAR                                                 !0
          5        DO_ICALL                                         $2      
          6        ASSIGN                                                   !0, $2
    5     7        ECHO                                                     !0
          8      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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