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The addcslashes() function returns a string with backslashes in front of the specified characters.

Syntax

addcslashes(string,characters)

Parameter
string is a required. Specifies the string to check
characters is a required. Specifies the characters or range of characters to be affected by addcslashes()

Note: Be careful using addcslashes() on 0, r, n and t. In PHP, \0, \r, \n and \t are predefined escape sequences.

Problem

We will add backslashes to certain characters in a string: add php openinh tag and closing tag to following code,

$str = "Hello, my name is Khabza.";
 echo $str."<br \>";
 echo addcslashes($str,'m')."<br \>";
 echo addcslashes($str,'K')."<br \>";

Solution

Hello, my name iskhabza.
Hello, \my na\me is Kabza.
Hello, my name is \Kabza.

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