替换为 SELECT GROUP_CONCAT 中的数组

Question

I am trying to do a str_replace without success.. for some reason the data from MySql isn't working inside the str_replace function...

Code to bring all strings which will be used to replace the string:

$aspas = "'";
$sql2 = '
SELECT
    GROUP_CONCAT(
        DISTINCT CONCAT("'.$aspas.'", prefixo, "-'.$aspas.','.$aspas.'-", posfixo, "'.$aspas.'") 
    ) AS prefixo_posfixo
FROM
    profissionais
';

$stm2 = $pdo->prepare($sql2);
$stm2->execute();
$resultado = $stm2->fetch();

Produces with no error this output:

echo $resultado[0] >> 'dr-','-advogado','dra-','-advogada'

But when I try to insert inside the str_replace function:

$newstring = str_replace([$resultado[0]], '', 'dra-flavia-barao-advogada');
echo newstring >> dra-flavia-barao-advogada

As you see, the result keep the same, it doesn't replace the string;(

I think it is something about convert the array to string, but the $resultado[0] isn't in a array format so I cant implode...

Do you know what I am doing wrong?

Answer 1

I forgot to post the solution before, There is:

//SELECT THE STRINGS TO BE USED TO REMOVE FUNCTION
$sql2 = '
SELECT
    GROUP_CONCAT(
        DISTINCT CONCAT(prefixo, "-,-",posfixo) 
    ) AS prefixo_posfixo
FROM
    profissionais
';

$stm2 = $pdo->prepare($sql2);
$stm2->execute();
$prefixo_posfixo = $stm2->fetch();

//REPLACE / REMOVE THE STRINGS
$newstring = str_replace(explode(",", $prefixo_posfixo[0]), '', 'dra-flavia-barao-advogada');

//PRODUCES THE OUTPUT
flavia-barao