UPGRADING for Unicode Codepoint Escape Syntax
More UPGRADING, NEWS
Improved chr() function. Use FAST_ZPP, use interned strings.
Improved array_diff() function (use simple and more efficient algorithm).
Improves strtotime() function.
C89 compat
fixed tests
Simplify condition
don't sort array with single element
Enabled JIT for preg_split(). Use better zend_hash_*() functions.
Improved setlocale(). Eliminated locale comparison in ext/pcre if it's not necessary.
Avoid NULL pointer dereferencing
Merge branch 'master' of git://github.com/php/php-src