Search function on multiple rows in the same table

I’m wondering how do I add more row’s on my search script to be searched.

Here’s my php script:

<?php

$con = new PDO("mysql:host=localhost;dbname=db",'user','');

if (isset($_POST["submit"])) {
    $str = $_POST["search"];
    $sth = $con->prepare("
SELECT * 
  FROM `players` 
 WHERE region = '$str'
");

    $sth->setFetchMode(PDO:: FETCH_OBJ);
    $sth -> execute();

    if($row = $sth->fetch())
    {
        ?>

As you can see this:

SELECT * FROM `players` WHERE region = '$str'

I want to it to search on region and rank rows. I tried:

SELECT * FROM `players` WHERE region, rank = '$str' 

…. it’s showing 0 results.

Thank you in advance.

Answer

Is this what you want?

SELECT * FROM players WHERE ? IN (region, `rank`)

This searches for the parameter in both columns region and rank.

Side notes:

• For this to properly and consistently work, both columns must be of the same datatype

• Use prepared statements! Do not concatenate variables in the query string; this is inefficient, and opens up your code to SQL injection. See How can I prevent SQL injection in PHP?

• Starting version 8.0.2, rank is a reserved word in MySQL, hence not a good choice for a column name