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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

例子 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()


add a note add a note User Contributed Notes
14-Jul-2005 07:22
pitty, there is no function to do the same with numbers and spaces

I offer this function

isSpaceAndNumeric( $testStr )
{
 return ereg_match( $testStr, "/^"."\A[\d\s]++"."/i" );
}

explanation:

this function start scanning from string begining, then mathes all digit and space characters from 1 to any number of occurence times.
add a note add a note


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