function addslashes () to prevent SQL injection

1 <? PHP 2 $str addslashes (' Shanghai is the ' biggest ' ); 3 Echo ($str); 4 ?>

Definition and usage

The Addslashes () function returns a string that adds a backslash before a predefined character.

The predefined characters are:

• Single quotation mark (')
• Double quotation marks (")
• Back slash (\)
• Null

Tip: This function can be used to prepare strings for strings stored in the database as well as database query statements.

function addslashes () to prevent SQL injection