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<?php $test = 'array[]'; $array = explode('[', $test); echo $array[0];
based on qcHCM
Finding entry points
Branch analysis from position: 0
Jump found. Position 1 = -2
filename:       /in/BYVKJ
function name:  (null)
number of ops:  9
compiled vars:  !0 = $test, !1 = $array
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   3     0  E >   ASSIGN                                                   !0, 'array%5B%5D'
   4     1        INIT_FCALL                                               'explode'
         2        SEND_VAL                                                 '%5B'
         3        SEND_VAR                                                 !0
         4        DO_ICALL                                         $3      
         5        ASSIGN                                                   !1, $3
   5     6        FETCH_DIM_R                                      $5      !1, 0
         7        ECHO                                                     $5
         8      > RETURN                                                   1

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