Function utf8_specials_pattern
Used internally. Builds a PCRE pattern from the $UTF8_SPECIAL_CHARS array defined in this file The $UTF8_SPECIAL_CHARS should contain all special characters (non-letter/non-digit) defined in the various local charsets - it's not a complete list of non-alphanum characters in UTF-8. It's not perfect but should match most cases of special chars. This function adds the control chars 0x00 to 0x19 to the array of special chars (they are not included in $UTF8_SPECIAL_CHARS)
Package: utf8
See:
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Located at vendor/joomla/string/src/phputf8/utils/specials.php
See:
utf8_from_unicode()See:
utf8_is_word_chars()See:
utf8_strip_specials()Located at vendor/joomla/string/src/phputf8/utils/specials.php
Return value summary
string
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