PHP - fread（）函数

Question

I have simple file ...i got the code from w3schools

When i tried to execute the code

fread() function doesn't return anything

first.php

<?php
error_reporting(E_ALL);
ini_set('display_errors', 1);

$file = fopen("test.php","r");
fread($file,filesize("test.php"));

?>

test.php

<?php 
echo "Hello world"; 
?>

when i open localhost/first.php

the result is blank page

Answer 1

You never capture what you read to display it on the page. Do

$contents = fread(...);
if($contents===false):
    //there was an error
else:
    echo $contents;
endif;