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<?php $format = 'Y-m-d\TH:i'; $date = '2017-01-01T45:00'; var_dump( DateTime::createFromFormat($format, $date)->format($format) === $date );
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/FS9sZ
function name:  (null)
number of ops:  14
compiled vars:  !0 = $format, !1 = $date
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 'Y-m-d%5CTH%3Ai'
    4     1        ASSIGN                                                   !1, '2017-01-01T45%3A00'
    5     2        INIT_FCALL                                               'var_dump'
    6     3        INIT_STATIC_METHOD_CALL                                  'DateTime', 'createFromFormat'
          4        SEND_VAR                                                 !0
          5        SEND_VAR                                                 !1
          6        DO_FCALL                                      0  $4      
          7        INIT_METHOD_CALL                                         $4, 'format'
          8        SEND_VAR_EX                                              !0
          9        DO_FCALL                                      0  $5      
         10        IS_IDENTICAL                                     ~6      !1, $5
         11        SEND_VAL                                                 ~6
         12        DO_ICALL                                                 
    7    13      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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