PHP 8 reference · String Functions

PHP strrpos() Function

Find the position of the last occurrence of a substring in a string. Returns false if it isn't found.

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Syntax

strrpos(string $haystack, string $needle, int $offset = 0): int|false

Parameter	Description
`haystack`	The string to search in.
`needle`	The string to find.
`offset` optional	Where to start; a negative value stops the search that many bytes from the end. Default: `0`

The position of the last match, or false.

Text after the last slashTry it yourself

<?php
$path = "/var/www/site/index.php";
$slash = strrpos($path, "/");
echo substr($path, $slash + 1), "\n";

Output

index.php

Last vs firstTry it yourself

<?php
echo strrpos("banana", "a"), "\n";
echo strpos("banana", "a"), "\n";

Output

5
1

Version	Change
PHP 4.0	Added

strpos() · Find the position of the first occurrence of a substring. Returns false if it's not found, so compare with === false.
strrchr() · Return the part of a string from the last occurrence of a character to the end. Only the first character of the needle is used.
PHP Strings · tutorial