Variable functionsPHP ManualPrevNextLIII. Variable functionsTable of Contentsdoubleval — Get double value of a variable.empty — determine whether a variable is setgettype — Get the type of a variable.intval — Get integer value of a variable.is_array — Finds whether a variable is an array.is_double — Finds whether a variable is a double.is_float — Finds whether a variable is a float.is_int — Find whether a variable is an integer.is_integer — Find whether a variable is an integer.is_long — Finds whether a variable is an integer.is_object — Finds whether a variable is an object.is_real — Finds whether a variable is a real.is_string — Finds whether a variable is a string.isset — determine whether a variable is setprint_r — Prints human-readable information about a variable. settype — Set the type of a variable.strval — Get string value of a variable.unset — Unset a given variablevar_dump — Dumps information about a variable. PrevHomeNexturlencodeUpdoubleval