SQL文の書き方

SQL文の書き方を教えてください。
$sql1 はユーザー入力の選択値に基づいて動的に生成されます:


$ConditionsNumber=6;
", "$condition4 ", "$condition5 ", "$condition6 " ) ; '$condition3 ' ", " where user= '$condition4 ' ", " where Bankid= '$condition5 ' ", " where equimode= '$condition6 ' "); $i $SearchSQLArray[$i]= " ";
for ($ j = 0; $ j { $ whenposity = Strpos ($ Searchsqlarray [$ j], "WHERE"）; WHERE POSITION == "1"）&&（$ have == false）