Related questions about die

The question about die
echo ' Fuck ';
$db =mysql_connect (' localhost ', ' bp6am ', ' 123 ')
Or Die (' Unable to connect. ');
?>
This is my code.
Without echo, the entire Web page is HTTP error Internal Server error, and what does this die do here?
Why does the Web page display fuck after echo and does not display an error message?

------Solution--------------------
PHP does not open the error display function.
In php.ini
error_reporting = E_all & ~e_notice
Display_errors = On
------Solution--------------------
First guess if there is no echo, then the entire page is HTTP error (Internal Server error),
Personally think you should be not configured with a good Web server, check your Apache IIS configuration to resolve such issues

In said Die (), is the string information output before the launch script, of course, if $db=mysql_connect (' localhost ', ' bp6am ', ' 123 ')
Or Die (' Unable to connect. ');
If the password is incorrect, the error message of the Mysql--query function is output, and the string information after the die is output. If it does not show.

[Email protected]_connect (' localhost ', ' bp6am ', ' 123 ')
Or Die (' Unable to connect. '); If the password is wrong, it will only output unable to connect.

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