What is the purpose of the addslashes() function in PHP and how does it differ from stripslashes()?

The addslashes() function in PHP is used to escape special characters in a string, making it safe to insert into a database to prevent SQL injection attacks. On the other hand, stripslashes() is used to remove slashes added by the addslashes() function or any other escaping mechanism. 

// Example of using addslashes() to escape special characters before inserting into a database
$name = "John O'Connor";
$escaped_name = addslashes($name);
// $escaped_name now contains "John O\'Connor"

// Example of using stripslashes() to remove slashes added by addslashes()
$original_name = stripslashes($escaped_name);
// $original_name now contains "John O'Connor"

Keywords

addslashes stripslashes PHP function difference

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