screen_meta in /wp-admin/includes/template.php
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Continue readingSanitize user field based on context.Possible context values are: ‘raw’, ‘edit’, ‘db’, ‘display’, ‘attribute’ and ‘js’. The ‘display’ context is used by default. ‘attribute’ and ‘js’ contexts are treated like ‘display’ when calling filters.
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Continue readingSanitize username stripping out unsafe characters.Removes tags, octets, entities, and if strict is enabled, will only keep alphanumeric, _, space, ., -, @. After sanitizing, it passes the username, raw username (the username in the parameter), and the value of $strict as parameters for the ‘sanitize_user’ filter.
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Continue readingSanitizes title or use fallback title.Specifically, HTML and PHP tags are stripped. Further actions can be added via the plugin API. If $title is empty and $fallback_title is set, the latter will be used.
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Continue reading