Develop multitasking applications with PHP V5

Many PHP developers believe that because standard PHP lacks threading capabilities, it's impossible for a practical PHP application to multitask. For example, if an application needs information from a different Web site, it has to stall until that remote retrieval is done. Not true! Find out about in-process PHP multitasking using stream_select and stream_socket_client.

www.ibm.com/developerworks/web/library/os-php-multitask/