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<?php $regex = '#\d\s-\s\d#'; $string = '66 hello 2.3 - 44 world 99 -8 another dash - but no numbers'; echo preg_replace($regex, '-', $string);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Fesve
function name:  (null)
number of ops:  9
compiled vars:  !0 = $regex, !1 = $string
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, '%23%5Cd%5Cs-%5Cs%5Cd%23'
    4     1        ASSIGN                                                   !1, '66+hello+2.3+-+44+world+99+-8+another+dash+-+but+no+numbers'
    5     2        INIT_FCALL                                               'preg_replace'
          3        SEND_VAR                                                 !0
          4        SEND_VAL                                                 '-'
          5        SEND_VAR                                                 !1
          6        DO_ICALL                                         $4      
          7        ECHO                                                     $4
          8      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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