PHP Compatibility Index

Is UserHeat Plugin compatible with PHP 8?

Version 1.1.11 · 5,000+ active installs · requires PHP 5.4

Works on PHP 8.0–8.5, with deprecation notices from 8.2

No removed PHP features found in UserHeat Plugin 1.1.11. It uses 5 deprecated feature(s) that only log notices today.

PHP 8.0
✓
PHP 8.1
✓
PHP 8.2
⚠ 5
PHP 8.3
⚠ 5
PHP 8.4
⚠ 5
PHP 8.5
⚠ 5

✓ no problems · ⚠ deprecation notices only (still works) · ✗ uses something removed in that PHP version

Not updated for 2.6 years. Nobody seems to maintain this plugin, so problems found here are unlikely to be fixed. If your site uses it, look for a maintained alternative before upgrading PHP.
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Deprecated (works today, logs notices)

File:lineWhat
userheat.php:63Using ${var} in strings is deprecated since PHP 8.2, use {$var} instead. Found: ${groupid}
userheat.php:102Using ${var} in strings is deprecated since PHP 8.2, use {$var} instead. Found: ${pluginDir}
userheat.php:103Using ${var} in strings is deprecated since PHP 8.2, use {$var} instead. Found: ${pluginDir}
userheat.php:104Using ${var} in strings is deprecated since PHP 8.2, use {$var} instead. Found: ${pluginDir}
userheat.php:105Using ${var} in strings is deprecated since PHP 8.2, use {$var} instead. Found: ${pluginDir}

Plugin page on WordPress.org: userheat