Podręcznik PHP
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# strrpos

(PHP 3, PHP 4 )

strrpos -- Find position of last occurrence of a char in a string

## Description

int strrpos ( string haystack, string needle [, int offset])

Returns the numeric position of the last occurrence of `needle` in the `haystack` string. Note that the needle in this case can only be a single character in PHP 4. If a string is passed as the needle, then only the first character of that string will be used.

If `needle` is not found, returns `FALSE`.

It is easy to mistake the return values for "character found at position 0" and "character not found". Here's how to detect the difference:

`<?php // in PHP 4.0b3 and newer: $pos = strrpos($mystring, "b"); if ($pos === false) { // note: three equal signs // not found... } // in versions older than 4.0b3: $pos = strrpos($mystring, "b"); if (is_bool($pos) && !$pos) { // not found... } ?>`

If `needle` is not a string, it is converted to an integer and applied as the ordinal value of a character.

> Notatka: As of `PHP 5.0.0` `offset` may be specified to begin searching an arbitrary number of characters into the string. Negative values will stop searching at an arbitrary point prior to the end of the string.

> Notatka: The `needle` may be a string of more than one character as of `PHP 5.0.0`.

See also strpos(), strripos(), strrchr(), substr(), stristr(), and strstr().

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