php - send representation of byte containing custom high-order nibble and dynamic low nibble -


i'm facing following problem :

i need send byte server.

this byte should contain following :

  • high order nibble 1011
  • low order nibble containing number representation between 1 , 15, here let's take 2 e.g.

so full byte should 10110010.

there corresponding thread reading byte in 2 distinct nibbles, not building it.

the goal have achieve first, build byte depending on size value, here 2, , send socket server receive byte 10110010 (hence b2 in hex)

i have read lot of examples couldn't find 1 narrow situation.

so how can build byte , convert in format socket binary stream.

thanks,


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