Page 37 - Open Soource Technologies 304.indd

Unit 2: Language Basics

Notes

Create a PHP program using special characters in PHP.

Self Assessment

Choose the correct answer:
1. PHP is a ................. scripting language.
(a) client-side (b) server-side
(c) both (a) and (b) (d) none of these
2. In PHP the names of user-defined classes and functions as well as built-in constructs and
keywords are case-insensitive.
(a) True (b) False
3. In PHP ................. is used to separate tokens in PHP source file.
(a) variables (b) semicolon
(c) white space (d) operators
4. A ................. is used to mark the end of a statement in PHP.
(a) variables (b) semicolon
(c) white space (d) operators
5. Which one is not a data type?
(a) String (b) Boolean
(c) Objects (d) Public

2.2.5 Here Documents

The heredoc string structure is a method of including larger strings inside your code. You can use
it to include content of any length. To create a heredoc, you use a special operator that is made
up of three left brackets (<<< ). The syntax is as follows:
$longString = <<< termination_marker
any amount of content

termination_marker;
For instance:
$longFellowNot = <<< End_of_verse

This short poem
May not fill a tome,
But it serves to show

How it is that heredoc goes.
End_of_verse;
Anything between the termination markers is preserved, included all white space, quote marks,
and special characters. The last carriage return before the closing termination marker is omitted,
so if you want one, you should leave a blank line after the end of the content and before the
termination marker.

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