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<?php $tests = ['âa', 'Bbbbb', 'Éé', 'iou', 'Δδ']; $tests[] = 'ⅷ'; $tests[] = 'Ⅷ'; foreach ($tests as $test) { echo "\n{$test}:"; echo "\n\thasLetterVariants: " , preg_match('~^\p{L&}~u', $test) ? 'yes' : 'no'; echo "\n\tPREG (ext): " , preg_match('~^\p{Lu}~u', $test) ? 'upper' : 'not upper'; echo "\n\tPREG: " , preg_match('~^[\p{Lu}\x{2160}-\x{216F}]~u', $test) ? 'upper' : 'not upper'; echo "\n\tCTYPE: " , ctype_upper(mb_substr($test, 0, 1)) ? 'upper' : 'not upper'; echo "\n\t< a: " , mb_substr($test, 0, 1) < 'a' ? 'upper' : 'not upper'; $chr = mb_substr ($test, 0, 1, "UTF-8"); echo "\n\tMB: " , mb_strtoupper($chr, "UTF-8") == $chr ? 'upper' : 'not upper'; echo "\n\tIntlChar:" , IntlChar::isUUppercase(mb_substr($test, 0, 1)) ? 'upper' : 'not upper'; }
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.32, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
âa: hasLetterVariants: yes PREG (ext): not upper PREG: not upper CTYPE: not upper < a: not upper MB: not upper IntlChar:not upper Bbbbb: hasLetterVariants: yes PREG (ext): upper PREG: upper CTYPE: upper < a: upper MB: upper IntlChar:upper Éé: hasLetterVariants: yes PREG (ext): upper PREG: upper CTYPE: not upper < a: not upper MB: upper IntlChar:upper iou: hasLetterVariants: yes PREG (ext): not upper PREG: not upper CTYPE: not upper < a: not upper MB: not upper IntlChar:not upper Δδ: hasLetterVariants: yes PREG (ext): upper PREG: upper CTYPE: not upper < a: not upper MB: upper IntlChar:upper ⅷ: hasLetterVariants: no PREG (ext): not upper PREG: not upper CTYPE: not upper < a: not upper MB: not upper IntlChar:not upper Ⅷ: hasLetterVariants: no PREG (ext): not upper PREG: upper CTYPE: not upper < a: not upper MB: upper IntlChar:upper
Output for 7.4.33
âa: hasLetterVariants: yes PREG (ext): not upper PREG: not upper CTYPE: not upper < a: not upper MB: not upper IntlChar: Fatal error: Uncaught Error: Class 'IntlChar' not found in /in/5kao7:17 Stack trace: #0 {main} thrown in /in/5kao7 on line 17
Process exited with code 255.
Output for 7.2.0 - 7.2.34
âa: hasLetterVariants: yes PREG (ext): not upper PREG: not upper CTYPE: not upper < a: not upper MB: not upper IntlChar:not upper Bbbbb: hasLetterVariants: yes PREG (ext): upper PREG: upper CTYPE: upper < a: upper MB: upper IntlChar:upper Éé: hasLetterVariants: yes PREG (ext): upper PREG: upper CTYPE: not upper < a: not upper MB: upper IntlChar:upper iou: hasLetterVariants: yes PREG (ext): not upper PREG: not upper CTYPE: not upper < a: not upper MB: not upper IntlChar:not upper Δδ: hasLetterVariants: yes PREG (ext): upper PREG: upper CTYPE: not upper < a: not upper MB: upper IntlChar:upper ⅷ: hasLetterVariants: no PREG (ext): not upper PREG: not upper CTYPE: not upper < a: not upper MB: upper IntlChar:not upper Ⅷ: hasLetterVariants: no PREG (ext): not upper PREG: upper CTYPE: not upper < a: not upper MB: upper IntlChar:upper
preferences:
115.66 ms | 412 KiB | 5 Q