Check for uppercase character(s) with ctype_upper in PHP
Description
The following code shows how to check for uppercase character(s) with ctype_upper.
Example
//w w w . j av a2s. c o m
<?php
$strings = array('qweqwe139', 'AAAAA', '123123');
foreach ($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 code above generates the following result.
