Source of: /manual/en/control-structures.intro.php
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<div id="control-structures.intro" class="sect1">
<h2 class="title">Introduction</h2>
<p class="simpara">
Any PHP script is built out of a series of statements. A statement
can be an assignment, a function call, a loop, a conditional
statement or even a statement that does nothing (an empty
statement). Statements usually end with a semicolon. In addition,
statements can be grouped into a statement-group by encapsulating a
group of statements with curly braces. A statement-group is a
statement by itself as well. The various statement types are
described in this chapter.
</p>
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