The client index seems to be in arg1 and is converted from string to int...
If I understand well you just need to rip out the TE_ part and make it use function args
PHP Code:
stock sendPlayerAnimToAll(client, event, data)
{
TE_Start("PlayerAnimEvent");
TE_WriteNum("m_hPlayer", client);
TE_WriteNum("m_iEvent", event);
TE_WriteNum("m_nData", data);
TE_SendToAll();
}