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If you are new to PHP or just need to refresh your skills, this is the place to start. This series of tutorials will give you the basic knowledge you will need to create a simple PHP website.

PHP is a reflective programming language originally designed for producing dynamic web pages.[1] PHP is used mainly in server-side scripting, but can be used from a command line interface or in standalone graphical applications. Textual User Interfaces can also be created using ncurses.

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strrpos

(PHP 3, PHP 4, PHP 5)

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 4.0.0 and newer:
$pos = strrpos($mystring, "b");
if ($pos === false) { // note: three equal signs
    // not found...
}

// in versions older than 4.0.0:
$pos = strrpos($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.

Note: 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.

Note: 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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Another Useful functions:


function.strrpos | function.mb-strrpos | function.iconv-strrpos |


PHP is a widely-used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML. If you are new to PHP and want to get some idea of how it works, try the introductory tutorial. After that, check out the online manual, and the example archive sites and some of the other resources available in the links section.