PHP Manual . Prev . Next . PHP 3 <= 3.0.18, PHP 4 >= 4.0.0) chr -- Return a specific character . 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); . ... See also sprintf() with a format string of %c . ...