w3resource

PHP: stripos() function

Description

The stripos() function is used to determine the numeric position of the first occurrence of a string inside another string.

Version:

(PHP 5)

Syntax:

 stripos(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:

The position.

Value Type: Integer.

Pictorial Presentation

php-string-stripos()

Example:

<?php
echo stripos('W3RESOURCE.COM', 'W3');
?>

Output:

0

View the example in the browser

See also

PHP Function Reference

Previous: stripcslashes
Next: strlen



PHP: Tips of the Day

Get the full URL in PHP

Have a look at $_SERVER['REQUEST_URI'], i.e.

Example:

$actual_link = "http://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";

(Note that the double quoted string syntax is perfectly correct)

If you want to support both HTTP and HTTPS, you can use

$actual_link = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on' ? "https" : "http") . "://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";

Editor's note: using this code has security implications. The client can set HTTP_HOST and REQUEST_URI to any arbitrary value it wants.

Ref : https://bit.ly/2ZYItNJ