PHP – or Keyword
The PHP or keyword is a logical operator. The return value will be true if any one of the statements returns true, otherwise it will return false.
PHP – switch Keyword
The PHP switch keyword is used to create a switch conditional, which choose a block of code to run based on the value of an expression.
PHP – xor Keyword
The PHP xor keyword is a logical operator that’s return value will only be true if one of the statements is true and the other one is false.
SQL – CASE Keyword
The CASE keyword is used is to create different output based on various conditions.
SQL – OR Keyword
The OR keyword is used with the WHERE keyword to include rows where at least one of multiple conditions are true.
SQL – MySQL IF() Function
The MySQL IF() function returns a value if a condition is TRUE, or another value if a condition is FALSE.
SQL – MySQL IFNULL() Function
The MySQL IFNULL() function returns a specified value if the expression is NULL.
