<?php
$site = "http://www.w3school.com.cn/";
fopen($site,"r")
or 
die("Unable to connect to $site")
;
?>

<?php 
	echo false or die('fuck to you!'); 輸出 fuck to you !
 ?>

<?php 
	echo true or die('fuck to you!'); 輸出 1 ;
 ?>

<?php 
	echo false or die('fuck to you!'); 
    echo 'contineu';

    輸出 fuck to you !
 ?>
<?php 
	echo 1 or die('fuck to you!');
	echo 'fuck '
	//輸出 1fuck
 ?>