continue causes the loop to skip the remainder of its body and immediately retest its condition prior to reiterating.
_CLASS_ − The class name. (Added in PHP 4.3.0) As of PHP 5 this constant returns the class name as it was declared (case-sensitive). In PHP 4 its value is always lowercased.
_METHOD_ − The class method name. (Added in PHP 5.0.0) The method name is returned as it was declared (case-sensitive).
Yes! You can set a parameter to have a default value if the function's caller doesn't pass it.
Associative array − An array with strings as index. This stores element values in association with key values rather than in a strict linear index order.
PHP provides a large number of predefined constants to any script which it runs known as magic constants.
array() − Creates an array.
Whitespace is the stuff you type that is typically invisible on the screen, including spaces, tabs, and carriage returns (end-of-line characters). PHP whitespace insensitive means that it almost never matters how many whitespace characters you have in a row.one whitespace character is the same as many such characters.
The PHP $_REQUEST variable contains the contents of both $_GET, $_POST, and $_COOKIE. We will discuss $_COOKIE variable when we will explain about cookies. The PHP $_REQUEST variable can be used to get the result from form data sent with both the GET and POST methods.