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<?php $text = 'text required name="first_name" label="First Name" z="I like me"'; $res = preg_split("/\s(?![\w\s]+\")/", $text); print_r($res);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/c4JFl
function name:  (null)
number of ops:  10
compiled vars:  !0 = $text, !1 = $res
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, 'text+required+name%3D%22first_name%22+label%3D%22First+Name%22+z%3D%22I+like+me%22'
    3     1        INIT_FCALL                                               'preg_split'
          2        SEND_VAL                                                 '%2F%5Cs%28%3F%21%5B%5Cw%5Cs%5D%2B%22%29%2F'
          3        SEND_VAR                                                 !0
          4        DO_ICALL                                         $3      
          5        ASSIGN                                                   !1, $3
    5     6        INIT_FCALL                                               'print_r'
          7        SEND_VAR                                                 !1
          8        DO_ICALL                                                 
          9      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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