File: wp-admin/includes/class-wp-site-health.php
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Filters actionable information to tackle the problem. It can be a link to an external guide.
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Filters description to be shown on Site Health warning when threshold is met.
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Calculates total amount of autoloaded data.
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Tests the number of autoloaded options.
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Filters max bytes threshold to trigger warning in Site Health.
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Tests available disk space for updates.
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Tests if plugin and theme temporary backup directories are writable or can be created.
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Returns a list of available persistent object cache services.
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Filters the persistent object cache services available to the user.
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Filters the threshold below which a response time is considered good.
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Determines whether to suggest using a persistent object cache.
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Filters whether to suggest use of a persistent object cache and bypass default threshold checks.
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Filters the thresholds used to determine whether to suggest the use of a persistent object cache.
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Returns a list of headers and its verification callback to verify if page cache is enabled or not.
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Filters the list of cache headers supported by core.
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Checks if site has page cache enabled or not.
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Gets page cache details.
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Gets the threshold below which a response time is considered good.
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Tests if a full page cache is available.
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Tests if the site uses persistent object cache and recommends to use it if not.
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Filters the action URL for the persistent object cache health check.
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Filters the second paragraph of the health check’s description when suggesting the use of a persistent object cache.
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Outputs the content of a tab in the Site Health screen.
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Checks if the current environment type is set to ‘development’ or ‘local’.
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Tests if the Authorization header has the expected values.
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Tests if plugin and theme auto-updates appear to be configured correctly.
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Tests if ‘file_uploads’ directive in PHP.ini is turned off.
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Checks for potential issues with plugin and theme auto-updates.
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Tests if there’s an active PHP session that can affect loopback requests.
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Creates a weekly cron event, if one does not already exist.