Solution to error reporting problem using addslashes function in PHP_PHP Tutorial

Look at the code below. Can you find the error?

Copy code The code is as follows:

echo function_exists('addcslashes');//Detection Whether this function exists
echo get_magic_quotes_gpc().'
';//Check whether automatic escaping is turned on
echo PHP_VERSION.'
';//php version information
echo addcslashes("Who's John Adams?");
echo '
';
$str = "Who's John Adams?";
echo addslashes($str);
?>

Are the output results the same?
10
5.3.6
Warning: addcslashes() expects exactly 2 parameters, 1 given in /data/bookuu/test/class.php on line 50
Who's John Adams?

One reports an error and the other outputs normally. Why?
addslashes and addcslashes are not the same function. I found that there is no difference, only one character.
But the function of both functions is the same—escape strings.
What’s the difference?
addslashes has only one parameter - string
addcslashes requires two parameters, string and delimiter.
echo addcslashes("Who's John Adams?","'"); If you write it like this, you can output it normally. .

Hope it helps everyone understand the usage of addslashes.

Error in addslashes

What a fool, let me show you a code and see if you can find the error?

Copy code The code is as follows:

echo function_exists('addcslashes');//Detect whether the function exists
echo get_magic_quotes_gpc().'
';//Check whether automatic escaping is turned on
echo PHP_VERSION.'
';//php version information
echo addcslashes("Who's John Adams?");
echo '
';
$str = "Who's John Adams?";
echo addslashes($str);

Guess whether the output results are the same? ? ? A: Same B: Still the same
I also think it’s the same, but it’s actually a lie!
10
5.3.6

Warning: addcslashes() expects exactly 2 parameters, 1 given in /data/bookuu/test/class.php on line 50

Who's John Adams?

One reports an error and the other outputs normally.

Why?
addslashes and addcslashes are not the same function. I found that there is no difference, only one character.

But the function of both functions is the same—escape strings.
What’s the difference?
addslashes has only one parameter - string
addcslashes requires two parameters, string and delimiter.
echo addcslashes("Who's John Adams?","'"); If you write it like this, you can output it normally. .

http://www.bkjia.com/PHPjc/326448.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/326448.htmlTechArticleLook at the code below, can you find the error? Copy the code The code is as follows: ?php echo function_exists('addcslashes');//Check whether the function exists echo get_magic_quotes_gp...