Get the post meta unserialized (WordPress does this for you):
$data = get_post_meta( $post_id, 'name_of_field', true );
Use a regular expression:
if ( preg_match_all( '!https?://[^" ]+!', $data, $matches ) )
print_r( $matches[0] );
Get the post meta unserialized (WordPress does this for you):
$data = get_post_meta( $post_id, 'name_of_field', true );
Use a regular expression:
if ( preg_match_all( '!https?://[^" ]+!', $data, $matches ) )
print_r( $matches[0] );