[wp-trac] [WordPress Trac] #53635: PHP 8.1: various compatibility fixes

[WordPress Trac]

#53635: PHP 8.1: various compatibility fixes
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 Reporter:  SergeyBiryukov  |       Owner:  (none)
     Type:  task (blessed)  |      Status:  new
 Priority:  normal          |   Milestone:  5.9
Component:  General         |     Version:
 Severity:  normal          |  Resolution:
 Keywords:  php81           |     Focuses:  coding-standards
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Comment (by SergeyBiryukov):

 In [changeset:"51396" 51396]:
 {{{
 #!CommitTicketReference repository="" revision="51396"
 Code Modernization: Only check collation in `wpdb` methods if the query is
 not empty.

 This avoids a deprecation notice on PHP 8.1 caused by passing `null`
 instead of a string to `ltrim()` in `wpdb::check_safe_collation()`, and
 maintains the current behaviour.

 Follow-up to [30345], [32162], [33455].

 See #53635.
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/53635#comment:1>
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