(PHP 4 >= 4.0.4, PHP 5, PHP 7)
ctype_upper — ����д��ĸ���
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Example #1 һ�� ctype_upper() ���� ��ʹ�õ�ǰĬ�����Ի�����
<?php
$strings = array('AKLWC139', 'LMNSDO', 'akwSKWsm');
foreach ($strings as $testcase) {
if (ctype_upper($testcase)) {
echo "The string $testcase consists of all uppercase letters.\n";
} else {
echo "The string $testcase does not consist of all uppercase letters.\n";
}
}
?>
�������̻������
The string AKLWC139 does not consist of all uppercase letters. The string LMNSDO consists of all uppercase letters. The string akwSKWsm does not consist of all uppercase letters.
Note:
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