Finding matches in multiple columns of mysql with an array set of data in PHP

You'll need a query like this:

$instring = implode("','", $array);
$sql = "SELECT `xy` FROM `z` WHERE (`columnA` IN ('".$instring."')
OR `columnB` IN ('".$instring."')
OR `columnC` IN ('".$instring."'))";

I think this is what you want. I couldn't tell if you wanted to check every column for every value in your array.

SELECT * FROM tableName
WHERE columnA = $phpArray[0] OR
columnA = $phpArray[0] OR
columnB = $phpArray[0] OR
columnC = $phpArray[0] OR
columnA = $phpArray[1] OR
columnB = $phpArray[1] OR
columnC = $phpArray[1] OR
columnA = $phpArray[2] OR
columnB = $phpArray[2] OR
columnC = $phpArray[2] OR 
... 
columnC = $phpArray[n];

You can use PHP to create this statement in a loop

$sql = "SELECT * FROM tableName WHERE ";
for($i=0;$i<count(phpArray)-1;$i++){
   $sql .= "columnA = "+"'"+$phpArray[$i]+"'"+ OR "
   $sql .= "columnB = +"'"+$phpArray[$i]+"'"+ OR "
   $sql .= "columnC = +"'"+$phpArray[$i]+"'"+ OR "
}
$sql .= "columnA = +"'"+$phpArray[$i]+"'"+ OR "
$sql .= "columnB = +"'"+$phpArray[$i]+"'"+ OR "
$sql .= "columnC = +"'"+$phpArray[$i]+"'"+;"
*send sql query

edit: Fixed errors in code