PHP5中文手册·Check for uppercase character(s) -- 追寻梦想＞编程乐园＞PHP 编程

说明

bool ctype_upper ( string $text )

Checks if all of the characters in the provided string, text , are uppercase characters.

参数

text: The tested string.

返回值

Returns TRUE if every character in text is an uppercase letter in the current locale.

范例

Example#1 A ctype_upper() example (using the default locale)


<?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";
    }
}
?>

上例将输出：

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.


	PHP5中文手册 ctype_space ctype_xdigit ctype PHP Manual ctype_upper (PHP 4 >= 4.0.4, PHP 5) ctype_upper — Check for uppercase character(s) 说明 bool ctype_upper ( string `$text` ) Checks if all of the characters in the provided string, `text` , are uppercase characters. 参数 `text` The tested string. 返回值 Returns `TRUE` if every character in `text` is an uppercase letter in the current locale. 范例 Example#1 A ctype_upper() example (using the default locale) `<?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"; } } ?>` 上例将输出： 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. 参见 ctype_alpha() ctype_lower() setlocale() ctype_space ctype_xdigit ctype PHP Manual

ctype_upper

说明

参数

返回值

范例

参见