Using preg_match() with different delimiters.

A match was found using paired '/' as delimiter.

"; if (preg_match(".Hel.", "Hello world!")) echo "

A match was found using paired '.' as delimiter.

"; if (preg_match("{Hel}", "Hello world!")) echo "

A match was found using matched '{' and '}' as delimiters.

"; if (preg_match("(Hel)", "Hello world!")) echo "

A match was found using matched '(' and ')' as delimiters.

"; if (preg_match("", "Hello world!")) echo "

A match was found using matched '<' and '>' as delimiters.

"; ?>