echo -- Output one or more strings


echo (string arg1, string [argn]...)

Outputs all parameters.

Echo() is not actually a function (it is a language construct) so you are not required to use parentheses with it. In fact, if you want to pass more than one parameter to echo, you must not enclose the parameters within parentheses.

Example 1. Echo() examples

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

// 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

// because echo is not a function, following code is invalid. 
($some_var) ? echo('true'): echo('false');

// However, the following examples will work:
($some_var) ? print('true'): print('false'); // print is a function
echo ($some_var) ? 'true': 'false'; // changing the statement around

Echo() also has a shortcut syntax, where you can immediately follow the opening tag with an equals sign.

I have <?=$foo?> foo.

See also: print(), printf(), and flush().