Find the position of the last occurrence of a substring in a string (original) (raw)

<?php $foo = "0123456789a123456789b123456789c";// Looking for '0' from the 0th byte (from the beginning) var_dump(strrpos($foo, '0', 0));// Looking for '0' from the 1st byte (after byte "0") var_dump(strrpos($foo, '0', 1));// Looking for '7' from the 21th byte (after byte 20) var_dump(strrpos($foo, '7', 20));// Looking for '7' from the 29th byte (after byte 28) var_dump(strrpos($foo, '7', 28));// Looking for '7' right to left from the 5th byte from the end var_dump(strrpos($foo, '7', -5));// Looking for 'c' right to left from the 2nd byte from the end var_dump(strrpos($foo, 'c', -2));// Looking for '9c' right to left from the 2nd byte from the end var_dump(strrpos($foo, '9c', -2)); ?>

int(0) bool(false) int(27) bool(false) int(17) bool(false) int(29)