#EXTM3U#EXT-X-VERSION3#EXT-X-STREAM-INFPROGRAM-ID=1BANDWIDTH=2560000httpe80974de465143f29168a648f46fe38dlivehwc3cnhwhlshuyacomsrc1394575534-1394575534-5989656310331736064-2789274524-10057-A-0-1m3u8sub

The given text appears to be an M3U8 playlist file, which is used for streaming multimedia content. It contains metadata and URLs for different video streams at various bitrates.

The URL mentioned at the end seems to be a part of the playlist, and it is not related to PHP or regular expressions. It is a valid URL that can be used to access a specific video stream.