(PHP 3, PHP 4 >= 4.0.0)
chr -- Return a specific character
Description
string 
chr ( int ascii)
     Returns a one-character string containing the character specified
     by ascii.
     
| Example 1. chr() example | $str .= chr(27); /* add an escape character at the end of $str */
/* Often this is more useful */
$str = sprintf("The string ends in escape: %c", 27); | 
 | 
    
     You can find an ASCII-table over here: http://www.mindspring.com/~jc1/serial/Resources/ASCII.html.
    
     This function complements ord(). See also
     sprintf() with a format string of
     %c.