Why is there an error in the prepared expression?

Question

PHP

if i do that

$string = "'%бла-бла%', '%бла-бла%', '%бла-бла%'";    
$rs->execute(array($string));

Then an error occurs

PDOException: SQLSTATE[HY093]: Invalid parameter number: number of bound variables does not match number of tokens

If I stupidly substitute the same thing in the expression

$rs->execute(array('%бла-бла%', '%бла-бла%', '%бла-бла%'));

That is no error.
What's wrong?

Answer 1

So you substitute the string where the array should be. Then it should be like this:
$rs->execute(explode(', ', $string));