Writing Statements and Comments
As you can see from the previous example, a PHP script consists of one or more
statements, with each statement ending in a semicolon. Blank lines within the
script are ignored by the parser. Everything outside the tags is also ignored by the
parser, and returned as is; only the code between the tags is read and executed.
If you’re in a hurry, you can omit the semicolon on the last line of a PHP
block, because the closing ?> includes an implicit semicolon. Therefore,
the line is<?php echo 'Hello' ?> perfectly valid PHP code.
This is the only time a PHP statement not ending in a semicolon is still
For greater readability, you should add comments to your PHP code, as I did in
the previous example. To do this, simply use one of the Comments styles listed here:
// this is a single-line comment
# so is this
/* and this is a