The location of the last occurrence of a PHP lookup string in another string (case-sensitive) function Strrpos ()

Instance

Find the last occurrence of "PHP" in the string:

<?phpecho Strrpos ("I love php, I love php too!", "PHP"); >

Definition and usage

The Strrpos () function finds the position of the last occurrence of a string in another string (case-sensitive).

Note: the Strrpos () function is case-sensitive.

Related functions:

• Strpos ()-finds the position of the first occurrence of a string in another string (case-sensitive)

• Stripos ()-finds the position of the first occurrence of a string in another string (case insensitive)

• Strripos ()-Finds the last occurrence of a string in another string (case insensitive)

Grammar

Strrpos (String,find,start)

parameters	description
string	required. Specifies the string to be searched.
find	start	optional. Specify where to start the search.

technical details

return value:	Returns the position of the last occurrence of a string in another string, or FALSE if no string is found. Note: The string position starts at 0, not from 1.
PHP version:	4 +
Update log:	From PHP 5.0, the find parameter can be a string that is more than one character long. In PHP 5.0, the start parameter has been added.

Example:

<?php Echo Strrpos ("Hi friend!", "Fr"), whether the//strpos function can be considered as the position of the character in the string where the character is located;?>

Output results: 3

Example

<?phpecho Strrpos ("Hello world!", "Wo");? >

Output:
6

Verify that the link is a link to the HTTP protocol with Strrpos

<?php$url= "http://www.baidu.com"; if (Strrpos ($url, ' http://')!== 0) echo "link as a link to the HTTP protocol";? >