syntax error, unexpected T_STRING, expecting ',' or ';'”

Question

echo '<a href="'. $site_url .'" onclick=" window.open('. $refferal_url .'); ">';

results

<a href="http://example.com/" onclick=" window.open(http://example.com/some-url/); ">

The problem is i can't get to put single quote before and after http://example.com/some-url/

because i always get the error.

How can i do this?

Answer 1

You have to escape the single quotes because they are in a single-quoted string. Add \' where you want the single quotes.

Example:

echo '<a href="'. $site_url .'" onclick=" window.open(\''. $refferal_url .'\'); ">';

By the way, "referral" has two rs, not two fs.