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<?php function chk($word) { echo PHP_EOL . 'Word: ' . $word . ' - '; if (preg_match('/^[0-9]+$/u', $word)) { echo 'Ok.' . PHP_EOL; } else { echo 'Ng.' . PHP_EOL; }; } chk('abc12345'); chk('ａｂｃ１２３４５'); chk('12345abc'); chk('１２３４５ａｂｃ'); chk('12345'); chk('１２３４５'); chk('1１2２3３4４5５'); chk('12.345');
Output for git.master, git.master_jit, rfc.property-hooks
Word: abc12345 - Ng. Word: ａｂｃ１２３４５ - Ng. Word: 12345abc - Ng. Word: １２３４５ａｂｃ - Ng. Word: 12345 - Ok. Word: １２３４５ - Ng. Word: 1１2２3３4４5５ - Ng. Word: 12.345 - Ng.

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