echo function

echo is not actually a function (it is a language construct), so you are not required to use parentheses with it. echo (unlike some other language constructs) does not behave like a function, so it cannot always be used in the context of a function. Additionally, if you want to pass more than one parameter to echo, the parameters must not be enclosed within parentheses.

echo also has a shortcut syntax, where you can immediately follow the opening tag with an equals sign. This short syntax only works with the short_open_tag configuration setting enabled.

Example #1 echo examples

<?phpecho "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$baz = array("value" => "foo");

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

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

// If you are not using any other characters, you can just echo variablesecho $foo; // foobarecho $foo,$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 <<<ENDThis 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?>