substr() higher case check

[jackvull]

is substr() case sensitive?

I am trying to look for occurrences of the letters EP in a string by themselves. However, it is picking up letters ep in other words like "keep", etc. Or could that just be because I am running it on Windows, which seems to be case insensitive.

Any other ideas on how to check just for the letters EP by themselves?

[eeek]

is substr() case sensitive?

How could it be? substr() only applies numeric arguments to the string and returns specified part of the subject string unchanged.

[eeek]

Any other ideas on how to check just for the letters EP by themselves?

Perl compatable regular expression matching will do it.

[jatar_k]

[php.net...]

[eeek]

He could use strpos (or stripos) to find the letters. But if he wants them as a word, pcre would be a lot easier.