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_make_url_clickable_cb is private and should not be used in themes or plugins directly.
_make_url_clickable_cb › WordPress Function
Since2.3.2
Deprecatedn/a
› _make_url_clickable_cb ( $matches )
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Callback to convert URI match to HTML A element.
This function was backported from 2.5.0 to 2.3.2. Regex callback for make_clickable().Related Functions: _make_email_clickable_cb, _make_web_ftp_clickable_cb, make_clickable, get_user_locale, make_url_footnote
Source
function _make_url_clickable_cb( $matches ) { $url = $matches[2]; if ( ')' === $matches[3] && strpos( $url, '(' ) ) { // If the trailing character is a closing parethesis, and the URL has an opening parenthesis in it, // add the closing parenthesis to the URL. Then we can let the parenthesis balancer do its thing below. $url .= $matches[3]; $suffix = ''; } else { $suffix = $matches[3]; } // Include parentheses in the URL only if paired. while ( substr_count( $url, '(' ) < substr_count( $url, ')' ) ) { $suffix = strrchr( $url, ')' ) . $suffix; $url = substr( $url, 0, strrpos( $url, ')' ) ); } $url = esc_url( $url ); if ( empty( $url ) ) { return $matches[0]; } if ( 'comment_text' === current_filter() ) { $rel = 'nofollow ugc'; } else { $rel = 'nofollow'; } /** * Filters the rel value that is added to URL matches converted to links. * * @since 5.3.0 * * @param string $rel The rel value. * @param string $url The matched URL being converted to a link tag. */ $rel = apply_filters( 'make_clickable_rel', $rel, $url ); $rel = esc_attr( $rel ); return $matches[1] . "<a href=\"$url\" rel=\"$rel\">$url</a>" . $suffix; }