Release Timeline
July, 2002 PHP 4.2.2
Sept, 2002 PHP 4.2.3
Dec, 2003 PHP 4.3.0
Feb, 2003 PHP 4.3.1
May, 2003 PHP 4.3.2
July, 2003 PHP 4.3.3
July, 2003 PHP 5.0 Beta 1
??? PHP 4.4
Before Perl 6 PHP 5.0