Variable Values

The value of a variable is an array of zero or more values. A reference to a variable will normally print its 0th (first) value, if any. Inside a LOOP or SQL statement, however, only the current value is used. This simplifies iterating a list of values, such as when creating checkboxes for a form (see here for details).

Variables can be assigned values in many ways, such as with an assignment statement (here); as the result rows of a SQL statement (here); or as the return value of builtin/user functions (e.g. $ret).