Append to STDIN

Hi guys... I have a perl script which adds automatically contents to my html file. I have been done this manualy, from a unix shell, but now I want to make the PHP do-it-for-me. As I already have the perl script, I won't rewrite it again, so, how can I make a PHP variable ($foo) to go to the STDIN? In other words, I want to execute my htmladd.pl with the file argument, and get the STDIN. like echo "STDIN"| htmladd.pl my_html_file.html But I want to STDIN be a PHP variable, that is because I want to make the updates over the net. Thanks! Hey, sorry for my bad english! Take care! Cleber S. Mori Monitor Lab Linux 2o Ano - Bacharelado em Ciências da Computação ICMC - Instituto de Ciências Matemáticas e de Computação USP - Universidade de São Paulo - São Carlos HPage: http://grad.icmc.sc.usp.br/~cleber/ E-mail: cleber@grad.icmc.sc.usp.br ICQ/UIN: 1409389