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sanitize_user

Sanitize 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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sanitize_title_with_dashes

Sanitizes title, replacing whitespace and a few other characters with dashes.Limits the output to alphanumeric characters, underscore (_) and dash (-). Whitespace becomes a dash.

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sanitize_title

Sanitizes 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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sanitize_text_field

Sanitize a string from user input or from the dbcheck for invalid UTF-8, Convert single < characters to entity, strip all tags, remove line breaks, tabs and extra white space, strip octets.

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