On Thu, 4 Jul 2002, SP wrote:
> Hi I am trying to check if a word contains only capital letters. For
> some reason it's not working. The below example is checking the word
> "weird" to see if it's all capital letters but it's saying it's matches.
> I've tried checking for only lower case letters with "WEIRD" and it's
> not working there too. What am I doing wrong?
>
>
> $pattern = "A-Z";
> $regexp = '/^['.$pattern.']*$/i';
> if( preg_match($regexp, "weird") )
> echo "matches";
> else
> echo "does not match";
Easiest approach:
if ($str != strtoupper($str))
echo 'String contains lower-case letters.';
Using preg:
if (preg_match('/[a-z]/', $str))
echo 'String contains lower-case letters.';
If you don't want any other characters to appear, ONLY capital letters
(your question was a little ambiguous to me):
if (preg_match('/[^A-Z]/', $str))
echo 'String contains something other than capital letters.';
miguel
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