Use echo!

echo() function outputs one or more strings.

can output the value of the string variable ($str):

$str = "hello world";
echo $str;

echo() function is slightly faster than print().
Concatenate two string variables:

$str1 ="hello";
$str2 = "world";
echo $str1." ".$str2;

Write an array value to the output:

$arr = array("bill"=>"35");

echo "bill is ".$arr['bill']." years old.";

How to use multiple parameters:

echo 'This ','string ','was ','made ','with multiple parameters.';

The difference between single quotes and double quotes. Single quotes will output the variable name instead of the value:

$color = "red";
echo "Roses are $color";
echo "<br>";
echo 'Roses are $color';

For other applications, please refer to: http://www.w3school.com.cn/php/func_string_echo.asp;

The above introduces the use of echo! , including relevant content, I hope it will be helpful to friends who are interested in PHP tutorials.