Binary Slices

Binary data is represented as a string in PHP. The most common source of this data is from the pack and unpack functions. It allows you to use a PHP string as a read-only slice in Rust.

T parameter&T parameterT Return type&T Return typePHP representation

The binary type is represented as a string in PHP. Although not encoded, the data is converted into a slice and then the pointer to the data is set as the string pointer, with the length of the array being the length of the string.

BinarySlice<T> is valid when T implements PackSlice. This is currently implemented on most primitive numbers (i8, i16, i32, i64, u8, u16, u32, u64, isize, usize, f32, f64).

Rust Usage

#![cfg_attr(windows, feature(abi_vectorcall))]
extern crate ext_php_rs;
use ext_php_rs::prelude::*;
use ext_php_rs::binary_slice::BinarySlice;

pub fn test_binary_slice(input: BinarySlice<u8>) -> u8 {
    let mut sum = 0;
    for i in input.iter() {
        sum += i;

fn main() {}

PHP Usage


$data = pack('C*', 1, 2, 3, 4, 5);
$output = test_binary_slice($data);
var_dump($output); // 15