<?php
echo "Hello World" ;

echo "This spans
multiple lines. The newlines will be
output as well" ;

echo "This spans\nmultiple lines. The newlines will be\noutput as well." ;

echo "Escaping characters is done \"Like this\"." ;

// You can use variables inside of an echo statement
$foo = "foobar" ;
$bar = "barbaz" ;

echo "foo is $foo" ; // foo is foobar

// You can also use arrays
$bar = array( "value" => "foo" );

echo "this is {$bar['value']} !" ; // this is foo !

// Using single quotes will print the variable name, not the value
echo 'foo is $foo' ; // foo is $foo

// If you are not using any other characters, you can just echo variables
echo $foo ;      // foobar
echo $foo , $bar ;   // foobarbarbaz

// Some people prefer passing multiple parameters to echo over concatenation.
echo 'This ' , 'string ' , 'was ' , 'made ' , 'with multiple parameters.' , chr ( 10 );
echo 'This ' . 'string ' . 'was ' . 'made ' . 'with concatenation.' . "\n" ;

echo <<<END
This uses the "here document" syntax to output
multiple lines with $variable interpolation. Note
that the here document terminator must appear on a
line with just a semicolon. no extra whitespace!
END;
// Because echo does not behave like a function, the following code is invalid.
( $some_var ) ? echo 'true' : echo 'false' ;

// However, the following examples will work:
( $some_var ) ? print 'true' : print 'false' ; // print is also a construct, but
                      // it behaves like a function, so
                      // it may be used in this context.
echo $some_var ? 'true' : 'false' ; // changing the statement around
?>