${(P)…}: Parameter name indirection

${(P)name} interprets the value of name as further parameter name and then evaluates it.

Links

• Zsh manual on parameter expansion flags

Examples

Using parameter name indirection

1 2 3 4 5 6

declare -A data=([key]=value [key2]=value2) name=data # Prints array 'data' echo ${(P)name} # Prints value of `key2` or array `data` echo ${${(P)name}[key2]}

Output:

1 2	value2 value value2