php8 - don't pass null as string

[demeritcowboy]

Overview

Some deprecations

Before

• htmlentities(): Passing null to parameter #1 ($string) of type string is deprecated
• mysqli_real_escape_string(): Passing null to parameter #2 ($string) of type string is deprecated

After

Technical Details

These should be coming up during tests/phpunit/CRM/Core/DAOTest.php, but the mysqli one gets hidden by the @ in pear/db/myqli, and the other one I dunno what's hiding it. When I run it in a different test environment they show up as deprecations (not fails, but listed separately as deprecations). It think it's phpunit-bridge that shows it.

Comments

[civibot]

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[demeritcowboy]

Noting that the deprecations do appear in the output at #25009 (comment)