Proxy Cache Purge 5.9.2
Does Proxy Cache Purge work with WordPress 7.0 and PHP 8.1.12? A smoke test was performed on .
Summary
Errors
| 2 | PHP warnings |
| No JavaScript exceptions | |
| All test pages loaded successfully | |
| No resource errors |
Performance
Memory usage: 119.66 KiB
The average PHP memory usage increased by this amount after activating by the plugin.
Page speed impact:
insignificant.
The plugin didn't make the site noticeably slower.
Environment
| WordPress version | 7.0 |
|---|---|
| PHP version | 8.1.12 |
| MySQL version | 10.6.10 |
| PHP memory limit | 512M |
Plugin Info
| Last updated | |
|---|---|
| Active installs | 40,000+ |
| WordPress.org page | https://wordpress.org/plugins/varnish-http-purge/ |
| Badges |
|
Pages 6
Plugins ‹ Test site — WordPress
| URL | /wp-admin/plugins.php?plugin_status=all&paged=1&s |
|---|---|
| Requested URL | /wp-admin/plugins.php?action=activate&plugin=varnish-http-purge%2Fvarnish-http-purge.php&plugin_status=all&paged=1&s&_wpnonce=f16400b329 |
| Aspect | after-activation |
| HTTP status | 200 |
| Load time | 1.003 s |
| Memory usage | 4.01 MiB |
| JS errors | None |
| Resource errors | None |
Proxy Cache
| URL | /wp-admin/admin.php?page=varnish-page |
|---|---|
| Aspect | menu-item |
| HTTP status | 200 |
| Load time | 0.497 s |
| Memory usage | 3.97 MiB |
| JS errors | None |
| Resource errors | None |
Proxy Cache → Check Caching
| URL | /wp-admin/admin.php?page=varnish-check-caching |
|---|---|
| Aspect | menu-item |
| HTTP status | 200 |
| Load time | 0.678 s |
| Memory usage | 3.97 MiB |
| JS errors | None |
| Resource errors | None |
Proxy Cache → Check Caching → Header Analysis
| URL | /wp-admin/admin.php?page=varnish-check-caching |
|---|---|
| Aspect | menu-item-tab |
| HTTP status | 200 |
| Load time | 0.476 s |
| Memory usage | 3.97 MiB |
| JS errors | None |
| Resource errors | None |
Proxy Cache → Get Cache Warming
| URL | /wp-admin/admin.php?page=vhp-cache-warming |
|---|---|
| Aspect | menu-item |
| HTTP status | 200 |
| Load time | 0.117 s |
| Memory usage | N/A |
| JS errors | None |
| Resource errors | None |
Test site – Just another WordPress site
| URL | / |
|---|---|
| Aspect | front-page |
| HTTP status | 200 |
| Load time | 0.232 s |
| Memory usage | 4.28 MiB |
| JS errors | None |
| Resource errors | None |
Benchmark
| URL | Load time | Memory usage | ||||
|---|---|---|---|---|---|---|
| Inactive | Active | Change | Inactive | Active | Change | |
| /wp-admin/index.php | 0.678 s | 0.658 s | -0.020 s | 3.93 MiB | 4.06 MiB | + 135.02 KiB |
| /wp-admin/edit.php | 0.522 s | 0.518 s | -0.004 s | 3.98 MiB | 4.11 MiB | + 135.45 KiB |
| /wp-admin/post-new.php | 1.984 s | 1.755 s | -0.229 s | 6.56 MiB | 6.69 MiB | + 139.06 KiB |
| /wp-admin/upload.php | 0.742 s | 0.700 s | -0.042 s | 3.89 MiB | 4.02 MiB | + 129.36 KiB |
| /wp-admin/options-writing.php | 0.533 s | 0.881 s | +0.348 s | 3.86 MiB | 3.97 MiB | + 112.94 KiB |
| /wp-admin/media-new.php | 0.634 s | 0.560 s | -0.074 s | 3.85 MiB | 3.97 MiB | + 121.13 KiB |
| /wp-admin/edit-tags.php?taxonomy=category | 0.490 s | 0.502 s | +0.012 s | 3.86 MiB | 3.99 MiB | + 126.3 KiB |
| /wp-admin/post-new.php?post_type=page | 1.930 s | 1.792 s | -0.138 s | 6.55 MiB | 6.68 MiB | + 134.65 KiB |
| /wp-admin/options-discussion.php | 0.639 s | 0.703 s | +0.064 s | 3.86 MiB | 3.97 MiB | + 109.44 KiB |
| /wp-admin/edit-comments.php | 0.523 s | 0.534 s | +0.011 s | 3.89 MiB | 4 MiB | + 116.99 KiB |
| / | 0.288 s | 0.197 s | -0.091 s | 4.23 MiB | 4.28 MiB | + 55.86 KiB |
| Average | 0.815 s | 0.800 s | -0.015 s | 4.41 MiB | 4.52 MiB | + 119.66 KiB |
Code Statistics
Note: Third-party libraries and minified JS/CSS files are excluded from these statistics where possible, so the numbers you see here may be lower than those reported by other tools.
| Language | % | Lines of code | Comment lines | Files | |
|---|---|---|---|---|---|
| PHP | 99.5% | 4,394 | 1,902 | 7 | |
| CSS | 0.5% | 21 | 3 | 1 | |
| Total | 4,415 | 1,905 | 8 | ||
PHP Code Analysis | More results »
| Lines of code | 4,491 |
|---|---|
| Total complexity | 962 |
| Median class complexity | 230.0 |
| Median method complexity | 4.0 |
| Most complex class | VarnishPurger |
| Most complex function | VarnishPurger::purge_post() |
| Classes | 5 |
|---|---|
| Methods | 125 |
| Functions | 2 |
Additions
Things that the plugin adds to the site. This section is not intended to be comprehensive. The test tool only looks for a few specific types of added content.
Options wp_options 6
- vhp_purge_backend
- vhp_varnish_debug
- vhp_varnish_devmode
- vhp_varnish_ip
- vhp_varnish_max_posts_before_all
- vhp_varnish_url
PHP Error Log 2 lines
[27-May-2026 13:12:57 UTC] PHP Warning: Cannot modify header information - headers already sent by (output started at /wp-admin/menu-header.php:153) in /wp-includes/pluggable.php on line 1535
[27-May-2026 13:12:57 UTC] PHP Warning: Cannot modify header information - headers already sent by (output started at /wp-admin/menu-header.php:153) in /wp-includes/pluggable.php on line 1538