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<?php $strings = [ "TeSt", "Te s-t", "", "Te4St" ]; foreach ($strings as $string) { if(preg_match('#^[a-z -]+$#i', $string, $matches)){ echo $matches[0] . PHP_EOL; } }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 2, Position 2 = 13
Branch analysis from position: 2
2 jumps found. (Code = 78) Position 1 = 3, Position 2 = 13
Branch analysis from position: 3
2 jumps found. (Code = 43) Position 1 = 9, Position 2 = 12
Branch analysis from position: 9
1 jumps found. (Code = 42) Position 1 = 2
Branch analysis from position: 2
Branch analysis from position: 12
Branch analysis from position: 13
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 13
filename:       /in/vOTSm
function name:  (null)
number of ops:  15
compiled vars:  !0 = $strings, !1 = $string, !2 = $matches
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    9     1      > FE_RESET_R                                       $4      !0, ->13
          2    > > FE_FETCH_R                                               $4, !1, ->13
   10     3    >   INIT_FCALL                                               'preg_match'
          4        SEND_VAL                                                 '%23%5E%5Ba-z+-%5D%2B%24%23i'
          5        SEND_VAR                                                 !1
          6        SEND_REF                                                 !2
          7        DO_ICALL                                         $5      
          8      > JMPZ                                                     $5, ->12
   11     9    >   FETCH_DIM_R                                      ~6      !2, 0
         10        CONCAT                                           ~7      ~6, '%0A'
         11        ECHO                                                     ~7
    9    12    > > JMP                                                      ->2
         13    >   FE_FREE                                                  $4
   13    14      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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