php man page for addcslashes

ADDCSLASHES(3)								 1							    ADDCSLASHES(3)

addcslashes - Quote string with slashes in a C style

SYNOPSIS
       string addcslashes (string  $str, string  $charlist)

DESCRIPTION
	Returns a string with backslashes before characters that are listed in $charlist parameter.

PARAMETERS
	      o $str
		- The string to be escaped.

	      o $charlist
		-  A  list  of	characters  to be escaped. If $charlist contains characters 
, 
 etc., they are converted in C-like style, while
		other non-alphanumeric characters with ASCII codes lower than 32 and higher than 126 converted to octal representation.  When  you
		define	a sequence of characters in the charlist argument make sure that you know what characters come between the characters that
		you set as the start and end of the range.

	      <?php
	      echo addcslashes('foo[ ]', 'A..z');
	      // output:  foo[ ]
	      // All upper and lower-case letters will be escaped
	      // ... but so will the []^_`
	      ?>

	      <?php
	      echo addcslashes("zoo['.']", 'z..A');
	      // output:  zoo['.']
	      ?>

RETURN VALUES
	Returns the escaped string.

CHANGELOG
       +--------+---------------------------------------------+
       |Version |					      |
       |	|					      |
       |	|		  Description		      |
       |	|					      |
       +--------+---------------------------------------------+
       | 5.2.5	|					      |
       |	|					      |
       |	|  The escape sequences v and f were added. |
       |	|					      |
       +--------+---------------------------------------------+
EXAMPLES
       $charlist like "..37", which would escape all characters with ASCII code between 0 and 31.

       Example #1

	      addcslashes(3) example

	      <?php
	      $escaped = addcslashes($not_escaped, "..37!@177..377");
	      ?>

SEE ALSO
       stripcslashes(3), stripslashes(3), addslashes(3), htmlspecialchars(3), quotemeta(3).

PHP Documentation Group 													    ADDCSLASHES(3)