Detailed introduction to the difference between php return and echo

1. Using return, the output will be empty; but in the second example, if return is changed to echo, the result will be 1000; In the three examples, return

is also used, but the result is 1000. The specific reason is: echo is the output value; return is the return value but not output. If you want to have output, Use echo output again.

<?
class Human{  
private $money = 1000;  
public function showMoney(){    
return $this->money; }}
$money = new Human();
$money->showMoney();
 
?>

二、

<?
class Human{  
private $money = 1000;  
public function showMoney(){    
echo $this->money; }}
$money = new Human(); 
$money->showMoney();
?>

3.

<?
class Human{  
private $money = 1000;  
public function showMoney(){    
return $this->money; }}
$money = new Human();
echo $money->showMoney();
 
?>

The difference between echo and return:

——>echo is outputStringTo the browser, return terminates the execution of the following code and returns a value.

PHP=>PHP uses return, PHP=>browser and javascriptuse echo

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