[wp-trac] [WordPress Trac] #49922: PHP Compatibility fixes for 5.5

[WordPress Trac]

#49922: PHP Compatibility fixes for 5.5
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 Reporter:  desrosj           |      Owner:  desrosj
     Type:  task (blessed)    |     Status:  assigned
 Priority:  normal            |  Milestone:  5.5
Component:  General           |    Version:
 Severity:  normal            |   Keywords:
  Focuses:  coding-standards  |
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 Previously in #46152, a job was added to Travis builds to run the
 `PHPCompatibilityWP` ruleset to detect potential compatibility issues with
 supported versions of PHP.

 This job was very helpful identifying PHP 7.4 compatibility issues so that
 they could be fixed prior to support being added in 5.3. However, there
 are still some warnings and errors being reported.

 Tickets are being created for the more controversial items (see #49919),
 but each of the other issues reported need to be investigated individually
 to determine if the ruleset is reporting a false positive or a
 compatibility issue that actually needs to be corrected.

 This ticket is for handling these remaining issues in order to get the
 compatibility job passing so that it can be used to identify newly
 introduced compatibility issues.

 Previously: #46152, #48966.
 Related: #49919.

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Ticket URL: <https://core.trac.wordpress.org/ticket/49922>
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