Tutorials References Exercises Bootcamps Videos Menu
Sign Up Create Website Get Certified Upgrade

PHP Tutorial

PHP HOME PHP Intro PHP Install PHP Syntax PHP Comments PHP Variables PHP Echo / Print PHP Data Types PHP Strings PHP Numbers PHP Math PHP Constants PHP Operators PHP If...Else...Elseif PHP Switch PHP Loops PHP Functions PHP Arrays PHP Superglobals PHP RegEx

PHP Forms

PHP Form Handling PHP Form Validation PHP Form Required PHP Form URL/E-mail PHP Form Complete

PHP Advanced

PHP Date and Time PHP Include PHP File Handling PHP File Open/Read PHP File Create/Write PHP File Upload PHP Cookies PHP Sessions PHP Filters PHP Filters Advanced PHP Callback Functions PHP JSON PHP Exceptions


PHP What is OOP PHP Classes/Objects PHP Constructor PHP Destructor PHP Access Modifiers PHP Inheritance PHP Constants PHP Abstract Classes PHP Interfaces PHP Traits PHP Static Methods PHP Static Properties PHP Namespaces PHP Iterables

MySQL Database

MySQL Database MySQL Connect MySQL Create DB MySQL Create Table MySQL Insert Data MySQL Get Last ID MySQL Insert Multiple MySQL Prepared MySQL Select Data MySQL Where MySQL Order By MySQL Delete Data MySQL Update Data MySQL Limit Data


PHP XML Parsers PHP SimpleXML Parser PHP SimpleXML - Get PHP XML Expat PHP XML DOM



PHP Examples

PHP Examples PHP Compiler PHP Quiz PHP Exercises PHP Certificate

PHP Reference

PHP Overview PHP Array PHP Calendar PHP Date PHP Directory PHP Error PHP Exception PHP Filesystem PHP Filter PHP FTP PHP JSON PHP Keywords PHP Libxml PHP Mail PHP Math PHP Misc PHP MySQLi PHP Network PHP Output Control PHP RegEx PHP SimpleXML PHP Stream PHP String PHP Variable Handling PHP XML Parser PHP Zip PHP Timezones

PHP addslashes() Function

❮ PHP String Reference


Add a backslash in front of each double quote ("):

$str = addslashes('What does "yolo" mean?');
Try it Yourself »

Definition and Usage

The addslashes() function returns a string with backslashes in front of predefined characters.

The predefined characters are:

  • single quote (')
  • double quote (")
  • backslash (\)
  • NULL

Tip: This function can be used to prepare a string for storage in a database and database queries.

Note: Prior to PHP 5.4, the PHP dir magic_quotes_gpc was on by default and it ran addslashes() on all GET, POST, and COOKIE data by default. You should not use addslashes() on strings that have already been escaped, as it will cause double escaping. The function get_magic_quotes_gpc() can be used to check this.



Parameter Values

Parameter Description
string Required. Specifies the string to be escaped

Technical Details

Return Value: Returns the escaped string
PHP Version: 4+
PHP Changelog: Prior to PHP 5.4, the PHP dir magic_quotes_gpc was on by default and it ran addslashes() on all GET, POST, and COOKIE data by default.

More Examples


Add backslashes to the predefined characters in a string:

$str = "Who's Peter Griffin?";
echo $str . " This is not safe in a database query.<br>";
echo addslashes($str) . " This is safe in a database query.";
Try it Yourself »

❮ PHP String Reference