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<?php date_default_timezone_set('UTC'); $timestamp = mktime(0,0,0,11,1,2014); var_dump(strtotime('4 thursdays', $timestamp)); var_dump(strtotime('first thursday + 3 weeks', $timestamp)); date_default_timezone_set('America/Chicago'); $timestamp = mktime(0,0,0,11,1,2014); var_dump(strtotime('4 thursdays', $timestamp)); var_dump(strtotime('first thursday + 3 weeks', $timestamp));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/LLkCE
function name:  (null)
number of ops:  53
compiled vars:  !0 = $timestamp
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   2     0  E >   INIT_FCALL                                               'date_default_timezone_set'
         1        SEND_VAL                                                 'UTC'
         2        DO_ICALL                                                 
   3     3        INIT_FCALL                                               'mktime'
         4        SEND_VAL                                                 0
         5        SEND_VAL                                                 0
         6        SEND_VAL                                                 0
         7        SEND_VAL                                                 11
         8        SEND_VAL                                                 1
         9        SEND_VAL                                                 2014
        10        DO_ICALL                                         $2      
        11        QM_ASSIGN                                                !0
   4    12        INIT_FCALL                                               'var_dump'
        13        INIT_FCALL                                               'strtotime'
        14        SEND_VAL                                                 '4+thursdays'
        15        SEND_VAR                                                 !0
        16        DO_ICALL                                         $4      
        17        SEND_VAR                                                 $4
        18        DO_ICALL                                                 
   5    19        INIT_FCALL                                               'var_dump'
        20        INIT_FCALL                                               'strtotime'
        21        SEND_VAL                                                 'first+thursday+%2B+3+weeks'
        22        SEND_VAR                                                 !0
        23        DO_ICALL                                         $6      
        24        SEND_VAR                                                 $6
        25        DO_ICALL                                                 
   6    26        INIT_FCALL                                               'date_default_timezone_set'
        27        SEND_VAL                                                 'America%2FChicago'
        28        DO_ICALL                                                 
   7    29        INIT_FCALL                                               'mktime'
        30        SEND_VAL                                                 0
        31        SEND_VAL                                                 0
        32        SEND_VAL                                                 0
        33        SEND_VAL                                                 11
        34        SEND_VAL                                                 1
        35        SEND_VAL                                                 2014
        36        DO_ICALL                                         $9      
        37        QM_ASSIGN                                                !0
   8    38        INIT_FCALL                                               'var_dump'
        39        INIT_FCALL                                               'strtotime'
        40        SEND_VAL                                                 '4+thursdays'
        41        SEND_VAR                                                 !0
        42        DO_ICALL                                         $11     
        43        SEND_VAR                                                 $11
        44        DO_ICALL                                                 
   9    45        INIT_FCALL                                               'var_dump'
        46        INIT_FCALL                                               'strtotime'
        47        SEND_VAL                                                 'first+thursday+%2B+3+weeks'
        48        SEND_VAR                                                 !0
        49        DO_ICALL                                         $13     
        50        SEND_VAR                                                 $13
        51        DO_ICALL                                                 
        52      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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