(PHP 4, PHP 5, PHP 7)
wddx_packet_start — Starts a new WDDX packet with structure inside it
该函数已在 PHP 7.4.0 中 移除。
Start a new WDDX packet for incremental addition of variables. It automatically creates a structure definition inside the packet to contain the variables.
commentAn optional comment string.
Returns a packet ID for use in later functions, or false on error.