php用正则表达式查找字符串

Question

I've read multiple tutorials on regex but it just won't stick in my head. I can never get my patterns to work. Hope someone can help.

- starting with "[gallery::"
- any other character (variable length)
- ending with "]"

Answer 1

Try capturing it:

preg_match("/\[gallery::(.*?)]/",$content,$m);

Now $m is an array:

0 => [gallery::/name/of/the/folder/]
1 => /name/of/the/folder/

Answer 2

change your regex to

'/\[gallery::([A-Za-z\/]+)\]/'

Since I put the folder/path part in parenthesis, you should get a capture group out of it.

Answer 3

if (preg_match("/\bweb\b/i", "PHP is the web scripting language of choice.")) {
    echo "A match was found.";
} else {
    echo "A match was not found.";
}