The PHP echo function is used to output one or more strings. As echo is not a real function, you are not required to use parenthesis with it (If you have only one parameter).
If you have more than one parameters, you should not specify them in a parenthesis. This function doesn’t append a newline to the end of a string.
Syntax
echo(data to output);
Simple echo function
<?php
$data = "This is PHP echo function.";
echo $data;
echo "\n Hello";
?>Output
This is PHP echo function.
Multi-line text using echo
<pre>
<?php
$data = "This is PHP
echo function
with multiple-lines";
echo $data;
?>
</pre>Output
This is PHP
echo function with multiple-lines
echo() with multiple parameter
<?php
echo 'Hello',' world';
?>Output
Hello world
Difference between using single quotes and double quotes
If you specify a variable inside single quotes, the name of the variable will be displayed. To display the value of a variable, use double quotes.
Example
<pre>
<?php
$a="\nhello"; // \n creates a new line
echo '$a';
echo "$a";
echo $a;
?>
</pre>Output
$a hello hello
Learn more about other PHP string handling functions.
