ctype_upper
(PHP 4 >= 4.0.4, PHP 5)
ctype_upper -- Check for uppercase character(s)
Description
bool
ctype_upper ( string text)
Returns TRUE if every character in text is
an uppercase letter in the current locale.
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";
}
}
?>
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This example will output :
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. |
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See also ctype_alpha(), ctype_lower(),
and setlocale().