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<?php $allIntlCharConstants = (new ReflectionClass('IntlChar'))->getConstants(); $constants = array_filter($allIntlCharConstants, function($name){ return strpos('CHAR_CATEGORY_', $name) !== false; }); IntlChar::enumCharTypes(function($start, $end, $type) { printf("U+%04x through U+%04x are in category %d\n", $start, $end, array_search($type, $constants)); });
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $constants in /in/AfZpA on line 9 Fatal error: Uncaught TypeError: array_search(): Argument #2 ($haystack) must be of type array, null given in /in/AfZpA:9 Stack trace: #0 /in/AfZpA(9): array_search(15, NULL) #1 [internal function]: {closure}(0, 32, 15) #2 /in/AfZpA(8): IntlChar::enumCharTypes(Object(Closure)) #3 {main} thrown in /in/AfZpA on line 9
Process exited with code 255.

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