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<?php $strs = [' 2,564.30', '-2,564.30']; print_r(preg_replace('~^-\K|[^-\d.]~', '', $strs));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/UTjgS
function name:  (null)
number of ops:  10
compiled vars:  !0 = $strs
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    4     1        INIT_FCALL                                               'print_r'
          2        INIT_FCALL                                               'preg_replace'
          3        SEND_VAL                                                 '%7E%5E-%5CK%7C%5B%5E-%5Cd.%5D%7E'
          4        SEND_VAL                                                 ''
          5        SEND_VAR                                                 !0
          6        DO_ICALL                                         $2      
          7        SEND_VAR                                                 $2
          8        DO_ICALL                                                 
          9      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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