[−][src]Function phpify::string::strpos

pub fn strpos<H, N>(haystack: H, needle: N, offset: isize) -> Option<usize> where
    H: AsRef<str>,
    N: AsRef<str>,

Find the position of the first occurrence of a substring in a string.

Description

Find the numeric position of the first occurrence of needle in the haystack string.

offset

If the offset is negative, the search will start this number of characters counted from the end of the string.

Example #1 strpos() example

use phpify::string::strpos;

let mystring = "abc";
let findme = "a";
let pos = strpos(mystring, findme, 0).unwrap();

assert_eq!(pos, 0);

Example #2 using an offset

use phpify::string::strpos;

let newstring = "abcdef abcdef";
let pos = strpos(newstring, "a", 1).unwrap();

assert_eq!(pos, 7);