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<?php /* 7. Write a PHP script to remove all characters from a string except a-z A-Z 0-9 or " ". Go to the editor Sample string : abcde$ddfd @abcd )der] Expected Result : abcdeddfd abcd der - See more at: http://www.w3resource.com/php-exercises/php-regular-expression-exercises.php#sthash.fzCJEK6c.dpuf */ $text = 'abcde$ddfd @abcd )der]'; $reg = "/[^a-zA-Z0-9 ]/"; print preg_replace($reg, "", $text); ?>
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/MGh5K
function name:  (null)
number of ops:  9
compiled vars:  !0 = $text, !1 = $reg
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    9     0  E >   ASSIGN                                                   !0, 'abcde%24ddfd+%40abcd+%29der%5D'
   10     1        ASSIGN                                                   !1, '%2F%5B%5Ea-zA-Z0-9+%5D%2F'
   12     2        INIT_FCALL                                               'preg_replace'
          3        SEND_VAR                                                 !1
          4        SEND_VAL                                                 ''
          5        SEND_VAR                                                 !0
          6        DO_ICALL                                         $4      
          7        ECHO                                                     $4
   16     8      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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