[wp-trac] [WordPress Trac] #39767: wp-admin failures upon line breaks in functions.php

[WordPress Trac]

#39767: wp-admin failures upon line breaks in functions.php
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 Reporter:  gregvie      |       Owner:
     Type:  enhancement  |      Status:  closed
 Priority:  normal       |   Milestone:
Component:  General      |     Version:  4.7.2
 Severity:  normal       |  Resolution:  invalid
 Keywords:               |     Focuses:
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Changes (by swissspidy):

 * status:  new => closed
 * resolution:   => invalid
 * component:  Customize => General
 * milestone:  Awaiting Review =>


Comment:

 Hey there,

 Welcome to WordPress Trac!

 Whitespace after closing PHP tags causing all sorts of weirdness is not a
 bug in WordPress, but simply how PHP works. From  the
 [http://php.net/manual/en/language.basic-syntax.phptags.php PHP website]:

 > If a file is pure PHP code, it is preferable to omit the PHP closing tag
 at the end of the file. This prevents accidental whitespace or new lines
 being added after the PHP closing tag, which may cause unwanted effects
 because PHP will start output buffering when there is no intention from
 the programmer to send any output at that point in the script.

  If your theme or plugin has line breaks after `?>`, you need to inform
 the developer to fix this (ideally by omitting the closing tag at the end
 of the file). Again, since this is how PHP is designed, WordPress cannot
 account for this.

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Ticket URL: <https://core.trac.wordpress.org/ticket/39767#comment:1>
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