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PHP addslashes() Function

❮ PHP String Reference

Example

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

<?php
$str = addslashes('What does "yolo" mean?');
echo($str);
?>
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.


Syntax

addslashes(string)

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

Example

Add backslashes to the predefined characters in a string:

<?php
$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