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Predefined Constants

The constants below are defined by this extension, and will only be available when the extension has either been compiled into PHP or dynamically loaded at runtime.

MB_OVERLOAD_MAIL (integer)
MB_OVERLOAD_STRING (integer)
MB_OVERLOAD_REGEX (integer)
MB_CASE_UPPER (integer)
MB_CASE_LOWER (integer)
MB_CASE_TITLE (integer)
MB_CASE_FOLD (integer)
Available since PHP 7.3.
MB_CASE_LOWER_SIMPLE (integer)
Available since PHP 7.3.
MB_CASE_TITLE_SIMPLE (integer)
Available since PHP 7.3.
MB_CASE_FOLD_SIMPLE (integer)
Used by case-insensitive operations. Available since PHP 7.3.
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