php regex finding a string between two strings

Question

I wanted to perform a regex in php. From the $str variable I want to select out common_name = Bangladesh . I wore my regex. The regex is not finding any match here. How can I fix this?

$str = "| conventional_long_name = People's Republic of Bangladesh | common_name = Bangladesh | image_flag = Flag of Bangladesh.svg";
    $pat = "/(?=\common_name\s=).*?(?=\s\|)/";

    if(preg_match($pat, $str, $matches)){
        echo "Matches found";
        echo $matches[0];
    } else {
        echo "No match found";
    }

the result shows

No match found

Answer 1

You have missed semicolon ; at the first line

Answer 2

You need to put ; at the end of $str = "...."

Answer 3

You're missing a semicolon at the end of your first line:

Change it to:

$str = "| conventional_long_name = People's Republic of Bangladesh | common_name = Bangladesh | image_flag = Flag of Bangladesh.svg";

Also, get a decent IDE and save yourself the trouble of asking this question on SO every time! :)

Answer 4

You are probably missing the semicolon on the 1st line of your code

  $str = "| conventional_long_name = People's Republic of Bangladesh | common_name = Bangladesh | image_flag = Flag of Bangladesh.svg";
        $pat = "/(?=\common_name\s=).*?(?=\s\|)/";

        if(preg_match($pat, $str, $matches)){
            echo "Matches found";
            echo $matches[0];
        } else {
            echo "No match found";
        }