[wp-trac] [WordPress Trac] #40390: Wrong time (and date) in mail header send by phpmailer

[WordPress Trac]

#40390: Wrong time (and date) in mail header send by phpmailer
--------------------------+------------------------------
 Reporter:  Drivingralle  |       Owner:
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  Mail          |     Version:  4.7.3
 Severity:  normal        |  Resolution:
 Keywords:                |     Focuses:
--------------------------+------------------------------

Comment (by Rarst):

 Note that `current_time()` itself calls `date()` and assumes default
 timezone. In other words it will ignore WP time zone and output completely
 invalid stuff unless `gmt` arg is set to true.

 {{{#!php
 <?php
 var_dump( date_default_timezone_get() );
 // "UTC"

 var_dump( date('D, j M Y H:i:s O') );
 // "Tue, 2 May 2017 11:38:08 +0000" << correct UTC

 var_dump( current_time( 'D, j M Y H:i:s O' ) );
 // "Tue, 2 May 2017 14:38:08 +0000" << local time, invalid time zone

 var_dump( current_time( 'D, j M Y H:i:s O', true ) );
 // "Tue, 2 May 2017 11:38:08 +0000" << correct UTC
 }}}


 So your last suggestion to use `current_time()` will just increase
 breakage. :(

 I am not sure why would times be "wrong" without more context. If `date()`
 without input is used they would be ''correct'', just always in UTC (which
 consuming email clients should be able to display in desired time zone I
 would assume).

 The more likely issue is that WP API is feeding broken input into mailer
 class.

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Ticket URL: <https://core.trac.wordpress.org/ticket/40390#comment:1>
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