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<?php echo date( 'Y M j h:i:s', strtotime( '01:01 on first day of last month' ) );
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/b8kHj
function name:  (null)
number of ops:  9
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'date'
          1        SEND_VAL                                                 'Y+M+j+h%3Ai%3As'
          2        INIT_FCALL                                               'strtotime'
          3        SEND_VAL                                                 '01%3A01+on+first+day+of+last+month'
          4        DO_ICALL                                         $0      
          5        SEND_VAR                                                 $0
          6        DO_ICALL                                         $1      
          7        ECHO                                                     $1
          8      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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