5 August 2003
PHP was originally designed as a wrapper around Perl by Rasmus Lerdorf in 1994 to display his resume information, and collect some data, such as how many hits it was generating.
Don't know when the wikipedia entry changed but today it says:
16 August 2019
PHP development began in 1994 when Rasmus Lerdorf wrote several Common Gateway Interface (CGI) programs in C, which he used to maintain his personal homepage.