w3resource

PHP: strripos() function

Description

The strripos() function is used to find the position of the last occurrence of a case-insensitive string in a string.

Version:

(PHP 5)

Syntax:

strripos(main_string, search_string, start_position) 

Parameters:

Name Description Required /
Optional
Type
main_string Specifies the string to examined. Required String
search_string Specifies the string to search with. Required String
start_position Sets the starting position of the first string. Optional Integer

Return value:

Returns the numerical position of the last occurrence of seacrh_string.

Value Type: Integer.

Pictorial Presentation

string_strripos

Example:

<?php$main_string='w3resource.com';echo strripos($main_string, 'COM');?>

Output:

11

View the example in the browser

See also

PHP Function Reference

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PHP: Tips of the Day

In PHP, there are two versions of logical AND and OR operators.

Operator True if
$a and $b Both $a and $b are true
$a && $b Both $a and $b are true
$a or $b Either $a or $b is true
$a || $b Either $a or $b is true

Note that the && and || opererators have higher precedence than and and or. See table below:

Evaluation Result of $e Evaluated as
$e = false || true True $e = (false || true)
$e = false or true False ($e = false) or true

Because of this it's safer to use && and || instead of and and or.